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https://issues.apache.org/jira/browse/HDFS-13746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16578711#comment-16578711
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Siyao Meng commented on HDFS-13746:
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[~templedf] Thanks for the comments!
1. gN.toString() won't print the serialized content of the string array.
Instead, it would just return a string representation of the object
(essentially invoking Object.toString()).
2. Okay. Changed from int to long for _*maxTrials*_ and _*trial*_.
3. Removed GenericTestUtils.setLogLevel(LOG, Level.DEBUG) from setUp().
I have uploaded patch v004. Thanks!
> 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, HDFS-13746.004.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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