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https://issues.apache.org/jira/browse/HDFS-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584863#comment-13584863
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Jos Backus commented on HDFS-4519:
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Sorry, Chris, didn't mean to derail this ticket. I like what you propose
regarding fixing/extending the jsvc support, so +1 from me :)
I will file a different ticket for my enhancement suggestion (just like I did
internally when the issue came up). Briefly, my suggestion was to merge the
jsvc-run class code into the main datanode class, and use JNI to call setuid()
to drop privileges after allocating the privilege-requiring resources (see
http://www2.sys-con.com/itsg/virtualcd/java/archives/0510/Silverman/index.html
for details how this can be done).
> Support override of jsvc binary and log file locations when launching secure
> datanode.
> --------------------------------------------------------------------------------------
>
> Key: HDFS-4519
> URL: https://issues.apache.org/jira/browse/HDFS-4519
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, scripts
> Affects Versions: 1.2.0
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-4519-branch-1.1.patch
>
>
> Currently, builds based on branch-1 bundle a specific version of jsvc
> pre-built for Linux, and the startup scripts hard-code the location of the
> output and error files. Some deployments may prefer to upgrade to a
> different version of jsvc, independent of the version bundled in Hadoop, and
> redirect its output elsewhere.
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