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https://issues.apache.org/jira/browse/IMPALA-6311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Riza Suminto resolved IMPALA-6311.
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Fix Version/s: Impala 4.5.0
Target Version: Impala 4.5.0
Resolution: Fixed
> Evaluate smaller FPP for Bloom filters
> --------------------------------------
>
> Key: IMPALA-6311
> URL: https://issues.apache.org/jira/browse/IMPALA-6311
> Project: IMPALA
> Issue Type: Task
> Components: Perf Investigation
> Reporter: Jim Apple
> Assignee: Riza Suminto
> Priority: Major
> Fix For: Impala 4.5.0
>
>
> The Bloom filters are created by estimating the NDV and then using the FPP of
> 75% to get the right size for the filter. This is may be too high to be very
> useful - if our filters are currently filtering more than 75% out, then it is
> only because we are overestimating NDV.
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