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

["Yingjie Cao (Jira)" <ji...@apache.org>]

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

Yingjie Cao updated FLINK-28377:
--------------------------------
    Summary: Decrease the memory size per request for sort-shuffle data read from 8M to 4M  (was: Enable to request less number of data reading buffers for sort-shuffle if there is no enough data)

> 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
>            Priority: Major
>             Fix For: 1.16.0
>
>
> Currently, for sort blocking shuffle, the corresponding data reader always allocate a fixed size of buffers for shuffle data reading even when there is no much data to read which will cause buffer waste. We can optimize this to allocate less number of reading buffers if there is no enough data.



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