Indhumathi27 commented on code in PR #6202:
URL: https://github.com/apache/hive/pull/6202#discussion_r2668488039
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ql/src/java/org/apache/hadoop/hive/ql/parse/TezCompiler.java:
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@@ -1300,9 +1300,17 @@ private static void
runTopNKeyOptimization(OptimizeTezProcContext procCtx)
return;
}
+ // Restrict TopNKey matching to GROUP BY / JOIN ReduceSinks, except for
PTF queries.
+ String reduceSinkOp = ReduceSinkOperator.getOperatorName() + "%";
+ String topNKeyRegexPattern = hasPTFReduceSink(procCtx) ? reduceSinkOp :
+ ".*(" + GroupByOperator.getOperatorName() + "|" +
Review Comment:
yes. Some queries with Group by not matching current Regex pattern without
the prefix
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