http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/LocalCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/LocalCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/LocalCarbonFileTest.java
deleted file mode 100644
index 9d1ab42..0000000
--- 
a/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/LocalCarbonFileTest.java
+++ /dev/null
@@ -1,471 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.carbondata.core.datastorage.filesystem;
-
-import mockit.Mock;
-import mockit.MockUp;
-
-import org.apache.carbondata.core.datastorage.impl.FileFactory;
-
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import sun.nio.ch.FileChannelImpl;
-
-import java.io.*;
-import java.nio.channels.ReadableByteChannel;
-import java.util.Objects;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-
-public class LocalCarbonFileTest {
-
-    private static LocalCarbonFile localCarbonFile;
-    private static File file;
-    private static File dir;
-    private static FileOutputStream oFile;
-
-    @BeforeClass
-    static public void setUp() {
-        file = new File("Test.carbondata");
-        dir = new File("Testdir.carbondata");
-        if (!file.exists())
-            try {
-                file.createNewFile();
-                dir.mkdir();
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        try {
-            oFile = new FileOutputStream(file, true);
-
-
-            byte[] bytes = "core java api".getBytes();
-
-            oFile.write(bytes);
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
-            localCarbonFile = new LocalCarbonFile(file);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @AfterClass
-    static public void cleanUp() {
-        file.delete();
-        dir.delete();
-
-    }
-
-    @Test
-    public void 
testListFilesWithCarbonFileFilterAndWithOutOutDirectoryPermission() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-            @Override
-            public boolean accept(CarbonFile file) {
-                return false;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return false;
-            }
-
-
-        };
-        assertTrue(localCarbonFile.listFiles(carbonFileFilter) == null);
-    }
-
-    @Test
-    public void testListFilesWithOutDirPermission() {
-        localCarbonFile = new LocalCarbonFile(file);
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return false;
-            }
-        };
-        assertTrue(localCarbonFile.listFiles() == null);
-    }
-
-    @Test
-    public void testCreateNewFileForException() throws IOException {
-        localCarbonFile = new LocalCarbonFile(new File(""));
-        assertTrue(!localCarbonFile.createNewFile());
-    }
-
-    @Test
-    public void testCheckIfFileExists() throws IOException {
-        localCarbonFile = new LocalCarbonFile(new File(""));
-        assertTrue(!localCarbonFile.exists());
-    }
-
-    @Test
-    public void testRenameForce() {
-        localCarbonFile = new LocalCarbonFile(file);
-        assertTrue(localCarbonFile.renameForce("Testdb.carbon"));
-        File file1 = new File("Testdb.carbon");
-        if (file1.exists()) {
-            file1.delete();
-        }
-    }
-
-    @Test
-    public void testRenameTo() {
-        localCarbonFile = new LocalCarbonFile(file);
-        assertTrue(!localCarbonFile.renameTo("Testdb.carbon"));
-    }
-
-    @Test
-    public void testsetLastModifiedTime() {
-        localCarbonFile = new LocalCarbonFile(file);
-        assertTrue(!localCarbonFile.setLastModifiedTime(50L));
-    }
-
-    @Test
-    public void testtruncate() {
-        localCarbonFile = new LocalCarbonFile(file);
-        final int[] counter = {0};
-        new MockUp<FileFactory>() {
-            @Mock
-            public FileFactory.FileType getFileType(String path) {
-                {
-                    return FileFactory.FileType.LOCAL;
-                }
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public boolean isFileExist(String filePath, FileFactory.FileType 
fileType) throws IOException {
-                {
-                    return true;
-                }
-            }
-        };
-        new MockUp<CarbonFile>() {
-            @Mock
-            boolean delete() {
-                return true;
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public boolean createNewFile(String filePath, FileFactory.FileType 
fileType) throws IOException {
-                {
-                    return true;
-                }
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public CarbonFile getCarbonFile(String path, FileFactory.FileType 
fileType) {
-                {
-                    return new LocalCarbonFile(path);
-                }
-            }
-        };
-        new MockUp<CarbonFile>() {
-            @Mock
-            boolean delete() {
-                return true;
-            }
-        };
-
-        new MockUp<FileChannelImpl>() {
-            @Mock
-            public long transferFrom(ReadableByteChannel var1, long var2, long 
var4) throws IOException {
-                if (counter[0] == 0) {
-                    counter[0] = counter[0] + 1;
-                    return 0L;
-                } else {
-                    return 1L;
-                }
-            }
-        };
-        new MockUp<CarbonFile>() {
-            @Mock
-            boolean renameForce(String changetoName) {
-                return true;
-            }
-        };
-        localCarbonFile = new LocalCarbonFile(file);
-        assertTrue(localCarbonFile.truncate(file.getName(), 1L));
-    }
-
-    @Test
-    public void testtruncateForException() throws IOException {
-        localCarbonFile = new LocalCarbonFile(file);
-        new MockUp<FileFactory>() {
-            @Mock
-            public FileFactory.FileType getFileType(String path) {
-                {
-                    return FileFactory.FileType.LOCAL;
-                }
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public boolean isFileExist(String filePath, FileFactory.FileType 
fileType) throws IOException {
-                {
-                    return true;
-                }
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public CarbonFile getCarbonFile(String path, FileFactory.FileType 
fileType) {
-                {
-                    return new LocalCarbonFile(path);
-                }
-            }
-        };
-        new MockUp<CarbonFile>() {
-            @Mock
-            boolean delete() {
-                return true;
-            }
-        };
-        new MockUp<FileFactory>() {
-            @Mock
-            public boolean createNewFile(String filePath, FileFactory.FileType 
fileType) throws IOException {
-                {
-                    throw new IOException();
-                }
-            }
-        };
-
-
-        localCarbonFile.truncate(file.getName(), 2L);
-    }
-
-    @Test
-    public void testListFilesWithDirPermission() {
-        localCarbonFile = new LocalCarbonFile(file);
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return true;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public File[] listFiles() {
-                return null;
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-        assertTrue(localCarbonFile.listFiles().length == 0);
-    }
-
-    @Test
-    public void testListFilesWithCarbonFileFilterAndDirectoryPermission() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-            @Override
-            public boolean accept(CarbonFile file) {
-                return true;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return true;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public File[] listFiles(FileFilter filter) {
-
-                File[] file = new File[]{dir};
-                return file;
-            }
-
-
-        };
-
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertTrue(localCarbonFile.listFiles(carbonFileFilter).length == 1);
-    }
-
-    @Test
-    public void 
testListFilesForNullWithCarbonFileFilterAndDirectoryPermission() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-            @Override
-            public boolean accept(CarbonFile file) {
-                return true;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public File[] listFiles(FileFilter filter) {
-                return null;
-            }
-
-
-        };
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return false;
-            }
-
-            @Mock
-            public File[] listFiles(FileFilter filter) {
-                return null;
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertTrue(localCarbonFile.listFiles(carbonFileFilter) == null);
-    }
-
-    @Test
-    public void testListFilesForEmptyFileArrayWithCarbonFileFilter() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-            @Override
-            public boolean accept(CarbonFile file) {
-                return true;
-            }
-        };
-        new MockUp<CarbonFileFilter>() {
-            @Mock
-            boolean accept(CarbonFile file) {
-                return true;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public File[] listFiles(FileFilter filter) {
-                return null;
-            }
-        };
-        new MockUp<File>() {
-            @Mock
-            public boolean isDirectory() {
-                return true;
-            }
-
-            @Mock
-            public File[] listFiles(FileFilter filter) {
-                return null;
-            }
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertTrue(localCarbonFile.listFiles(carbonFileFilter).length == 0);
-    }
-
-    @Test
-    public void testFilesForConnicalPath() {
-
-        new MockUp<File>() {
-            @Mock
-            public String getCanonicalPath() throws IOException {
-                return "testFile";
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertTrue(Objects.equals(localCarbonFile.getCanonicalPath(), 
"testFile"));
-    }
-
-    @Test
-    public void testFilesForConnicalPathException() throws IOException {
-
-        new MockUp<File>() {
-            @Mock
-            public String getCanonicalPath() throws IOException {
-                throw new IOException();
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        localCarbonFile.getCanonicalPath();
-    }
-
-    @Test
-    public void testFilesForAbsolutePath() {
-
-        new MockUp<File>() {
-            @Mock
-            public String getAbsolutePath() {
-                return "testFile";
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertEquals(localCarbonFile.getAbsolutePath(), "testFile");
-    }
-
-    @Test
-    public void testFilesForGetPath() {
-
-        new MockUp<File>() {
-            @Mock
-            public String getPath() {
-                return "testFile";
-            }
-
-
-        };
-        localCarbonFile = new LocalCarbonFile(dir);
-
-        assertEquals(localCarbonFile.getPath(), "testFile");
-    }
-
-    @Test
-    public void testFilesForFileExists() {
-
-        localCarbonFile = new LocalCarbonFile(new File(""));
-        assertEquals(localCarbonFile.exists(), false);
-    }
-
-    @Test
-    public void testRenameForceForFileNotExists() {
-        new MockUp<File>() {
-            @Mock
-            public boolean exists() {
-                return false;
-            }
-
-            @Mock
-            public boolean renameTo(File dest) {
-                return true;
-            }
-        };
-
-        localCarbonFile = new LocalCarbonFile("demo.txt");
-
-        assertEquals(localCarbonFile.renameForce("Test.carbondata"), true);
-    }
-}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/ViewFsCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/ViewFsCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/ViewFsCarbonFileTest.java
deleted file mode 100644
index 9cdef3a..0000000
--- 
a/core/src/test/java/org/apache/carbondata/core/datastorage/filesystem/ViewFsCarbonFileTest.java
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.carbondata.core.datastorage.filesystem;
-
-import mockit.Mock;
-import mockit.MockUp;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.fs.viewfs.ViewFileSystem;
-import org.apache.hadoop.hdfs.DistributedFileSystem;
-import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
-
-public class ViewFsCarbonFileTest {
-
-    private static ViewFSCarbonFile viewFSCarbonFile;
-    private static FileStatus fileStatus;
-    private static FileStatus fileStatusWithOutDirectoryPermission;
-    private static String fileName;
-    private static File file;
-
-
-    @BeforeClass
-    static public void setUp() {
-        file = new File("Test.carbondata");
-        if (!file.exists())
-            try {
-                file.createNewFile();
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        try {
-            FileOutputStream oFile = new FileOutputStream(file, true);
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
-        }
-
-        fileStatus = new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
-        fileStatusWithOutDirectoryPermission = new FileStatus(12L, false, 60, 
120l, 180L, new Path(file.getAbsolutePath()));
-        fileName = file.getAbsolutePath();
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-    }
-
-    @AfterClass
-    static public void cleanUp() {
-        file.delete();
-    }
-
-    @Test
-    public void testRenameForceForException() throws IOException {
-
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                throw new IOException();
-            }
-
-        };
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        viewFSCarbonFile.renameForce(fileName);
-    }
-
-    @Test
-    public void testListFilesWithOutDirectoryPermission() {
-        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
-        assertTrue(viewFSCarbonFile.listFiles() == null);
-    }
-
-    @Test
-    public void testConstructorWithFilePath() {
-        viewFSCarbonFile = new ViewFSCarbonFile(file.getAbsolutePath());
-        assertTrue(viewFSCarbonFile instanceof ViewFSCarbonFile);
-    }
-
-    @Test
-    public void testListFilesForNullListStatus() {
-        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new ViewFileSystem();
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public FileStatus[] listStatus(Path var1) throws IOException {
-
-                return null;
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public boolean delete(Path var1, boolean var2) throws IOException {
-
-                return true;
-            }
-
-        };
-        //public boolean delete(Path var1, boolean var2) throws IOException;
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        assertTrue(viewFSCarbonFile.listFiles().length == 0);
-    }
-
-    @Test
-    public void testListDirectory() {
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new ViewFileSystem();
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public FileStatus[] listStatus(Path var1) throws IOException {
-
-                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
-                return fileStatus;
-            }
-
-        };
-
-        assertTrue(viewFSCarbonFile.listFiles().length == 1);
-    }
-
-    @Test
-    public void testListFilesForException() throws IOException {
-        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
-
-        new MockUp<FileStatus>() {
-            @Mock
-            public Path getPath() {
-                return new Path(file.getAbsolutePath());
-            }
-
-        };
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                throw new IOException();
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public FileStatus[] listStatus(Path var1) throws IOException {
-
-                throw new IOException();
-            }
-
-        };
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        viewFSCarbonFile.listFiles();
-    }
-
-    @Test
-    public void testListFilesWithCarbonFilter() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-
-            @Override
-            public boolean accept(CarbonFile file) {
-                return true;
-            }
-        };
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        assertTrue(viewFSCarbonFile.listFiles(carbonFileFilter).length == 1);
-    }
-
-    @Test
-    public void testlistFilesWithoutFilter() {
-        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
-
-            @Override
-            public boolean accept(CarbonFile file) {
-                return false;
-            }
-        };
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new ViewFileSystem();
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public FileStatus[] listStatus(Path var1) throws IOException {
-
-                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
-                return fileStatus;
-            }
-
-        };
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        assertTrue(viewFSCarbonFile.listFiles(carbonFileFilter).length == 0);
-    }
-
-    @Test
-    public void testGetParentFIle() {
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new DistributedFileSystem();
-            }
-
-        };
-        new MockUp<Path>() {
-            @Mock
-            public Path getParent() {
-                return new Path(file.getAbsolutePath()
-                );
-            }
-
-        };
-        new MockUp<FileStatus>() {
-            @Mock
-            public Path getPath() {
-                return new Path(file.getAbsolutePath());
-            }
-
-        };
-        new MockUp<DistributedFileSystem>() {
-            @Mock
-            public FileStatus getFileStatus(Path f) throws IOException {
-
-                return new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
-            }
-
-        };
-
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        assertFalse(viewFSCarbonFile.getParentFile().equals(null));
-    }
-
-    @Test
-    public void testForNonDisributedSystem() {
-        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new WebHdfsFileSystem();
-            }
-
-        };
-        assertFalse(viewFSCarbonFile.renameForce(fileName));
-    }
-
-    @Test
-    public void testrenameForceForViewFileSystem() {
-        new MockUp<Path>() {
-            @Mock
-            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
-                return new ViewFileSystem();
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public boolean delete(Path f, boolean recursive) throws
-                    IOException {
-                return true;
-
-            }
-
-        };
-        new MockUp<ViewFileSystem>() {
-            @Mock
-            public boolean rename(Path src, Path dst) throws IOException {
-                return true;
-
-            }
-
-        };
-
-        assertTrue(viewFSCarbonFile.renameForce(fileName));
-
-    }
-}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/chunk/reader/measure/CompressedMeasureChunkFileBasedReaderTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/chunk/reader/measure/CompressedMeasureChunkFileBasedReaderTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/chunk/reader/measure/CompressedMeasureChunkFileBasedReaderTest.java
index 29fe16d..e723ac7 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/datastore/chunk/reader/measure/CompressedMeasureChunkFileBasedReaderTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/chunk/reader/measure/CompressedMeasureChunkFileBasedReaderTest.java
@@ -5,11 +5,11 @@ import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.apache.carbondata.core.datastorage.FileHolder;
-import org.apache.carbondata.core.datastorage.compression.MeasureMetaDataModel;
-import org.apache.carbondata.core.datastorage.compression.WriterCompressModel;
-import org.apache.carbondata.core.datastorage.dataholder.CarbonWriteDataHolder;
-import org.apache.carbondata.core.datastorage.impl.data.compressed
+import org.apache.carbondata.core.datastore.FileHolder;
+import org.apache.carbondata.core.datastore.compression.MeasureMetaDataModel;
+import org.apache.carbondata.core.datastore.compression.WriterCompressModel;
+import org.apache.carbondata.core.datastore.dataholder.CarbonWriteDataHolder;
+import org.apache.carbondata.core.datastore.impl.data.compressed
     .HeavyCompressedDoubleArrayDataInMemoryStore;
 import org.apache.carbondata.core.datastore.chunk.MeasureColumnDataChunk;
 import org.apache.carbondata.core.datastore.chunk.reader.measure

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/columnar/ColumnarKeyStoreDataHolderUnitTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/columnar/ColumnarKeyStoreDataHolderUnitTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/columnar/ColumnarKeyStoreDataHolderUnitTest.java
new file mode 100644
index 0000000..132b3a9
--- /dev/null
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/columnar/ColumnarKeyStoreDataHolderUnitTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.carbondata.core.datastore.columnar;
+
+import java.util.List;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class ColumnarKeyStoreDataHolderUnitTest {
+
+  private static ColumnarKeyStoreDataHolder columnarKeyStoreDataHolder;
+  private static ColumnarKeyStoreMetadata columnarKeyStoreMetadata;
+
+  @BeforeClass public static void setup() {
+    byte[] keyBlockData = new byte[] { 16, 8, 32, 40, 8, 8, 8 };
+    int eachRowSize = 2;
+    int[] reverseIndex = new int[] { 1, 5, 6, 3, 8 };
+    columnarKeyStoreMetadata = new ColumnarKeyStoreMetadata(eachRowSize);
+    columnarKeyStoreMetadata.setColumnReverseIndex(reverseIndex);
+    columnarKeyStoreDataHolder =
+        new ColumnarKeyStoreDataHolder(keyBlockData, columnarKeyStoreMetadata);
+  }
+
+  @Test public void testGetSurrogateKeyWithNullINGetColumnReverseIndex() {
+    byte[] keyBlockData = new byte[] { 16, 8, 32, 40, 8, 8, 8 };
+    int eachRowSize = 1;
+    ColumnarKeyStoreMetadata columnarKeyStoreMetadata = new 
ColumnarKeyStoreMetadata(eachRowSize);
+    ColumnarKeyStoreDataHolder columnarKeyStoreDataHolderNew =
+        new ColumnarKeyStoreDataHolder(keyBlockData, columnarKeyStoreMetadata);
+    int columnIndex = 5;
+    int expected_result = 8;
+    int result = columnarKeyStoreDataHolderNew.getSurrogateKey(columnIndex);
+    assertEquals(expected_result, result);
+  }
+
+  @Test public void 
testGetSurrogateKeyWithNullINGetColumnReverseIndexAndRowSizeTwo() {
+    byte[] keyBlockData = new byte[] { 16, 8, 32, 40, 8, 8, 8 };
+    int eachRowSize = 2;
+    ColumnarKeyStoreMetadata columnarKeyStoreMetadata = new 
ColumnarKeyStoreMetadata(eachRowSize);
+    ColumnarKeyStoreDataHolder columnarKeyStoreDataHolderNew =
+        new ColumnarKeyStoreDataHolder(keyBlockData, columnarKeyStoreMetadata);
+    int columnIndex = 0;
+    int expected_result = 4104;
+    int result = columnarKeyStoreDataHolderNew.getSurrogateKey(columnIndex);
+    assertEquals(expected_result, result);
+  }
+
+  @Test public void testGetSurrogateKeyWithNotNullINGetColumnReverseIndex() {
+    int columnIndex = 0;
+    int expected_result = 8232;
+    int result = columnarKeyStoreDataHolder.getSurrogateKey(columnIndex);
+    assertEquals(expected_result, result);
+  }
+
+  @Test(expected = ArrayIndexOutOfBoundsException.class)
+  public void testExceptionInGetSurrogateKey() {
+    int columnIndex = 10;
+    int expected_result = 8232;
+    int result = columnarKeyStoreDataHolder.getSurrogateKey(columnIndex);
+    assertEquals(expected_result, result);
+  }
+
+  @Test public void testGetSurrogateKeyWithListOfByteWhileCreatingObject() {
+    byte[] keyBlockData = new byte[] { 32, 64, 32, 40, 64, 8, 8 };
+    List<byte[]> noDictionaryValBasedKeyBlockData = new 
java.util.ArrayList<>();
+    noDictionaryValBasedKeyBlockData.add(keyBlockData);
+    new ColumnarKeyStoreDataHolder(columnarKeyStoreMetadata);
+    int columnIndex = 0;
+    int expected_result = 8232;
+    int result = columnarKeyStoreDataHolder.getSurrogateKey(columnIndex);
+    assertEquals(expected_result, result);
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/AlluxioCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/AlluxioCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/AlluxioCarbonFileTest.java
new file mode 100644
index 0000000..aada6f8
--- /dev/null
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/AlluxioCarbonFileTest.java
@@ -0,0 +1,292 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.carbondata.core.datastore.filesystem;
+
+import mockit.Mock;
+import mockit.MockUp;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Options;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hdfs.DistributedFileSystem;
+import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class AlluxioCarbonFileTest {
+
+    private static AlluxioCarbonFile alluxioCarbonFile;
+    private static FileStatus fileStatus;
+    private static FileStatus fileStatusWithOutDirectoryPermission;
+    private static String fileName;
+    private static File file;
+
+
+    @BeforeClass
+    static public void setUp() {
+        file = new File("Test.carbondata");
+        if (!file.exists())
+            try {
+                file.createNewFile();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        try {
+            FileOutputStream oFile = new FileOutputStream(file, true);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        fileStatus = new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
+        fileStatusWithOutDirectoryPermission = new FileStatus(12L, false, 60, 
120l, 180L, new Path(file.getAbsolutePath()));
+        fileName = file.getAbsolutePath();
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+    }
+
+    @AfterClass
+    static public void cleanUp() {
+        file.delete();
+    }
+
+    @Test
+    public void testRenameForceForException() throws IOException {
+
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        alluxioCarbonFile.renameForce(fileName);
+    }
+
+    @Test
+    public void testListFilesWithOutDirectoryPermission() {
+        alluxioCarbonFile = new 
AlluxioCarbonFile(fileStatusWithOutDirectoryPermission);
+        assertTrue(alluxioCarbonFile.listFiles() == null);
+    }
+
+    @Test
+    public void testConstructorWithFilePath() {
+        alluxioCarbonFile = new AlluxioCarbonFile(file.getAbsolutePath());
+        assertTrue(alluxioCarbonFile instanceof AlluxioCarbonFile);
+    }
+
+    @Test
+    public void testListFilesForNullListStatus() {
+        alluxioCarbonFile = new 
AlluxioCarbonFile(fileStatusWithOutDirectoryPermission);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                return null;
+            }
+
+        };
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        assertTrue(alluxioCarbonFile.listFiles().length == 0);
+    }
+
+    @Test
+    public void testListDirectory() {
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+
+        assertTrue(alluxioCarbonFile.listFiles().length == 1);
+    }
+
+    @Test
+    public void testListFilesForException() throws IOException {
+        alluxioCarbonFile = new 
AlluxioCarbonFile(fileStatusWithOutDirectoryPermission);
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(file.getAbsolutePath());
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                throw new IOException();
+            }
+
+        };
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        alluxioCarbonFile.listFiles();
+    }
+
+    @Test
+    public void testListFilesWithCarbonFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        assertTrue(alluxioCarbonFile.listFiles(carbonFileFilter).length == 1);
+    }
+
+    @Test
+    public void testlistFilesWithoutFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return false;
+            }
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        assertTrue(alluxioCarbonFile.listFiles(carbonFileFilter).length == 0);
+    }
+
+    @Test
+    public void testGetParentFile() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public Path getParent() {
+                return new Path(file.getAbsolutePath()
+                );
+            }
+
+        };
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(file.getAbsolutePath());
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus getFileStatus(Path path) throws IOException {
+
+                return new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
+            }
+
+        };
+
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        assertFalse(alluxioCarbonFile.getParentFile().equals(null));
+    }
+
+    @Test
+    public void testForNonDisributedSystem() {
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new WebHdfsFileSystem();
+            }
+
+        };
+        assertFalse(alluxioCarbonFile.renameForce(fileName));
+    }
+
+    @Test
+    public void testrenameForceForDisributedSystem() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public void rename(Path src, Path dst, final Options.Rename... 
options) throws IOException {
+
+            }
+
+        };
+
+        alluxioCarbonFile = new AlluxioCarbonFile(fileStatus);
+        assertTrue(alluxioCarbonFile.renameForce(fileName));
+
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/HDFSCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/HDFSCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/HDFSCarbonFileTest.java
new file mode 100644
index 0000000..a85280a
--- /dev/null
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/HDFSCarbonFileTest.java
@@ -0,0 +1,400 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.carbondata.core.datastore.filesystem;
+
+import mockit.Mock;
+import mockit.MockUp;
+import org.apache.carbondata.common.logging.LogService;
+import org.apache.carbondata.common.logging.LogServiceFactory;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Options;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hdfs.DistributedFileSystem;
+import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
+import org.apache.hadoop.util.Progressable;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+
+public class HDFSCarbonFileTest {
+
+    private static final LogService LOGGER =
+            LogServiceFactory.getLogService(HDFSCarbonFile.class.getName());
+    private static HDFSCarbonFile hdfsCarbonFile;
+    private static FileStatus fileStatus = null;
+    private static FileStatus fileStatusWithOutDirectoryPermission;
+    private static String fileName = null;
+    private static FileSystem fs = null;
+    private static Path pt;
+
+    @BeforeClass
+    static public void setUp() throws IOException {
+        Configuration config = new Configuration();
+//adding local hadoop configuration
+        config.addResource(new Path("core-site.xml"));
+        config.addResource(new Path("hdfs-site.xml"));
+        fileName = "Test.carbondata"; //this path is HDFS path
+        pt = new Path(fileName);
+        fs = FileSystem.get(new Configuration(config));
+        fs.create(pt);
+        if (fs.exists(pt)) {
+            OutputStream os = fs.create(pt,
+                    new Progressable() {
+                        public void progress() {
+                            LOGGER.info("Started Writing to File===");
+                        }
+                    });
+            BufferedWriter br = new BufferedWriter(new OutputStreamWriter(os, 
"UTF-8"));
+            br.write("Hello World");
+            br.close();
+            fs.close();
+
+            fileStatus = new FileStatus(12L, true, 60, 120l, 180L, new 
Path(fileName));
+            fileStatusWithOutDirectoryPermission = new FileStatus(12L, false, 
60, 120l, 180L, new Path(fileName));
+            hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+
+        }
+    }
+
+    @AfterClass
+    static public void cleanUp() {
+        try {
+            fs.delete(pt, true);
+        } catch (IOException e) {
+            LOGGER.error("Exception Occured" + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testRenameForceForException() throws IOException {
+
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        hdfsCarbonFile.renameForce(fileName);
+    }
+
+    @Test
+    public void testListFilesWithOutDirectoryPermission() {
+        hdfsCarbonFile = new 
HDFSCarbonFile(fileStatusWithOutDirectoryPermission);
+        new MockUp<FileStatus>() {
+            @Mock
+            public boolean isDirectory() {
+                return false;
+            }
+
+        };
+
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        assertEquals(hdfsCarbonFile.listFiles(), null);
+    }
+
+    @Test
+    public void testConstructorWithFilePath() {
+        hdfsCarbonFile = new HDFSCarbonFile(fileName);
+        assertTrue(hdfsCarbonFile instanceof HDFSCarbonFile);
+    }
+
+    @Test
+    public void testListFilesForNullListStatus() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                return null;
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertEquals(hdfsCarbonFile.listFiles().length, 0);
+    }
+
+    @Test
+    public void testListDirectory() {
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+
+        assertEquals(hdfsCarbonFile.listFiles().length, 1);
+    }
+
+    @Test
+    public void testListFilesForException() throws IOException {
+        new HDFSCarbonFile(fileStatusWithOutDirectoryPermission);
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                throw new IOException();
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        hdfsCarbonFile.listFiles();
+    }
+
+    @Test
+    public void testListFilesWithCarbonFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        new MockUp<FileStatus>() {
+            @Mock
+            public boolean isDirectory() {
+                return true;
+            }
+
+        };
+
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus fileStatus[] = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertEquals(hdfsCarbonFile.listFiles(carbonFileFilter).length, 1);
+    }
+
+    @Test
+    public void testlistFilesWithoutFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return false;
+            }
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertEquals(hdfsCarbonFile.listFiles(carbonFileFilter).length, 0);
+    }
+
+    @Test
+    public void testGetParentFileForNull() {
+
+        new MockUp<Path>() {
+            @Mock
+            public Path getParent() {
+                return null;
+            }
+
+        };
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertEquals(hdfsCarbonFile.getParentFile(), null);
+    }
+
+    @Test
+    public void testGetParentFile() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public Path getParent() {
+                return new Path(fileName);
+            }
+
+        };
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(fileName);
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus getFileStatus(Path file) throws IOException {
+
+                return new FileStatus(12L, true, 60, 120l, 180L, new 
Path(fileName));
+            }
+
+        };
+
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertTrue(hdfsCarbonFile.getParentFile() instanceof CarbonFile);
+    }
+
+    @Test
+    public void testForNonDisributedSystem() {
+        new HDFSCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new WebHdfsFileSystem();
+            }
+
+        };
+        assertEquals(hdfsCarbonFile.renameForce(fileName), false);
+    }
+
+    @Test
+    public void testrenameForceForDisributedSystem() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public void rename(Path src, Path dst, final Options.Rename... 
options) throws IOException {
+
+            }
+
+        };
+        hdfsCarbonFile = new HDFSCarbonFile(fileStatus);
+        assertEquals(hdfsCarbonFile.renameForce(fileName), true);
+
+    }
+}
+

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/LocalCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/LocalCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/LocalCarbonFileTest.java
new file mode 100644
index 0000000..4e2c650
--- /dev/null
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/LocalCarbonFileTest.java
@@ -0,0 +1,471 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.carbondata.core.datastore.filesystem;
+
+import mockit.Mock;
+import mockit.MockUp;
+
+import org.apache.carbondata.core.datastore.impl.FileFactory;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import sun.nio.ch.FileChannelImpl;
+
+import java.io.*;
+import java.nio.channels.ReadableByteChannel;
+import java.util.Objects;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+
+public class LocalCarbonFileTest {
+
+    private static LocalCarbonFile localCarbonFile;
+    private static File file;
+    private static File dir;
+    private static FileOutputStream oFile;
+
+    @BeforeClass
+    static public void setUp() {
+        file = new File("Test.carbondata");
+        dir = new File("Testdir.carbondata");
+        if (!file.exists())
+            try {
+                file.createNewFile();
+                dir.mkdir();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        try {
+            oFile = new FileOutputStream(file, true);
+
+
+            byte[] bytes = "core java api".getBytes();
+
+            oFile.write(bytes);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+            localCarbonFile = new LocalCarbonFile(file);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @AfterClass
+    static public void cleanUp() {
+        file.delete();
+        dir.delete();
+
+    }
+
+    @Test
+    public void 
testListFilesWithCarbonFileFilterAndWithOutOutDirectoryPermission() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+            @Override
+            public boolean accept(CarbonFile file) {
+                return false;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return false;
+            }
+
+
+        };
+        assertTrue(localCarbonFile.listFiles(carbonFileFilter) == null);
+    }
+
+    @Test
+    public void testListFilesWithOutDirPermission() {
+        localCarbonFile = new LocalCarbonFile(file);
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return false;
+            }
+        };
+        assertTrue(localCarbonFile.listFiles() == null);
+    }
+
+    @Test
+    public void testCreateNewFileForException() throws IOException {
+        localCarbonFile = new LocalCarbonFile(new File(""));
+        assertTrue(!localCarbonFile.createNewFile());
+    }
+
+    @Test
+    public void testCheckIfFileExists() throws IOException {
+        localCarbonFile = new LocalCarbonFile(new File(""));
+        assertTrue(!localCarbonFile.exists());
+    }
+
+    @Test
+    public void testRenameForce() {
+        localCarbonFile = new LocalCarbonFile(file);
+        assertTrue(localCarbonFile.renameForce("Testdb.carbon"));
+        File file1 = new File("Testdb.carbon");
+        if (file1.exists()) {
+            file1.delete();
+        }
+    }
+
+    @Test
+    public void testRenameTo() {
+        localCarbonFile = new LocalCarbonFile(file);
+        assertTrue(!localCarbonFile.renameTo("Testdb.carbon"));
+    }
+
+    @Test
+    public void testsetLastModifiedTime() {
+        localCarbonFile = new LocalCarbonFile(file);
+        assertTrue(!localCarbonFile.setLastModifiedTime(50L));
+    }
+
+    @Test
+    public void testtruncate() {
+        localCarbonFile = new LocalCarbonFile(file);
+        final int[] counter = {0};
+        new MockUp<FileFactory>() {
+            @Mock
+            public FileFactory.FileType getFileType(String path) {
+                {
+                    return FileFactory.FileType.LOCAL;
+                }
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public boolean isFileExist(String filePath, FileFactory.FileType 
fileType) throws IOException {
+                {
+                    return true;
+                }
+            }
+        };
+        new MockUp<CarbonFile>() {
+            @Mock
+            boolean delete() {
+                return true;
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public boolean createNewFile(String filePath, FileFactory.FileType 
fileType) throws IOException {
+                {
+                    return true;
+                }
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public CarbonFile getCarbonFile(String path, FileFactory.FileType 
fileType) {
+                {
+                    return new LocalCarbonFile(path);
+                }
+            }
+        };
+        new MockUp<CarbonFile>() {
+            @Mock
+            boolean delete() {
+                return true;
+            }
+        };
+
+        new MockUp<FileChannelImpl>() {
+            @Mock
+            public long transferFrom(ReadableByteChannel var1, long var2, long 
var4) throws IOException {
+                if (counter[0] == 0) {
+                    counter[0] = counter[0] + 1;
+                    return 0L;
+                } else {
+                    return 1L;
+                }
+            }
+        };
+        new MockUp<CarbonFile>() {
+            @Mock
+            boolean renameForce(String changetoName) {
+                return true;
+            }
+        };
+        localCarbonFile = new LocalCarbonFile(file);
+        assertTrue(localCarbonFile.truncate(file.getName(), 1L));
+    }
+
+    @Test
+    public void testtruncateForException() throws IOException {
+        localCarbonFile = new LocalCarbonFile(file);
+        new MockUp<FileFactory>() {
+            @Mock
+            public FileFactory.FileType getFileType(String path) {
+                {
+                    return FileFactory.FileType.LOCAL;
+                }
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public boolean isFileExist(String filePath, FileFactory.FileType 
fileType) throws IOException {
+                {
+                    return true;
+                }
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public CarbonFile getCarbonFile(String path, FileFactory.FileType 
fileType) {
+                {
+                    return new LocalCarbonFile(path);
+                }
+            }
+        };
+        new MockUp<CarbonFile>() {
+            @Mock
+            boolean delete() {
+                return true;
+            }
+        };
+        new MockUp<FileFactory>() {
+            @Mock
+            public boolean createNewFile(String filePath, FileFactory.FileType 
fileType) throws IOException {
+                {
+                    throw new IOException();
+                }
+            }
+        };
+
+
+        localCarbonFile.truncate(file.getName(), 2L);
+    }
+
+    @Test
+    public void testListFilesWithDirPermission() {
+        localCarbonFile = new LocalCarbonFile(file);
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return true;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public File[] listFiles() {
+                return null;
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+        assertTrue(localCarbonFile.listFiles().length == 0);
+    }
+
+    @Test
+    public void testListFilesWithCarbonFileFilterAndDirectoryPermission() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return true;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public File[] listFiles(FileFilter filter) {
+
+                File[] file = new File[]{dir};
+                return file;
+            }
+
+
+        };
+
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertTrue(localCarbonFile.listFiles(carbonFileFilter).length == 1);
+    }
+
+    @Test
+    public void 
testListFilesForNullWithCarbonFileFilterAndDirectoryPermission() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public File[] listFiles(FileFilter filter) {
+                return null;
+            }
+
+
+        };
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return false;
+            }
+
+            @Mock
+            public File[] listFiles(FileFilter filter) {
+                return null;
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertTrue(localCarbonFile.listFiles(carbonFileFilter) == null);
+    }
+
+    @Test
+    public void testListFilesForEmptyFileArrayWithCarbonFileFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        new MockUp<CarbonFileFilter>() {
+            @Mock
+            boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public File[] listFiles(FileFilter filter) {
+                return null;
+            }
+        };
+        new MockUp<File>() {
+            @Mock
+            public boolean isDirectory() {
+                return true;
+            }
+
+            @Mock
+            public File[] listFiles(FileFilter filter) {
+                return null;
+            }
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertTrue(localCarbonFile.listFiles(carbonFileFilter).length == 0);
+    }
+
+    @Test
+    public void testFilesForConnicalPath() {
+
+        new MockUp<File>() {
+            @Mock
+            public String getCanonicalPath() throws IOException {
+                return "testFile";
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertTrue(Objects.equals(localCarbonFile.getCanonicalPath(), 
"testFile"));
+    }
+
+    @Test
+    public void testFilesForConnicalPathException() throws IOException {
+
+        new MockUp<File>() {
+            @Mock
+            public String getCanonicalPath() throws IOException {
+                throw new IOException();
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        localCarbonFile.getCanonicalPath();
+    }
+
+    @Test
+    public void testFilesForAbsolutePath() {
+
+        new MockUp<File>() {
+            @Mock
+            public String getAbsolutePath() {
+                return "testFile";
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertEquals(localCarbonFile.getAbsolutePath(), "testFile");
+    }
+
+    @Test
+    public void testFilesForGetPath() {
+
+        new MockUp<File>() {
+            @Mock
+            public String getPath() {
+                return "testFile";
+            }
+
+
+        };
+        localCarbonFile = new LocalCarbonFile(dir);
+
+        assertEquals(localCarbonFile.getPath(), "testFile");
+    }
+
+    @Test
+    public void testFilesForFileExists() {
+
+        localCarbonFile = new LocalCarbonFile(new File(""));
+        assertEquals(localCarbonFile.exists(), false);
+    }
+
+    @Test
+    public void testRenameForceForFileNotExists() {
+        new MockUp<File>() {
+            @Mock
+            public boolean exists() {
+                return false;
+            }
+
+            @Mock
+            public boolean renameTo(File dest) {
+                return true;
+            }
+        };
+
+        localCarbonFile = new LocalCarbonFile("demo.txt");
+
+        assertEquals(localCarbonFile.renameForce("Test.carbondata"), true);
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/ViewFsCarbonFileTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/ViewFsCarbonFileTest.java
 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/ViewFsCarbonFileTest.java
new file mode 100644
index 0000000..7569dc6
--- /dev/null
+++ 
b/core/src/test/java/org/apache/carbondata/core/datastore/filesystem/ViewFsCarbonFileTest.java
@@ -0,0 +1,311 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.carbondata.core.datastore.filesystem;
+
+import mockit.Mock;
+import mockit.MockUp;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.viewfs.ViewFileSystem;
+import org.apache.hadoop.hdfs.DistributedFileSystem;
+import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+
+public class ViewFsCarbonFileTest {
+
+    private static ViewFSCarbonFile viewFSCarbonFile;
+    private static FileStatus fileStatus;
+    private static FileStatus fileStatusWithOutDirectoryPermission;
+    private static String fileName;
+    private static File file;
+
+
+    @BeforeClass
+    static public void setUp() {
+        file = new File("Test.carbondata");
+        if (!file.exists())
+            try {
+                file.createNewFile();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        try {
+            FileOutputStream oFile = new FileOutputStream(file, true);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+
+        fileStatus = new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
+        fileStatusWithOutDirectoryPermission = new FileStatus(12L, false, 60, 
120l, 180L, new Path(file.getAbsolutePath()));
+        fileName = file.getAbsolutePath();
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+    }
+
+    @AfterClass
+    static public void cleanUp() {
+        file.delete();
+    }
+
+    @Test
+    public void testRenameForceForException() throws IOException {
+
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        viewFSCarbonFile.renameForce(fileName);
+    }
+
+    @Test
+    public void testListFilesWithOutDirectoryPermission() {
+        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
+        assertTrue(viewFSCarbonFile.listFiles() == null);
+    }
+
+    @Test
+    public void testConstructorWithFilePath() {
+        viewFSCarbonFile = new ViewFSCarbonFile(file.getAbsolutePath());
+        assertTrue(viewFSCarbonFile instanceof ViewFSCarbonFile);
+    }
+
+    @Test
+    public void testListFilesForNullListStatus() {
+        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new ViewFileSystem();
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                return null;
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public boolean delete(Path var1, boolean var2) throws IOException {
+
+                return true;
+            }
+
+        };
+        //public boolean delete(Path var1, boolean var2) throws IOException;
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        assertTrue(viewFSCarbonFile.listFiles().length == 0);
+    }
+
+    @Test
+    public void testListDirectory() {
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new ViewFileSystem();
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+
+        assertTrue(viewFSCarbonFile.listFiles().length == 1);
+    }
+
+    @Test
+    public void testListFilesForException() throws IOException {
+        viewFSCarbonFile = new 
ViewFSCarbonFile(fileStatusWithOutDirectoryPermission);
+
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(file.getAbsolutePath());
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                throw new IOException();
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                throw new IOException();
+            }
+
+        };
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        viewFSCarbonFile.listFiles();
+    }
+
+    @Test
+    public void testListFilesWithCarbonFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return true;
+            }
+        };
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        assertTrue(viewFSCarbonFile.listFiles(carbonFileFilter).length == 1);
+    }
+
+    @Test
+    public void testlistFilesWithoutFilter() {
+        CarbonFileFilter carbonFileFilter = new CarbonFileFilter() {
+
+            @Override
+            public boolean accept(CarbonFile file) {
+                return false;
+            }
+        };
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new ViewFileSystem();
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public FileStatus[] listStatus(Path var1) throws IOException {
+
+                FileStatus[] fileStatus = new FileStatus[]{new FileStatus(12L, 
true, 60, 120l, 180L, new Path(fileName))};
+                return fileStatus;
+            }
+
+        };
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        assertTrue(viewFSCarbonFile.listFiles(carbonFileFilter).length == 0);
+    }
+
+    @Test
+    public void testGetParentFIle() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new DistributedFileSystem();
+            }
+
+        };
+        new MockUp<Path>() {
+            @Mock
+            public Path getParent() {
+                return new Path(file.getAbsolutePath()
+                );
+            }
+
+        };
+        new MockUp<FileStatus>() {
+            @Mock
+            public Path getPath() {
+                return new Path(file.getAbsolutePath());
+            }
+
+        };
+        new MockUp<DistributedFileSystem>() {
+            @Mock
+            public FileStatus getFileStatus(Path f) throws IOException {
+
+                return new FileStatus(12L, true, 60, 120l, 180L, new 
Path(file.getAbsolutePath()));
+            }
+
+        };
+
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        assertFalse(viewFSCarbonFile.getParentFile().equals(null));
+    }
+
+    @Test
+    public void testForNonDisributedSystem() {
+        viewFSCarbonFile = new ViewFSCarbonFile(fileStatus);
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new WebHdfsFileSystem();
+            }
+
+        };
+        assertFalse(viewFSCarbonFile.renameForce(fileName));
+    }
+
+    @Test
+    public void testrenameForceForViewFileSystem() {
+        new MockUp<Path>() {
+            @Mock
+            public FileSystem getFileSystem(Configuration conf) throws 
IOException {
+                return new ViewFileSystem();
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public boolean delete(Path f, boolean recursive) throws
+                    IOException {
+                return true;
+
+            }
+
+        };
+        new MockUp<ViewFileSystem>() {
+            @Mock
+            public boolean rename(Path src, Path dst) throws IOException {
+                return true;
+
+            }
+
+        };
+
+        assertTrue(viewFSCarbonFile.renameForce(fileName));
+
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/reader/sortindex/CarbonDictionarySortIndexReaderImplTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/reader/sortindex/CarbonDictionarySortIndexReaderImplTest.java
 
b/core/src/test/java/org/apache/carbondata/core/reader/sortindex/CarbonDictionarySortIndexReaderImplTest.java
index e0708dc..585f33b 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/reader/sortindex/CarbonDictionarySortIndexReaderImplTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/reader/sortindex/CarbonDictionarySortIndexReaderImplTest.java
@@ -26,8 +26,8 @@ import java.util.UUID;
 
 import org.apache.carbondata.core.metadata.CarbonTableIdentifier;
 import org.apache.carbondata.core.metadata.ColumnIdentifier;
-import org.apache.carbondata.core.datastorage.filesystem.CarbonFile;
-import org.apache.carbondata.core.datastorage.impl.FileFactory;
+import org.apache.carbondata.core.datastore.filesystem.CarbonFile;
+import org.apache.carbondata.core.datastore.impl.FileFactory;
 import org.apache.carbondata.core.util.CarbonUtil;
 import org.apache.carbondata.core.writer.CarbonDictionaryWriter;
 import org.apache.carbondata.core.writer.CarbonDictionaryWriterImpl;

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/util/CarbonMetadataUtilTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/util/CarbonMetadataUtilTest.java
 
b/core/src/test/java/org/apache/carbondata/core/util/CarbonMetadataUtilTest.java
index 5855262..7e9e18d 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/util/CarbonMetadataUtilTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/util/CarbonMetadataUtilTest.java
@@ -24,7 +24,7 @@ import mockit.MockUp;
 
 import org.apache.carbondata.core.datastore.block.SegmentProperties;
 import org.apache.carbondata.core.metadata.index.BlockIndexInfo;
-import org.apache.carbondata.core.datastorage.compression.WriterCompressModel;
+import org.apache.carbondata.core.datastore.compression.WriterCompressModel;
 import org.apache.carbondata.core.metadata.BlockletInfoColumnar;
 import org.apache.carbondata.core.metadata.ValueEncoderMeta;
 import org.apache.carbondata.format.*;

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/util/CarbonUtilTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/util/CarbonUtilTest.java 
b/core/src/test/java/org/apache/carbondata/core/util/CarbonUtilTest.java
index 37f1ef6..c928d36 100644
--- a/core/src/test/java/org/apache/carbondata/core/util/CarbonUtilTest.java
+++ b/core/src/test/java/org/apache/carbondata/core/util/CarbonUtilTest.java
@@ -31,10 +31,10 @@ import org.apache.carbondata.core.metadata.Encoding;
 import org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;
 import org.apache.carbondata.core.metadata.schema.table.column.CarbonMeasure;
 import org.apache.carbondata.core.metadata.schema.table.column.ColumnSchema;
-import org.apache.carbondata.core.datastorage.columnar.ColumnGroupModel;
-import org.apache.carbondata.core.datastorage.compression.WriterCompressModel;
-import org.apache.carbondata.core.datastorage.filesystem.LocalCarbonFile;
-import org.apache.carbondata.core.datastorage.impl.FileFactory;
+import org.apache.carbondata.core.datastore.columnar.ColumnGroupModel;
+import org.apache.carbondata.core.datastore.compression.WriterCompressModel;
+import org.apache.carbondata.core.datastore.filesystem.LocalCarbonFile;
+import org.apache.carbondata.core.datastore.impl.FileFactory;
 import org.apache.carbondata.core.metadata.ValueEncoderMeta;
 import org.apache.carbondata.core.scan.model.QueryDimension;
 

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/util/DataFileFooterConverterTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/util/DataFileFooterConverterTest.java
 
b/core/src/test/java/org/apache/carbondata/core/util/DataFileFooterConverterTest.java
index f1b8070..9b90755 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/util/DataFileFooterConverterTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/util/DataFileFooterConverterTest.java
@@ -26,9 +26,9 @@ import 
org.apache.carbondata.core.metadata.ColumnarFormatVersion;
 import org.apache.carbondata.core.datastore.block.TableBlockInfo;
 import org.apache.carbondata.core.metadata.blocklet.DataFileFooter;
 import org.apache.carbondata.core.metadata.blocklet.SegmentInfo;
-import org.apache.carbondata.core.datastorage.FileHolder;
-import org.apache.carbondata.core.datastorage.impl.FileFactory;
-import org.apache.carbondata.core.datastorage.impl.FileHolderImpl;
+import org.apache.carbondata.core.datastore.FileHolder;
+import org.apache.carbondata.core.datastore.impl.FileFactory;
+import org.apache.carbondata.core.datastore.impl.FileHolderImpl;
 import org.apache.carbondata.core.reader.CarbonFooterReader;
 import org.apache.carbondata.core.reader.CarbonIndexFileReader;
 import org.apache.carbondata.core.reader.ThriftReader;

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/util/ValueCompressionUtilTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/util/ValueCompressionUtilTest.java
 
b/core/src/test/java/org/apache/carbondata/core/util/ValueCompressionUtilTest.java
index 17fe306..0e024e9 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/util/ValueCompressionUtilTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/util/ValueCompressionUtilTest.java
@@ -23,29 +23,29 @@ import static org.junit.Assert.assertTrue;
 
 import java.nio.ByteBuffer;
 
-import org.apache.carbondata.core.datastorage.compression.MeasureMetaDataModel;
-import org.apache.carbondata.core.datastorage.compression.WriterCompressModel;
-import 
org.apache.carbondata.core.datastorage.compression.ValueCompressionHolder;
-import 
org.apache.carbondata.core.datastorage.compression.decimal.CompressionMaxMinByte;
-import 
org.apache.carbondata.core.datastorage.compression.decimal.CompressionMaxMinDefault;
-import 
org.apache.carbondata.core.datastorage.compression.decimal.CompressionMaxMinInt;
-import 
org.apache.carbondata.core.datastorage.compression.decimal.CompressionMaxMinLong;
-import 
org.apache.carbondata.core.datastorage.compression.decimal.CompressionMaxMinShort;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalByte;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalDefault;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalInt;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalLong;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalMaxMinByte;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalMaxMinDefault;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalMaxMinInt;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalMaxMinLong;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalMaxMinShort;
-import 
org.apache.carbondata.core.datastorage.compression.nondecimal.CompressionNonDecimalShort;
-import 
org.apache.carbondata.core.datastorage.compression.none.CompressionNoneByte;
-import 
org.apache.carbondata.core.datastorage.compression.none.CompressionNoneDefault;
-import 
org.apache.carbondata.core.datastorage.compression.none.CompressionNoneInt;
-import 
org.apache.carbondata.core.datastorage.compression.none.CompressionNoneLong;
-import 
org.apache.carbondata.core.datastorage.compression.none.CompressionNoneShort;
+import org.apache.carbondata.core.datastore.compression.MeasureMetaDataModel;
+import org.apache.carbondata.core.datastore.compression.WriterCompressModel;
+import org.apache.carbondata.core.datastore.compression.ValueCompressionHolder;
+import 
org.apache.carbondata.core.datastore.compression.decimal.CompressionMaxMinByte;
+import 
org.apache.carbondata.core.datastore.compression.decimal.CompressionMaxMinDefault;
+import 
org.apache.carbondata.core.datastore.compression.decimal.CompressionMaxMinInt;
+import 
org.apache.carbondata.core.datastore.compression.decimal.CompressionMaxMinLong;
+import 
org.apache.carbondata.core.datastore.compression.decimal.CompressionMaxMinShort;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalByte;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalDefault;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalInt;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalLong;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalMaxMinByte;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalMaxMinDefault;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalMaxMinInt;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalMaxMinLong;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalMaxMinShort;
+import 
org.apache.carbondata.core.datastore.compression.nondecimal.CompressionNonDecimalShort;
+import 
org.apache.carbondata.core.datastore.compression.none.CompressionNoneByte;
+import 
org.apache.carbondata.core.datastore.compression.none.CompressionNoneDefault;
+import 
org.apache.carbondata.core.datastore.compression.none.CompressionNoneInt;
+import 
org.apache.carbondata.core.datastore.compression.none.CompressionNoneLong;
+import 
org.apache.carbondata.core.datastore.compression.none.CompressionNoneShort;
 import org.apache.carbondata.core.util.ValueCompressionUtil.DataType;
 
 import org.junit.Test;

http://git-wip-us.apache.org/repos/asf/incubator-carbondata/blob/48316190/core/src/test/java/org/apache/carbondata/core/writer/CarbonDictionaryWriterImplTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/org/apache/carbondata/core/writer/CarbonDictionaryWriterImplTest.java
 
b/core/src/test/java/org/apache/carbondata/core/writer/CarbonDictionaryWriterImplTest.java
index 4994942..bee220b 100644
--- 
a/core/src/test/java/org/apache/carbondata/core/writer/CarbonDictionaryWriterImplTest.java
+++ 
b/core/src/test/java/org/apache/carbondata/core/writer/CarbonDictionaryWriterImplTest.java
@@ -39,8 +39,8 @@ import org.apache.carbondata.core.metadata.ColumnIdentifier;
 import org.apache.carbondata.core.path.CarbonStorePath;
 import org.apache.carbondata.core.path.CarbonTablePath;
 import org.apache.carbondata.core.constants.CarbonCommonConstants;
-import org.apache.carbondata.core.datastorage.filesystem.CarbonFile;
-import org.apache.carbondata.core.datastorage.impl.FileFactory;
+import org.apache.carbondata.core.datastore.filesystem.CarbonFile;
+import org.apache.carbondata.core.datastore.impl.FileFactory;
 import org.apache.carbondata.core.reader.CarbonDictionaryColumnMetaChunk;
 import org.apache.carbondata.core.reader.CarbonDictionaryMetadataReaderImpl;
 import org.apache.carbondata.core.reader.CarbonDictionaryReaderImpl;


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