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

    switch (field) {
    case START_TIME:
      return isSetStartTime();
    case PROCESSING_TIME:
      return isSetProcessingTime();
    case QUEUE_TIME:
      return isSetQueueTime();
    case RESPONSE_SIZE:
      return isSetResponseSize();
    case CLIENT_ADDRESS:
      return isSetClientAddress();
    case SERVER_CLASS:
      return isSetServerClass();
    case METHOD_NAME:
      return isSetMethodName();
    case CALL_DETAILS:
      return isSetCallDetails();
    case PARAM:
      return isSetParam();
    case USER_NAME:
      return isSetUserName();
    case MULTI_GETS_COUNT:
      return isSetMultiGetsCount();
    case MULTI_MUTATIONS_COUNT:
      return isSetMultiMutationsCount();
    case MULTI_SERVICE_CALLS:
      return isSetMultiServiceCalls();
    case REGION_NAME:
      return isSetRegionName();
    case BLOCK_BYTES_SCANNED:
      return isSetBlockBytesScanned();
    case FS_READ_TIME:
      return isSetFsReadTime();
    }
    throw new java.lang.IllegalStateException();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TOnlineLogRecord.java