Jeffrey Chang created YARN-11588:
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Summary: Fix uncleaned threads in YARN Federation interceptor
threadpool
Key: YARN-11588
URL: https://issues.apache.org/jira/browse/YARN-11588
Project: Hadoop YARN
Issue Type: Bug
Reporter: Jeffrey Chang
In YARN Federation a new interceptor is generated for each new user that calls
YARN Router. This also generates a threadpool which is used to call YARN RM.
However, when the call is finished the threadpool threads never exits, causing
the interceptor object for the user to never be cleaned up. This causes an
issue when the number of users is large in the YARN cluster, as the number of
idle, uncleaned thread can reach # of users calling router times number of
active core threads in thread pool. This causes performance issues in router
due to too many idle threads.
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