@Override
  public ReturnCode filterCell(final Cell c) {
    if (this.timestamps.contains(c.getTimestamp())) {
      return ReturnCode.INCLUDE;
    } else if (c.getTimestamp() < minTimestamp) {
      // The remaining versions of this column are guaranteed
      // to be lesser than all of the other values.
      return ReturnCode.NEXT_COL;
    }
    return canHint ? ReturnCode.SEEK_NEXT_USING_HINT : ReturnCode.SKIP;
  }
Gets the minimum timestamp requested by filter.
@return minimum timestamp requested by filter.
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/TimestampsFilter.java