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https://issues.apache.org/jira/browse/YARN-8944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16666601#comment-16666601
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Wilfred Spiegelenburg commented on YARN-8944:
---------------------------------------------
The two new failures in this junit test are caused by HADOOP-15864. It changes
the return value of the {{SecurityUtil.buildTokenService}}.
I have added a comment in that jira as it has far wider implications to the
YARN and MR code base.
> TestContainerAllocation.testUserLimitAllocationMultipleContainers failure
> after YARN-8896
> -----------------------------------------------------------------------------------------
>
> Key: YARN-8944
> URL: https://issues.apache.org/jira/browse/YARN-8944
> Project: Hadoop YARN
> Issue Type: Test
> Components: capacity scheduler
> Affects Versions: 3.1.2, 3.2.1
> Reporter: Wilfred Spiegelenburg
> Assignee: Wilfred Spiegelenburg
> Priority: Major
> Attachments: YARN-8944.001.patch
>
>
> YARN-8896 changes the behaviour of the CapacityScheduler by limiting the
> number of containers that can be allocated in one heartbeat. It is an
> undocumented change in behaviour.
> The change breaks the junit test:
> {{TestContainerAllocation.testUserLimitAllocationMultipleContainers}}
> The maximum number of containers that gets assigned via the on heartbeat is
> 100 and it expects 199 to be assigned.
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