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https://issues.apache.org/jira/browse/HDFS-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13450672#comment-13450672
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Vlad Rozov commented on HDFS-3892:
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One of the tests that instantiate a second instance of MiniDFSCluster
invalidating storage directory for the first one is TestHDFSTrash. This test
succeed only if testTrash() runs before testTrashEnabledClientSide()or
testTrashEnabledServerSide(). I'll file a separate bug once I fix this one.
Please assign HDFS-3892 to me.
> Few static methods of MiniDFSCluster class incorrectly assume that it is a
> singleton
> ------------------------------------------------------------------------------------
>
> Key: HDFS-3892
> URL: https://issues.apache.org/jira/browse/HDFS-3892
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.0.0-alpha
> Reporter: Vlad Rozov
> Priority: Minor
>
> MiniDFSCluster class declares few methods including getBlockFile() and
> getStorageDirPath() as static while MiniDFSCluster is not a singleton and
> allows multiple instances. There are several unit tests that create and start
> more than one MiniDFSCluster at the same time.
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