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https://issues.apache.org/jira/browse/HDFS-5543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13829222#comment-13829222
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Andrew Wang commented on HDFS-5543:
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+1 pending jenkins
> fix narrow race condition in TestPathBasedCacheRequests
> -------------------------------------------------------
>
> Key: HDFS-5543
> URL: https://issues.apache.org/jira/browse/HDFS-5543
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: test
> Affects Versions: 3.0.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-5543.001.patch, HDFS-5543.002.patch
>
>
> TestPathBasedCacheRequests has a narrow race condition in
> testWaitForCachedReplicasInDirectory where an assert checking the number of
> bytes cached may fail. The reason is because waitForCachedBlock looks at the
> NameNode data structures directly to see how many replicas are cached, but
> the scanner asynchronously updates the cache entries with this information.
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