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Posted to mapreduce-issues@hadoop.apache.org by "Oleksandr Shevchenko (JIRA)" <ji...@apache.org> on 2018/09/10 15:13:00 UTC
[jira] [Assigned] (MAPREDUCE-7136) TestMRAppMetrics should shutdown
DefaultMetricsSystem after completion
[ https://issues.apache.org/jira/browse/MAPREDUCE-7136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Oleksandr Shevchenko reassigned MAPREDUCE-7136:
-----------------------------------------------
Assignee: Oleksandr Shevchenko
> TestMRAppMetrics should shutdown DefaultMetricsSystem after completion
> ----------------------------------------------------------------------
>
> Key: MAPREDUCE-7136
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7136
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: test
> Reporter: Oleksandr Shevchenko
> Assignee: Oleksandr Shevchenko
> Priority: Minor
> Attachments: MAPREDUCE-7136.001.patch, image-2018-09-10-14-39-57-992.png
>
>
> TestMRAppMetrics should invoke shutdown method in DefaultMetricsSystem after completion. Since it can lead to failing other tests. For example, TestRMContainerAllocator#testReportedAppProgress fails when run after TestMRAppMetrics#testNames with the following error:
> {noformat}
> org.apache.hadoop.metrics2.MetricsException: Metrics source MRAppMetrics already exists!
> {noformat}
> !image-2018-09-10-14-39-57-992.png!
> We do not catch this on the trunk since the test TestRMContainerAllocator#testUnsupportedMapContainerRequirement run first and "DefaultMetricsSystem.shutdown();" invokes after completion. But since JUnit does not guarantee the order of the tests we should fix it.
> Also, this is affected by previous versions which run testReportedAppProgress first (I faced it on 2.7.0 version). And reproduced on the trunk.
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