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Posted to issues@flink.apache.org by "Weijie Guo (Jira)" <ji...@apache.org> on 2023/03/07 12:36:00 UTC

[jira] [Commented] (FLINK-31346) Batch shuffle IO scheduler does not throw TimeoutException if numRequestedBuffers is greater than 0

    [ https://issues.apache.org/jira/browse/FLINK-31346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17697402#comment-17697402 ] 

Weijie Guo commented on FLINK-31346:
------------------------------------

master(1.18) via 5ad2ae2c24ade2655981f609298978d26329466f.

> 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: 1.16.1
>            Reporter: Weijie Guo
>            Assignee: Weijie Guo
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.17.0
>
>
> 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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