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https://issues.apache.org/jira/browse/HDFS-6062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-6062:
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Affects Version/s: 2.4.0
Status: Patch Available (was: Open)
> TestRetryCacheWithHA#testConcat is flaky
> ----------------------------------------
>
> Key: HDFS-6062
> URL: https://issues.apache.org/jira/browse/HDFS-6062
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.4.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Priority: Minor
> Attachments: HDFS-6062.000.patch
>
>
> After adding retry cache metrics check, TestRetryCacheWithHA#testConcat can
> fail (https://builds.apache.org/job/PreCommit-HDFS-Build/6313//testReport/).
> The reason is that the test uses "dfs.exists(targetPath)" to check whether
> concat has been done in the original active NN. However, since we create the
> target file in the beginning, the check always returns true. Thus it is
> possible that the concat is processed in the new active NN for the first
> time. And in this case the retry cache will not be hit.
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