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https://issues.apache.org/jira/browse/YARN-9618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17303124#comment-17303124
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Qi Zhu edited comment on YARN-9618 at 3/17/21, 9:20 AM:
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[~gandras] [~ebadger] [~pbacsko]
Added the EventDispatcher<NodeListManagerEvent> in created logic, to make sure
safe.
Also, i have added a press test, with 1000 nodes, with 1000 rmApps, confirmed
that total 100000 event will trigger in RMApp handle.
If you any other advice?
Thanks.
was (Author: zhuqi):
[~gandras] [~ebadger]
Added the EventDispatcher<NodeListManagerEvent> in created logic, to make sure
safe.
Also, i have added a press test, with 1000 nodes, with 1000 rmApps, confirmed
that total 100000 event will trigger in RMApp handle.
If you any other advice?
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,
> YARN-9618.003.patch, YARN-9618.004.patch, YARN-9618.005.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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