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https://issues.apache.org/jira/browse/BEAM-8126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yueyang Qiu closed BEAM-8126.
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Fix Version/s: 2.16.0
Resolution: Fixed
> HllCount needs to handle null sketches properly
> -----------------------------------------------
>
> Key: BEAM-8126
> URL: https://issues.apache.org/jira/browse/BEAM-8126
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Yueyang Qiu
> Assignee: Yueyang Qiu
> Priority: Minor
> Fix For: 2.16.0
>
>
> BigQuery uses `null` to represent result of aggregations of empty input. We
> need to make sure `null` sketches are handled properly in Beam and users have
> a smooth end-to-end experience using BigQuery's `HLL_COUNT` in conjunction
> with Beam's `HllCount`.
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