@Explain(displayName = "Dp Sort State")
  public String getDpSortStateString() {
    return getDpSortState() == DPSortState.NONE ? null : getDpSortState().toString();
  }
@param lbCtx the lbCtx to set
ql/src/java/org/apache/hadoop/hive/ql/plan/FileSinkDesc.java