ngsg commented on code in PR #5423:
URL: https://github.com/apache/hive/pull/5423#discussion_r1824357697
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ql/src/java/org/apache/hadoop/hive/ql/optimizer/UnionDistinctMerger.java:
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@@ -63,10 +75,10 @@ public Object process(Node nd, Stack<Node> stack,
NodeProcessorCtx procCtx,
// The stack contains at least 8 operators,
UNION-GBY-RS-GBY-UNION-GBY-RS-GBY.
// The leftmost UNION is on stack.size() - 8 and the rightmost GBY is on
stack.size() - 1.
- Collection<Operator> allOps = context.pCtx.getAllOps();
+ HashSet<Operator> allOps = new HashSet<>(context.pCtx.getAllOps());
Review Comment:
fixed
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