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https://issues.apache.org/jira/browse/HDFS-9410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000709#comment-15000709
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Xiao Chen commented on HDFS-9410:
---------------------------------
Thanks very much Walter for looking into this! Your comments makes sense, patch
002 attached reflexes them.
I think this fixes it for the {{TestDFSAdminWithHA}} class, and if we see
similar issue in other test classes we can file separate JIRAs to fix.
> TestDFSAdminWithHA#tearDown may throw NPE
> -----------------------------------------
>
> Key: HDFS-9410
> URL: https://issues.apache.org/jira/browse/HDFS-9410
> Project: Hadoop HDFS
> Issue Type: Test
> Components: HDFS
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Priority: Minor
> Attachments: HDFS-9410.001.patch, HDFS-9410.002.patch
>
>
> If for any reason {{setUpHaCluster}} fails before storing {{System.out}} and
> {{System.err}} as member variables {{originOut}} and {{originErr}}, then in
> {{tearDown}} {{System.out}} and {{System.err}} are set to null. This could
> cause all following tests to fail when calling {{flush}}.
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