src/main/java/org/apache/hadoop/hdfs/server/namenode/AbstractQueryEngine.java
@Override // QueryEngine
  public Map<String, Long> modTimeHistogram(
      Stream<INode> inodes, String sum, String find, String timeRange) {
    return new HistogramInvoker(this, "modTime", sum, find, inodes).invoke().getHistogram();
  }
/**
   * Creates a histogram representation of INodes where the X-axis represents modification time
   * ranges.
   *
   * @param inodes the filtered inodes to operate with
   * @param sum the Y-axis type
   * @param find optional; a find operation to perform; overrides sum
   * @return a map representing bins as Strings and the sum/finds as Longs
   */
Creates a histogram representation of INodes where the X-axis represents modification time
ranges.

@param inodes the filtered inodes to operate with
@param sum the Y-axis type
@param find optional; a find operation to perform; overrides sum
@return a map representing bins as Strings and the sum/finds as Longs
Creates a histogram representation of INodes where the X - axis represents modification time ranges . @param inodes the filtered inodes to operate with @param sum the Y - axis type @param find optional ; a find operation to perform ; overrides sum @return a map representing bins as Strings and the sum / finds as Longs
@Override 
  public Map<String, Long> modTimeHistogram(
      Stream<INode> inodes, String sum, String find, String timeRange) {
    return new HistogramInvoker(this, "modTime", sum, find, inodes).invoke().getHistogram();
  }
@ Override public Map < String , Long > modTimeHistogram ( Stream < INode > inodes , String sum , String find , String timeRange ) { return new HistogramInvoker ( this , "modTime" , sum , find , inodes ) . invoke ( ) . getHistogram ( ) ; }
Creates a histogram representation of INodes where the X-axis represents modification time
 ranges.
Creates a histogram representation of INodes where the X - axis represents modification time ranges .
// QueryEngine