Github user jackylk commented on a diff in the pull request:

    
https://github.com/apache/incubator-carbondata/pull/609#discussion_r102876604
  
    --- Diff: 
core/src/main/java/org/apache/carbondata/core/util/CarbonUtil.java ---
    @@ -471,6 +472,33 @@ public static int nextGreaterValueToTarget(int 
currentIndex,
                 numberCompressor.unCompress(indexMap, 0, indexMap.length));
       }
     
    +  public static int[] getUnCompressColumnIndex(int totalLength, ByteBuffer 
buffer, int offset) {
    +    buffer.position(offset);
    +    int indexDataLength = buffer.getInt();
    +    int indexMapLength = totalLength - indexDataLength - 
CarbonCommonConstants.INT_SIZE_IN_BYTE;
    +    //    byte[] indexData = new byte[indexDataLength];
    --- End diff --
    
    Is there code needed?


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