wenhuitang commented on a change in pull request #1462:
[CALCITE-3353]ProjectJoinTransposeRule caused AssertionError when creating a
new Join
URL: https://github.com/apache/calcite/pull/1462#discussion_r327929648
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File path:
core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableCorrelate.java
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@@ -77,6 +78,13 @@ public static EnumerableCorrelate create(
@Override public EnumerableCorrelate copy(RelTraitSet traitSet,
RelNode left, RelNode right, CorrelationId correlationId,
ImmutableBitSet requiredColumns, JoinRelType joinType) {
+ // Get new collations since the Correlate has new inputs and new condition.
+ ImmutableList<RelCollation> newCollations = ImmutableList.copyOf(
+ RelMdCollation.enumerableCorrelate(
+ getCluster().getMetadataQuery(), left, right, joinType));
+ if (!newCollations.isEmpty()) {
+ traitSet = traitSet.replace(newCollations);
Review comment:
I got it, I thought too much when I tried to solve this problem. I
understood that the other enumerable join class should also have right
collations considering the CALCITE-2554. I will adjust this PR that only
update the collations for MergeJoin. And abort the rule if the new inputs of
MergeJoin are not sorted(the result of RelMdCollation.mergeJoin for new
MergeJoin is empty).
Is this the suitable solution?
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