vikramahuja1001 commented on a change in pull request #4005:
URL: https://github.com/apache/carbondata/pull/4005#discussion_r531550965



##########
File path: 
integration/spark/src/test/scala/org/apache/carbondata/spark/testsuite/cleanfiles/TestCleanFilesCommandPartitionTable.scala
##########
@@ -0,0 +1,361 @@
+/*
+ * 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.spark.testsuite.cleanfiles
+
+import java.io.{File, PrintWriter}
+
+import scala.io.Source
+
+import org.apache.spark.sql.{CarbonEnv, Row}
+import org.apache.spark.sql.test.util.QueryTest
+import org.scalatest.BeforeAndAfterAll
+
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.datastore.impl.FileFactory
+import org.apache.carbondata.core.util.CarbonProperties
+import org.apache.carbondata.core.util.path.CarbonTablePath
+
+class TestCleanFilesCommandPartitionTable extends QueryTest with 
BeforeAndAfterAll {
+
+  var count = 0
+
+  test("clean up table and test trash folder with IN PROGRESS segments") {
+    // do not send the segment folders to trash
+    createParitionTable()
+    loadData()
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = path + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonTablePath.TRASH_DIR
+    editTableStatusFile(path)
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    val segmentNumber1 = sql(s"""show segments for table cleantest""").count()
+    assert(segmentNumber1 == 4)
+    sql(s"CLEAN FILES FOR TABLE cleantest").show
+    val segmentNumber2 = sql(s"""show segments for table cleantest""").count()
+    assert(0 == segmentNumber2)
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    val list = getFileCountInTrashFolder(trashFolderPath)
+    // no carbondata file is added to the trash
+    assert(list == 0)
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+  test("clean up table and test trash folder with Marked For Delete segments") 
{
+    // do not send MFD folders to trash
+    createParitionTable()
+    loadData()
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = path + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonTablePath.TRASH_DIR
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    sql(s"""Delete from table cleantest where segment.id in(1)""")
+    val segmentNumber1 = sql(s"""show segments for table cleantest""").count()
+    sql(s"CLEAN FILES FOR TABLE cleantest").show
+    val segmentNumber2 = sql(s"""show segments for table cleantest""").count()
+    assert(segmentNumber1 == segmentNumber2 + 1)
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    count = 0
+    var list = getFileCountInTrashFolder(trashFolderPath)
+    // no carbondata file is added to the trash
+    assert(list == 0)
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+  test("clean up table and test trash folder with compaction") {
+    // do not send compacted folders to trash
+    createParitionTable()
+    loadData()
+    sql(s"""ALTER TABLE CLEANTEST COMPACT "MINOR" """)
+
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = path + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonTablePath.TRASH_DIR
+    assert(!FileFactory.isFileExist(trashFolderPath))
+
+    val segmentNumber1 = sql(s"""show segments for table cleantest""").count()
+    sql(s"CLEAN FILES FOR TABLE cleantest").show
+    val segmentNumber2 = sql(s"""show segments for table cleantest""").count()
+    assert(segmentNumber1 == segmentNumber2 + 4)
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    count = 0
+    val list = getFileCountInTrashFolder(trashFolderPath)
+    // no carbondata file is added to the trash
+    assert(list == 0)
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+
+
+  test("test trash folder with 2 segments with same segment number") {
+    createParitionTable()
+    sql(s"""INSERT INTO CLEANTEST SELECT 1, 2,"hello","abc"""")
+
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = path + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonTablePath.TRASH_DIR
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    deleteTableStatusFile(path)
+
+    assert(!FileFactory.isFileExist(trashFolderPath))
+    sql(s"CLEAN FILES FOR TABLE cleantest").show()
+    count = 0
+    var list = getFileCountInTrashFolder(trashFolderPath)
+    assert(list == 2)
+
+    sql(s"""INSERT INTO CLEANTEST SELECT 1, 2,"hello","abc"""")
+    deleteTableStatusFile(path)
+
+    sql(s"CLEAN FILES FOR TABLE cleantest").show()
+    count = 0
+    list = getFileCountInTrashFolder(trashFolderPath)
+    assert(list == 4)
+
+    sql(s"CLEAN FILES FOR TABLE cleantest OPTIONS('force'='true')").show()
+    count = 0
+    list = getFileCountInTrashFolder(trashFolderPath)
+    // no carbondata file is added to the trash
+    assert(list == 0)
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+  test("clean up table and test trash folder with stale segments") {
+    sql("""DROP TABLE IF EXISTS C1""")
+    createParitionTable()
+    loadData()
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = CarbonTablePath.getTrashFolderPath(path)
+    // All 4  segments are made as stale segments, they should be moved to the 
trash folder
+    deleteTableStatusFile(path)
+
+    sql(s"CLEAN FILES FOR TABLE CLEANTEST").show()
+    checkAnswer(sql(s"""select count(*) from cleantest"""),
+      Seq(Row(0)))
+
+    val timeStamp = getTimestampFolderName(trashFolderPath)
+    // test recovery from partition table
+    val segment0Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_0"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment0Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    val segment1Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_1"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment1Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    val segment2Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_2"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment2Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    val segment3Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_3"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment3Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    checkAnswer(sql(s"""select count(*) from cleantest"""),
+      Seq(Row(4)))
+
+    sql("""DROP TABLE IF EXISTS C1""")
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+
+  test("clean up table and test trash folder with stale segments part 2") {
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+    sql("""DROP TABLE IF EXISTS C1""")
+
+    sql("create table cleantest(" +
+      "value int) partitioned by (name string, age int) stored as carbondata")
+    sql("insert into cleantest values (30, 'amy', 12), (40, 'bob', 13)")
+    sql("insert into cleantest values (30, 'amy', 20), (10, 'bob', 13)")
+    sql("insert into cleantest values (30, 'cat', 12), (40, 'dog', 13)")
+
+
+    val path = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext.sparkSession)
+      .getTablePath
+    val trashFolderPath = CarbonTablePath.getTrashFolderPath(path)
+    // All 4  segments are made as stale segments, they should be moved to the 
trash folder
+    // createStaleSegments(path)
+    deleteTableStatusFile(path)
+
+    sql(s"CLEAN FILES FOR TABLE CLEANTEST").show()
+
+    val timeStamp = getTimestampFolderName(trashFolderPath)
+    // test recovery from partition table
+    val segment0Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_0"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment0Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    val segment1Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_1"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment1Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    val segment2Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR 
+ timeStamp +
+      "/Segment_2"
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment2Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    checkAnswer(sql(s"""select count(*) from cleantest"""),
+      Seq(Row(6)))
+    checkAnswer(sql(s"""select count(*) from cleantest where age=13"""),
+      Seq(Row(3)))
+
+    sql("""DROP TABLE IF EXISTS C1""")
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+  test("clean up maintable table and test trash folder with SI with stale 
segments") {
+    createParitionTable()
+    loadData()
+    sql(s"""CREATE INDEX SI_CLEANTEST on cleantest(name) as 'carbondata' """)
+    checkAnswer(sql(s"""select count(*) from cleantest"""),
+      Seq(Row(4)))
+    checkAnswer(sql(s"""select count(*) from si_cleantest"""),
+      Seq(Row(4)))
+
+    val mainTablePath = CarbonEnv.getCarbonTable(Some("default"), 
"cleantest")(sqlContext
+      .sparkSession).getTablePath
+    deleteTableStatusFile(mainTablePath)
+    val mainTableTrashFolderPath = mainTablePath + 
CarbonCommonConstants.FILE_SEPARATOR +
+      CarbonTablePath.TRASH_DIR
+
+    assert(!FileFactory.isFileExist(mainTableTrashFolderPath))
+
+    sql(s"CLEAN FILES FOR TABLE CLEANTEST").show()
+    checkAnswer(sql(s"""select count(*) from cleantest"""), Seq(Row(0)))
+    checkAnswer(sql(s"""select count(*) from si_cleantest"""), Seq(Row(4)))
+
+    assert(FileFactory.isFileExist(mainTableTrashFolderPath))
+
+    count = 0
+    var listMainTable = getFileCountInTrashFolder(mainTableTrashFolderPath)
+    assert(listMainTable == 8)
+
+    // recovering data from trash folder
+    val timeStamp = getTimestampFolderName(mainTableTrashFolderPath)
+
+    val segment0Path = mainTableTrashFolderPath + 
CarbonCommonConstants.FILE_SEPARATOR +
+      timeStamp + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonCommonConstants.LOAD_FOLDER + '0'
+    val segment1Path = mainTableTrashFolderPath + 
CarbonCommonConstants.FILE_SEPARATOR +
+      timeStamp + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonCommonConstants.LOAD_FOLDER + '1'
+    val segment2Path = mainTableTrashFolderPath + 
CarbonCommonConstants.FILE_SEPARATOR +
+      timeStamp + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonCommonConstants.LOAD_FOLDER + '2'
+    val segment3Path = mainTableTrashFolderPath + 
CarbonCommonConstants.FILE_SEPARATOR +
+      timeStamp + CarbonCommonConstants.FILE_SEPARATOR + 
CarbonCommonConstants.LOAD_FOLDER + '3'
+
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment0Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment1Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment2Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    sql(s"CREATE TABLE c1 USING CARBON LOCATION '$segment3Path'")
+    sql("INSERT INTO cleantest select * from c1").show()
+    sql("drop table c1")
+
+    checkAnswer(sql(s"""select count(*) from cleantest"""),
+      Seq(Row(4)))
+    sql(s"CLEAN FILES FOR TABLE cleantest options('force'='true')").show
+    // no files in trash anymore
+    count = 0
+    listMainTable = getFileCountInTrashFolder(mainTableTrashFolderPath)
+    assert(listMainTable == 0)
+    sql("show segments for table cleantest").show()
+    sql("show segments for table si_cleantest").show()
+    sql("""DROP TABLE IF EXISTS CLEANTEST""")
+  }
+
+  def editTableStatusFile(carbonTablePath: String) : Unit = {
+    val f1 = new File(carbonTablePath + CarbonCommonConstants.FILE_SEPARATOR + 
"Metadata" +
+      CarbonCommonConstants.FILE_SEPARATOR + "tablestatus")  // Original File
+    val f2 = new File(carbonTablePath + CarbonCommonConstants.FILE_SEPARATOR + 
"Metadata" +
+      CarbonCommonConstants.FILE_SEPARATOR + "tmp") // Temporary File
+    val w = new PrintWriter(f2)
+    Source.fromFile(f1).getLines
+      .map { x =>
+        x.replaceAll("Success", "In Progress")
+      }
+      // scalastyle:off println
+      .foreach(x => w.println(x))
+    // scalastyle:on println
+    w.close()
+    f2.renameTo(f1)
+  }
+
+
+  def getFileCountInTrashFolder(dirPath: String) : Int = {

Review comment:
       i don't understand, what do i have to do here?




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