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https://issues.apache.org/jira/browse/HIVE-22003?focusedWorklogId=280696&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-280696
]
ASF GitHub Bot logged work on HIVE-22003:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Jul/19 23:26
Start Date: 22/Jul/19 23:26
Worklog Time Spent: 10m
Work Description: vineetgarg02 commented on pull request #729: HIVE-22003
URL: https://github.com/apache/hive/pull/729#discussion_r306073523
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/SharedWorkOptimizer.java
##########
@@ -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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Issue Time Tracking
-------------------
Worklog Id: (was: 280696)
Time Spent: 50m (was: 40m)
> Shared work optimizer may leave semijoin branches in plan that are not used
> ---------------------------------------------------------------------------
>
> Key: HIVE-22003
> URL: https://issues.apache.org/jira/browse/HIVE-22003
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-22003.01.patch, HIVE-22003.01.patch,
> HIVE-22003.patch
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> This may happen only when the TS are the only operators that are shared.
> Repro attached in q file.
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