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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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Timo Walther closed FLINK-20485.
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Resolution: Fixed
[FLINK-20485][table-runtime] Reuse internal data structures in
ExternalSerializer
Fixed in 1.13.0: c2972b6e336cc3b3a6cbd22c69a6710dab5246e6
Fixed in 1.12.1: 81bdd3041fb51695b1693d78c46150bfbf7e5748
[FLINK-20485][table] Wrap data views into a lazy binary format
Fixed in 1.13.0: fed8f033b5dcc77c4a3a0b9721f8eb92fd5cf9a8
Fixed in 1.12.1: 0dcd042fe70366993b6cf943d92f6bee754b0c73
> 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
> Labels: pull-request-available
> Fix For: 1.13.0, 1.12.1
>
>
> 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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