Github user akashrn5 commented on a diff in the pull request: https://github.com/apache/carbondata/pull/2847#discussion_r238657955 --- Diff: core/src/main/java/org/apache/carbondata/core/datastore/compression/GzipCompressor.java --- @@ -0,0 +1,203 @@ +/* + * 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.compression; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.DoubleBuffer; +import java.nio.FloatBuffer; +import java.nio.IntBuffer; +import java.nio.LongBuffer; +import java.nio.ShortBuffer; + +import org.apache.carbondata.core.util.ByteUtil; + +import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream; +import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream; + +public class GzipCompressor implements Compressor { + + public GzipCompressor() { + } + + @Override public String getName() { + return "gzip"; + } + + /* + * Method called for compressing the data and + * return a byte array + */ + private byte[] compressData(byte[] data) { + + ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); + try { + GzipCompressorOutputStream gzipCompressorOutputStream = + new GzipCompressorOutputStream(byteArrayOutputStream); + try { + gzipCompressorOutputStream.write(data); + } catch (IOException e) { + throw new RuntimeException("Error during Compression step " + e.getMessage()); + } finally { + gzipCompressorOutputStream.close(); + } + } catch (IOException e) { + throw new RuntimeException("Error during Compression step " + e.getMessage()); + } + + return byteArrayOutputStream.toByteArray(); + } + + /* + * Method called for decompressing the data and + * return a byte array + */ + private byte[] decompressData(byte[] data) { + + ByteArrayInputStream byteArrayOutputStream = new ByteArrayInputStream(data); + ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream(); + --- End diff -- remove empty line
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