Jason Lowe created YARN-5353:
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Summary: ResourceManager can leak delegation tokens when they are
shared across apps
Key: YARN-5353
URL: https://issues.apache.org/jira/browse/YARN-5353
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 2.6.1, 2.7.0
Reporter: Jason Lowe
Priority: Critical
Recently saw a ResourceManager go into heavy GC. Heap dump showed that there
were millions of delegation tokens on the heap. It looks like most of them
belonged to the appTokens map in DelegationTokenRenewer. When an app completes
and tokens are removed for it, I noticed that the appTokens entry for the app
is not cleaned up if tokens were shared with other active apps.
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