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https://issues.apache.org/jira/browse/HDFS-9410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15001488#comment-15001488
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Walter Su commented on HDFS-9410:
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I found 4 more places
{noformat}
TestFsShellPermission.java:100: System.setOut(out); // need try-finally
TestMetadataVersionOutput.java:75: System.setOut(stdOut);// need try-finally
TestSnapshotRename.java:240: System.setOut(psOut); //need restore
TestSnapshotDeletion.java:1047: System.setOut(psOut); //need restore
{noformat}
> 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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