public void resetCalciteConfiguration() {
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_CBO_ENABLED)) {
      runCBO = true;
      disableSemJoinReordering = true;
    }
  }
This is the list of operators that are specifically used in Hive.
ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java