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https://issues.apache.org/jira/browse/HIVE-22710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17011498#comment-17011498
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Chinna Rao Lalam commented on HIVE-22710:
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Hi [~jcamachorodriguez],
We encountered this issue and when analyzing we come across these issues
CALCITE-2883 And HIVE-21365. Do you think still OOM problem is there in
HepPlanner of CALCITE. Please throw some insights about this issue.
> When set CBO on, CalcitePlanner genOPTree will be Out Of Memory
> ---------------------------------------------------------------
>
> Key: HIVE-22710
> URL: https://issues.apache.org/jira/browse/HIVE-22710
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.1.0, 3.1.2
> Reporter: LuGuangMing
> Priority: Major
> Attachments: error_stack.log, sample.sql
>
>
> When set hive.cbo.enable=true, and execute a SQL contains union all and join
> to insert the result into three tables. Outofmemoryerror will appear in the
> compilation phase. For detailed SQL statements and error logs, please refer
> to the attachment. The same problem exists in hive 4.0.0
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