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https://issues.apache.org/jira/browse/HIVE-19971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526452#comment-16526452
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Andrew Sherman commented on HIVE-19971:
---------------------------------------
Thanks [~kgyrtkirk] and [~pvary] for the review and push!
> TestRuntimeStats.testCleanup() is flaky
> ---------------------------------------
>
> Key: HIVE-19971
> URL: https://issues.apache.org/jira/browse/HIVE-19971
> Project: Hive
> Issue Type: Task
> Reporter: Andrew Sherman
> Assignee: Andrew Sherman
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-19971.1.patch, HIVE-19971.2.patch,
> HIVE-19971.3.patch, HIVE-19971.4.patch
>
>
> This test is timing dependent and sometimes fails. [You can see that it
> sometimes fails in otherwise clean
> runs|https://issues.apache.org/jira/issues/?jql=text%20~%20%22TestRuntimeStats%22].
> The test inserts a stat, sleeps for 2 seconds, inserts another stat, then
> deletes stats that are older than 1 second. The test asserts that exactly one
> stat is deleted. If the deletion is slow for some reason (perhaps a GC?) then
> 2 stats will be deleted and the test will fail. The trouble is that the 1
> second window is too small to work consistently.
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