vineetgarg02 commented on a change in pull request #729: HIVE-22003
URL: https://github.com/apache/hive/pull/729#discussion_r306073523
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File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/SharedWorkOptimizer.java
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@@ -486,6 +510,75 @@ private static boolean
sharedWorkOptimization(ParseContext pctx, SharedWorkOptim
return mergedExecuted;
}
+ private static void replaceSemijoinExpressions(TableScanOperator tsOp,
List<ExprNodeDesc> semijoinExprNodes) {
Review comment:
So the SJ branch from retainable TS is pushed to discardable TS so that it
is later pushed to discardable TS's children filter op? Why do we want to do
that? Shouldn't retainable SJ be retained with retainable FILTER op only?
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