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https://issues.apache.org/jira/browse/IMPALA-2934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17253015#comment-17253015
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Tim Armstrong commented on IMPALA-2934:
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I closed the subtasks since we'd want to rethink this anyway - it was assuming
a particular approach.
> Statistics maintenance
> ----------------------
>
> Key: IMPALA-2934
> URL: https://issues.apache.org/jira/browse/IMPALA-2934
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Affects Versions: Impala 2.2
> Reporter: Mostafa Mokhtar
> Priority: Minor
> Labels: performance, planner
>
> Introduce the mechanism to keep statistics up–to–date to ensure that the
> planner doesn't operate on stale or missing statistics
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