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https://issues.apache.org/jira/browse/YARN-3545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14700542#comment-14700542
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Li Lu commented on YARN-3545:
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Hi [~xgong], you're right that right now this critical section can only be
accessed by the AM and RM, and there's no concurrency for the same application
id (unless I'm missing something, which is possible :) ). The fix here is to be
consistent with the original TimelineCollectorManager, which has a synchronized
map to store appId->collector mappings. We may want to preserve this
thread-safe semantic for collector managers for future usages.
Right now this patch is stale and I would personally assign it with a low
priority.
> Investigate the concurrency issue with the map of timeline collector
> --------------------------------------------------------------------
>
> Key: YARN-3545
> URL: https://issues.apache.org/jira/browse/YARN-3545
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Zhijie Shen
> Assignee: Li Lu
> Attachments: YARN-3545-YARN-2928.000.patch
>
>
> See the discussion in YARN-3390 for details. Let's continue the discussion
> here.
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