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https://issues.apache.org/jira/browse/FLINK-20485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu updated FLINK-20485:
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Fix Version/s: 1.12.0
> Map views are deserialized multiple times
> -----------------------------------------
>
> Key: FLINK-20485
> URL: https://issues.apache.org/jira/browse/FLINK-20485
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Runtime
> Affects Versions: 1.12.0
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Critical
> Fix For: 1.12.0
>
>
> The rework of aggregate functions in FLINK-18809 and FLINK-15803 caused a
> performance regression due to map views being deserialized multiple times. A
> solution is to wrap the logic back into a RAW type to have lazy binary format
> semantics.
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