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https://issues.apache.org/jira/browse/FLINK-31346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weijie Guo updated FLINK-31346:
-------------------------------
    Affects Version/s: 1.17.0

> Batch shuffle IO scheduler does not throw TimeoutException if 
> numRequestedBuffers is greater than 0
> ---------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-31346
>                 URL: https://issues.apache.org/jira/browse/FLINK-31346
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Network
>    Affects Versions: 1.17.0, 1.16.1
>            Reporter: Weijie Guo
>            Assignee: Weijie Guo
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.17.0, 1.16.2
>
>
> We currently rely on throw exception to trigger downstream task failover to 
> avoid read buffer request deadlock. But if {{numRequestedBuffers}} is greater 
> than 0, IO scheduler does not throw {{TimeoutException}}. This will cause a 
> deadlock.



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