jcamachor commented on a change in pull request #812: Hive 22324
URL: https://github.com/apache/hive/pull/812#discussion_r337288412
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File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/stats/HiveRelMdPredicates.java
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@@ -316,7 +315,7 @@ public RelOptPredicateList getPredicates(Union union,
RelMetadataQuery mq) {
public JoinConditionBasedPredicateInference(Join joinRel,
RexNode lPreds, RexNode rPreds) {
- this(joinRel, joinRel instanceof SemiJoin, lPreds, rPreds);
+ this(joinRel, (joinRel instanceof Join) && ((Join)
joinRel).isSemiJoin(), lPreds, rPreds);
Review comment:
`joinRel instanceof Join` is always true.
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