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Posted to yarn-issues@hadoop.apache.org by "Qi Zhu (Jira)" <ji...@apache.org> on 2021/03/16 09:42:00 UTC
[jira] [Commented] (YARN-9618) NodeListManager event improvement
[ https://issues.apache.org/jira/browse/YARN-9618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17302371#comment-17302371 ]
Qi Zhu commented on YARN-9618:
------------------------------
[~bibinchundatt] [~pbacsko] [~ebadger] [~epayne] [~gandras] [~bteke]
Could you help review this?
I updated a patch:
# Added another async Event handler similar to scheduler.
# Instead of adding events to dispatcher directly call RMApp event handler.
Thanks.
> NodeListManager event improvement
> ---------------------------------
>
> Key: YARN-9618
> URL: https://issues.apache.org/jira/browse/YARN-9618
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Bibin Chundatt
> Assignee: Qi Zhu
> Priority: Critical
> Attachments: YARN-9618.001.patch, YARN-9618.002.patch
>
>
> Current implementation nodelistmanager event blocks async dispacher and can cause RM crash and slowing down event processing.
> # Cluster restart with 1K running apps . Each usable event will create 1K events over all events could be 5k*1k events for 5K cluster
> # Event processing is blocked till new events are added to queue.
> Solution :
> # Add another async Event handler similar to scheduler.
> # Instead of adding events to dispatcher directly call RMApp event handler.
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