Daryn Sharp created YARN-360:
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Summary: 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: 2.0.0-alpha, 3.0.0, 0.23.3
Reporter: Daryn Sharp
Priority: Critical
{{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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