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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4774) ATS can block in shutdown under heavy load
Date Tue, 08 Mar 2016 15:03:40 GMT
Steve Loughran created YARN-4774:
------------------------------------

             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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