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https://issues.apache.org/jira/browse/HIVE-11652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-11652:
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Attachment: HIVE-11652.patch
> Avoid expensive call to removeAll in DefaultGraphWalker
> -------------------------------------------------------
>
> Key: HIVE-11652
> URL: https://issues.apache.org/jira/browse/HIVE-11652
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer, Physical Optimizer
> Affects Versions: 1.3.0, 2.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-11652.patch
>
>
> When the plan is too large, the removeAll call in DefaultGraphWalker (line
> 140) will take very long as it will have to go through the list looking for
> each of the nodes. We try to get rid of this call by rewriting the logic in
> the walker.
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