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https://issues.apache.org/jira/browse/HDFS-9370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth resolved HDFS-9370.
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Resolution: Duplicate
> TestDataNodeUGIProvider fails intermittently due to non-deterministic cache
> expiry.
> -----------------------------------------------------------------------------------
>
> Key: HDFS-9370
> URL: https://issues.apache.org/jira/browse/HDFS-9370
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Minor
> Attachments: HDFS-9370.001.patch, HDFS-9370.002.patch
>
>
> {{TestDataNodeUGIProvider}} has hard-coded sleep times waiting for background
> expiration of entries in a Guava cache. I have seen this test suite fail
> intermittently, because expiration is not guaranteed to happen strictly on
> the boundary of the period defined by the cache's expiration time.
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