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Posted to issues@flink.apache.org by "Yingjie Cao (Jira)" <ji...@apache.org> on 2022/07/22 03:36:00 UTC

[jira] [Resolved] (FLINK-28377) Decrease the memory size per request for sort-shuffle data read from 8M to 4M

     [ https://issues.apache.org/jira/browse/FLINK-28377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yingjie Cao resolved FLINK-28377.
---------------------------------
      Assignee: Yuxin Tan
    Resolution: Fixed

Merged into master via cfc5d724217cda4140d7efda552e83b8ba36ffb6

> Decrease the memory size per request for sort-shuffle data read from 8M to 4M
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-28377
>                 URL: https://issues.apache.org/jira/browse/FLINK-28377
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Network
>            Reporter: Yingjie Cao
>            Assignee: Yuxin Tan
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.16.0
>
>
> Currently, for sort blocking shuffle, the corresponding data reader always allocate a fixed size of 8M buffers for shuffle data reading. FLINK-28373 can increase buffer utilization, after which, we can reduce the buffer size per request to reduce the time waiting for buffers. (This change is guarded by TPC-DS test that there is no performance regression)



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