Github user ilooner commented on a diff in the pull request:
https://github.com/apache/drill/pull/1117#discussion_r167675404
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/JoinPruleBase.java
---
@@ -246,4 +246,17 @@ public RelNode convertChild(final DrillJoinRel join,
final RelNode rel) throws
}
+ // DRILL-6089 make sure no collations are added to HashJoin
+ public static RelTraitSet removeCollation(RelTraitSet traitSet,
RelOptRuleCall call)
+ {
+ RelTraitSet newTraitSet = call.getPlanner().emptyTraitSet();
+
+ for (RelTrait trait: traitSet) {
+ if (!trait.getTraitDef().getTraitClass().equals(RelCollation.class))
{
--- End diff --
I don't see a way to remove a trait with RelTraitSet.replace(). So I made
this removeCollation method instead.
---
