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https://issues.apache.org/jira/browse/IMPALA-7497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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bharath v resolved IMPALA-7497.
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Resolution: Fixed
Assignee: bharath v
Fix Version/s: Impala 3.2.0
> Consider reintroducing numNulls count in compute stats
> ------------------------------------------------------
>
> Key: IMPALA-7497
> URL: https://issues.apache.org/jira/browse/IMPALA-7497
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 3.0, Impala 2.12.0, Impala 3.1.0
> Reporter: Balazs Jeszenszky
> Assignee: bharath v
> Priority: Major
> Fix For: Impala 3.2.0
>
>
> IMPALA-1003 disabled numNulls calculations for performance reasons. A lot has
> changed since, it'd be good to reevaluate computing numNulls. The planner
> still has some code that uses it for cardinality estimations, so just adding
> it back to compute stats can lead to easy wins.
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