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https://issues.apache.org/jira/browse/IMPALA-14600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Quanlong Huang resolved IMPALA-14600.
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Fix Version/s: Impala 5.0.0
Resolution: Fixed
> HBO for computing AggregationNode cardinality
> ---------------------------------------------
>
> Key: IMPALA-14600
> URL: https://issues.apache.org/jira/browse/IMPALA-14600
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
> Fix For: Impala 5.0.0
>
>
> {{AggregationNode#computeStats()}} can also use historical stats to fix
> cardinality as long as we extract and store them from query profiles.
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