morrySnow commented on code in PR #17994:
URL: https://github.com/apache/doris/pull/17994#discussion_r1143100271
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/processor/pre/EliminateLogicalSelectHint.java:
##########
@@ -57,6 +57,17 @@ public LogicalPlan visitLogicalSelectHint(
}
private void setVar(SelectHint selectHint, StatementContext context) {
+ // if sv set enable_nereids_planner=true and hint set
enable_nereids_planner=false, we should set
+ // enable_fallback_to_original_planner=true and revert it after
executing.
+ boolean isNereidsPlannerDisabled = false;
+ if (selectHint.getParameters().containsKey("enable_nereids_planner")) {
Review Comment:
key should use SessionVariable.ENABLE_NEREIDS_PLANNER
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/processor/pre/EliminateLogicalSelectHint.java:
##########
@@ -72,5 +72,19 @@ private void setVar(SelectHint selectHint, StatementContext
context) {
}
}
}
+ // if sv set enable_nereids_planner=true and hint set
enable_nereids_planner=false, we should set
+ // enable_fallback_to_original_planner=true and revert it after
executing.
+ // throw exception to fall back to original planner
+ if (!sessionVariable.isEnableNereidsPlanner()) {
+ String key = "enable_fallback_to_original_planner";
Review Comment:
we should use
`org.apache.doris.qe.SessionVariable#ENABLE_FALLBACK_TO_ORIGINAL_PLANNER`
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