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https://issues.apache.org/jira/browse/YARN-360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated YARN-360:
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Attachment: YARN-360.patch
> Allow apps to concurrently register tokens for renewal
> ------------------------------------------------------
>
> Key: YARN-360
> URL: https://issues.apache.org/jira/browse/YARN-360
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 0.23.3, 3.0.0, 2.0.0-alpha
> Reporter: Daryn Sharp
> Priority: Critical
> Attachments: YARN-360.patch
>
>
> {{DelegationTokenRenewer#addApplication}} has an unnecessary {{synchronized}}
> keyword. This serializes job submissions and can add unnecessary latency
> and/or hang all submissions if there are problems renewing the token.
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