rubenada commented on code in PR #2831:
URL: https://github.com/apache/calcite/pull/2831#discussion_r896461609
##########
core/src/main/java/org/apache/calcite/plan/RelOptUtil.java:
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@@ -475,6 +475,10 @@ public static RelNode copyRelHints(RelNode originalRel,
RelNode newRel) {
* or {@code newRel} directly if one of them are not {@link Hintable}
*/
public static RelNode copyRelHints(RelNode originalRel, RelNode newRel,
boolean filterHints) {
+ if (originalRel == newRel && !filterHints) {
+ return originalRel;
Review Comment:
@danny0405 given the imminent code freeze and RC process for the next
release, we need to hurry if we want to include this patch in the next Calcite
version. wdyt?
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