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https://issues.apache.org/jira/browse/FLINK-21688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17311501#comment-17311501
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Yun Tang commented on FLINK-21688:
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We can add another configure option apart from current
state.backend.rocksdb.thread.num .You could create another issue focusing on
that and I can assign that ticket to you to make contributions to Flink
community if you want.
> we use setIncreaseParallelism function, can cause slow flush in restore
> -----------------------------------------------------------------------
>
> Key: FLINK-21688
> URL: https://issues.apache.org/jira/browse/FLINK-21688
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Affects Versions: 1.11.3
> Reporter: xiaogang zhou
> Priority: Major
>
> we use setIncreaseParallelism function, can cause slow flush in restore
> rescaling case. As this function limits the HIGH threads to 1.
>
> Why not set the MAX jobs to 40, which will offer more flush thread to enable
> a fast recovery
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