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https://issues.apache.org/jira/browse/HDFS-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583687#comment-13583687
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Chris Nauroth commented on HDFS-4519:
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trunk already has the capability to set the JSVC_HOME environment variable to
point at the operator's preferred version of jsvc. Part of this change will
back-port support for the JSVC_HOME environment variable to branch-1. Unlike
trunk, we will maintain the behavior of defaulting to Hadoop's bundled version
of jsvc for backwards-compatibility if JSVC_HOME is not specified.
Additionally, we will introduce JSVC_OUTFILE and JSVC_ERRFILE for redirecting
the output and error streams of jsvc.
One specific usage of this is to allow use of a new feature added in recent
jsvc versions to redirect outfile and errfile to stdout and stderr via the
special arguments '&1' and '&2' respectively. This feature is not supported in
the current version bundled in Hadoop, and commons-daemon has stopped providing
pre-built binary distributions, so we cannot upgrade the bundled version.
> 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
>
> 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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