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https://issues.apache.org/jira/browse/FLINK-10275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann reopened FLINK-10275:
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> StreamTask support object reuse
> -------------------------------
>
> Key: FLINK-10275
> URL: https://issues.apache.org/jira/browse/FLINK-10275
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Affects Versions: 1.7.0
> Reporter: TisonKun
> Priority: Major
> Labels: pull-request-available
>
> StreamTask support efficient object reuse. The purpose behind this is to
> reduce pressure on the garbage collector.
> All objects are reused, without backup copies. The operators and UDFs must be
> careful to not keep any objects as state or not to modify the objects.
> *FYI, now this thread is blocked by FLIP-21. The pull request attached is
> closed for a needed rework.*
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