@Override
  public int hashCode() {
    int result = vertexName.hashCode();
    result = 31 * result + fragmentNumber;
    result = 31 * result + attemptNumber;
    return result;
  }
@param handler
@param lastFinishableState
@return true if the current state is the same as the lastFinishableState. false if the state has already changed.
llap-server/src/java/org/apache/hadoop/hive/llap/daemon/impl/QueryFragmentInfo.java