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Posted to issues@flink.apache.org by "Xintong Song (Jira)" <ji...@apache.org> on 2021/01/15 07:02:01 UTC
[jira] [Updated] (FLINK-13554) ResourceManager should have a
timeout on starting new TaskExecutors.
[ https://issues.apache.org/jira/browse/FLINK-13554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xintong Song updated FLINK-13554:
---------------------------------
Parent: FLINK-20988
Issue Type: Sub-task (was: Improvement)
> ResourceManager should have a timeout on starting new TaskExecutors.
> --------------------------------------------------------------------
>
> Key: FLINK-13554
> URL: https://issues.apache.org/jira/browse/FLINK-13554
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Coordination
> Affects Versions: 1.9.0
> Reporter: Xintong Song
> Priority: Critical
> Fix For: 1.13.0
>
>
> Recently, we encountered a case that one TaskExecutor get stuck during launching on Yarn (without fail), causing that job cannot recover from continuous failovers.
> The reason the TaskExecutor gets stuck is due to our environment problem. The TaskExecutor gets stuck somewhere after the ResourceManager starts the TaskExecutor and waiting for the TaskExecutor to be brought up and register. Later when the slot request timeouts, the job fails over and requests slots from ResourceManager again, the ResourceManager still see a TaskExecutor (the stuck one) is being started and will not request new container from Yarn. Therefore, the job can not recover from failure.
> I think to avoid such unrecoverable status, the ResourceManager need to have a timeout on starting new TaskExecutor. If the starting of TaskExecutor takes too long, it should just fail the TaskExecutor and starts a new one.
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