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https://issues.apache.org/jira/browse/HDFS-13746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576963#comment-16576963
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Daniel Templeton commented on HDFS-13746:
-----------------------------------------
Thanks for the update. More comments:
* I should have caught this the first time around: what's up with the
{{gN.toArray(str_groups)}} calls? {{str_groups}} is only used for printing.
Why not call {{gN.toString()}} instead?
* The max trials calculation might be simpler if you keep it as a long. No
real need to convert to an int the way you're using it.
* Is it useful to set the log level to DEBUG in the setup? It prevents the
user from controlling the log level declaratively.
> Still occasional "Should be different group" failure in
> TestRefreshUserMappings#testGroupMappingRefresh
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-13746
> URL: https://issues.apache.org/jira/browse/HDFS-13746
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
> Attachments: HDFS-13746.001.patch, HDFS-13746.002.patch,
> HDFS-13746.003.patch
>
>
> In https://issues.apache.org/jira/browse/HDFS-13723, increasing the amount of
> time in sleep() helps but the problem still appears, which is annoying.
>
> Solution:
> Use a loop to allow the test case to fail maxTrials times before declaring
> failure. Wait 50 ms between each retry.
>
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