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https://issues.apache.org/jira/browse/HIVE-11627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14717199#comment-14717199
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Ashutosh Chauhan commented on HIVE-11627:
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+1 pending tests
> Reduce the number of accesses to hashmaps in PPD
> ------------------------------------------------
>
> Key: HIVE-11627
> URL: https://issues.apache.org/jira/browse/HIVE-11627
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Affects Versions: 1.3.0, 2.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-11627.01.patch, HIVE-11627.patch
>
>
> We retrieve the ExprInfo from the hashmap each time we want to change any of
> its properties. Instead, the number of calls to the hashmap could be
> drastically reduced by retrieving the ExprInfo once, and changing all its
> properties.
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