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From "Subru Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6813) TestAMRMProxy#testE2ETokenRenewal fails sporadically due to race conditions
Date Wed, 12 Jul 2017 19:12:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084523#comment-16084523

Subru Krishnan commented on YARN-6813:

[~jlowe], thanks for reporting this. The heartbeat interval was kept intentionally low as
the purpose of the test was to trigger token renewals. We can either reduce the AM/NM heartbeat
interval or increase the AM expiry interval. 
I prefer the former as the latter will result in longer time for triggering token renewal.

> TestAMRMProxy#testE2ETokenRenewal fails sporadically due to race conditions
> ---------------------------------------------------------------------------
>                 Key: YARN-6813
>                 URL: https://issues.apache.org/jira/browse/YARN-6813
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 2.8.1
>            Reporter: Jason Lowe
> The testE2ETokenRenewal test lowers the AM and nodemanager heartbeat intervals to only
1.5 seconds.  This leaves very little headroom over the default heartbeat intervals of 1 second.
If the AM hits a hiccup and runs a bit slower than expected the unit test can fail because
the RM expires the AM.

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