[
https://issues.apache.org/jira/browse/HDFS-4178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13500987#comment-13500987
]
Hudson commented on HDFS-4178:
------------------------------
Integrated in Hadoop-Yarn-trunk #42 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/42/])
HDFS-4178. Shell scripts should not close stderr (Andy Isaacson via daryn)
(Revision 1411229)
Result = SUCCESS
daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1411229
Files :
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/bin/start-dfs.sh
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/bin/stop-dfs.sh
> shell scripts should not close stderr
> -------------------------------------
>
> Key: HDFS-4178
> URL: https://issues.apache.org/jira/browse/HDFS-4178
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: scripts
> Affects Versions: 2.0.2-alpha
> Reporter: Andy Isaacson
> Assignee: Andy Isaacson
> Fix For: 3.0.0, 2.0.3-alpha
>
> Attachments: hdfs4178.txt
>
>
> The {{start-dfs.sh}} and {{stop-dfs.sh}} scripts close stderr for some
> subprocesses using the construct
> bq. {{2>&-}}
> This is dangerous because child processes started up under this scenario will
> re-use filedescriptor 2 for opened files. Since libc and many other
> codepaths assume that filedescriptor 2 can be written to in error conditions,
> this can potentially result in data corruption.
> Much better to redirect stderr using the construct {{2>/dev/null}}.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
