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https://issues.apache.org/jira/browse/FLINK-35166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weijie Guo updated FLINK-35166:
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Affects Version/s: 2.1.0
> Improve the performance of Hybrid Shuffle when enable memory decoupling
> -----------------------------------------------------------------------
>
> Key: FLINK-35166
> URL: https://issues.apache.org/jira/browse/FLINK-35166
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Affects Versions: 2.1.0
> Reporter: Jiang Xin
> Assignee: Jiang Xin
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0
>
>
> Currently, the tiered result partition creates the SortBufferAccumulator with
> the number of expected buffers as min(numSubpartitions+1, 512), thus the
> SortBufferAccumulator may obtain very few buffers when the parallelism is
> small. We can easily make the number of expected buffers 512 by default to
> have a better performance when the buffers are sufficient.
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