[bug]Join order changed when execute with the udf by different parallel hint

2023-01-10 05:08:04 +00:00
parent 040304870f
commit c0acd5e468
4 changed files with 11 additions and 1 deletions
--- a/src/sql/optimizer/ob_optimizer.cpp
+++ b/src/sql/optimizer/ob_optimizer.cpp
@ -667,6 +667,12 @@ int ObOptimizer::init_env_info(ObDMLStmt &stmt)
      ctx_.set_parallel_rule(PXParallelRule::USE_PX_DEFAULT);
      ctx_.set_parallel(ObGlobalHint::DEFAULT_PARALLEL);
    }
+    //following above rule, but if stmt contain pl_udf, force das, parallel should be 1
+    if (parallel > 1 && ctx_.has_pl_udf()) {
+      ctx_.set_parallel_rule(PXParallelRule::PL_UDF_DAS_FORCE_SERIALIZE);
+      ctx_.set_parallel(1);
+      ctx_.add_plan_note(PARALLEL_DISABLED_BY_PL_UDF_DAS, 1);
+    }
  }

  // init column usage info