private void restoreBucket(Integer currentBucket, int operation) {
    if(currentBucket != null) {
      setBucket(currentBucket, operation);
    }
  }
An ObjectInspector that will strip out the record identifier so that the underlying writer
doesn't see it.
ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcRecordUpdater.java