@org.apache.thrift.annotation.Nullable
    public static _Fields findByThriftId(int fieldId) {
      switch(fieldId) {
        case 1: // REPLACE
          return REPLACE;
        case 2: // FILES_ADDED
          return FILES_ADDED;
        case 3: // FILES_ADDED_CHECKSUM
          return FILES_ADDED_CHECKSUM;
        case 4: // SUB_DIRECTORY_LIST
          return SUB_DIRECTORY_LIST;
        case 5: // PARTITION_VAL
          return PARTITION_VAL;
        default:
          return null;
      }
    }
Find the _Fields constant that matches fieldId, or null if its not found.
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/InsertEventRequestData.java