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

    
https://github.com/apache/incubator-carbondata/pull/627#discussion_r104614642
  
    --- Diff: 
core/src/main/java/org/apache/carbondata/scan/filter/executer/IncludeFilterExecuterImpl.java
 ---
    @@ -154,24 +154,45 @@ private BitSet setFilterdIndexToBitSetWithColumnIndex(
       }
     
       private BitSet setFilterdIndexToBitSet(DimensionColumnDataChunk 
dimensionColumnDataChunk,
    -      int numerOfRows) {
    -    BitSet bitSet = new BitSet(numerOfRows);
    -    if (dimensionColumnDataChunk instanceof FixedLengthDimensionDataChunk) 
{
    -      FixedLengthDimensionDataChunk fixedDimensionChunk =
    -          (FixedLengthDimensionDataChunk) dimensionColumnDataChunk;
    -      byte[][] filterValues = dimColumnExecuterInfo.getFilterKeys();
    -      for (int k = 0; k < filterValues.length; k++) {
    -        for (int j = 0; j < numerOfRows; j++) {
    -          if (ByteUtil.UnsafeComparer.INSTANCE
    -              .compareTo(fixedDimensionChunk.getCompleteDataChunk(), j * 
filterValues[k].length,
    -                  filterValues[k].length, filterValues[k], 0, 
filterValues[k].length) == 0) {
    -            bitSet.set(j);
    -          }
    -        }
    -      }
    -    }
    -    return bitSet;
    -  }
    +         int numerOfRows) {
    +
    +       BitSet bitSet = new BitSet(numerOfRows);
    +       //BitSet bitSet1 = new BitSet(numerOfRows);
    +       
    +       if (dimensionColumnDataChunk instanceof 
FixedLengthDimensionDataChunk) {
    +         FixedLengthDimensionDataChunk fixedDimensionChunk =
    +             (FixedLengthDimensionDataChunk) dimensionColumnDataChunk;
    +         byte[][] filterValues = dimColumnExecuterInfo.getFilterKeys();
    +         byte[] dataChunk= fixedDimensionChunk.getCompleteDataChunk();
    +
    +             //long start = System.currentTimeMillis();
    +         for (int k = 0; k < filterValues.length; k++) {
    +             
    +             int[] index = 
ByteUtil.UnsafeComparer.INSTANCE.binaryRangeSearch(dataChunk, 0, 
dataChunk.length, filterValues[k]);
    +             for(int i = index[0]; i<=index[1];i++){
    +                     
    +                     bitSet.set(i);
    +             }
    +         }
    +     
    +         //below comments code is used to confirm the binary range search 
is correct  
    --- End diff --
    
    please delete annotation if not used.


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