Steve Loughran created YARN-4774:
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Summary: ATS can block in shutdown under heavy load
Key: YARN-4774
URL: https://issues.apache.org/jira/browse/YARN-4774
Project: Hadoop YARN
Issue Type: Bug
Components: timelineserver, webapp
Affects Versions: 2.8.0
Reporter: Steve Loughran
Priority: Minor
seen in scale test teardown, ATS blocked in shutdown for some time; stack trace
implies that jetty was waiting for threads to finish.
Hypothesis: the scale of the data being retrieved in a GET was large enough
that the jetty worker threads weren't completing the operations, so blocking
the {{stop()}} operation until they finally finished.
There is support in Jetty for a max shutdown time; this just isn't configured
in YARN. It could be configured, and then ATS & other services could customise
it.
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