public boolean isSet(_Fields field) {
    if (field == null) {
      throw new java.lang.IllegalArgumentException();
    }

    switch (field) {
    case SCHEDULED_EXECUTION_ID:
      return isSetScheduledExecutionId();
    case POLICY:
      return isSetPolicy();
    case DUMP_EXECUTION_ID:
      return isSetDumpExecutionId();
    case METADATA:
      return isSetMetadata();
    case PROGRESS:
      return isSetProgress();
    case MESSAGE_FORMAT:
      return isSetMessageFormat();
    }
    throw new java.lang.IllegalStateException();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/ReplicationMetrics.java