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https://issues.apache.org/jira/browse/HDFS-9410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003673#comment-15003673
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Hudson commented on HDFS-9410:
------------------------------
FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #676 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/676/])
HDFS-9410. Some tests should always reset sysout and syserr. Contributed
(waltersu4549: rev cccf88480b0df71f15fb36e9693d492c9e16c685)
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestMetadataVersionOutput.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDeletion.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestClusterId.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFsShellPermission.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tracing/TestTraceAdmin.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestTools.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSShell.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotRename.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestJMXGet.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSAdminWithHA.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestQuota.java
> Some tests should always reset sysout and syserr
> ------------------------------------------------
>
> 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
> Fix For: 2.8.0
>
> Attachments: HDFS-9410.001.patch, HDFS-9410.002.patch,
> HDFS-9410.003.patch
>
>
> Originally found in {{TestDFSAdminWithHA#tearDown}} where System.out.flush()
> throws an NPE.
> The cause is that 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}}.
> This jira tries to fix all similar occurrences of this issue
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