[HDFS-4519] Support override of jsvc binary and log file locations when launching secure datanode.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0, 3.0.0-alpha1
• Fix Version/s: 1.2.0, 2.1.0-beta
• Component/s: datanode, scripts
• Target Version/s: 1.2.0, 2.1.0-beta
• Hadoop Flags: Reviewed

Release Note

With this improvement the following options are available in release 1.2.0 and later on 1.x release stream:
1. jsvc location can be overridden by setting environment variable JSVC_HOME. Defaults to jsvc binary packaged within the Hadoop distro.
2. jsvc log output is directed to the file defined by JSVC_OUTFILE. Defaults to $HADOOP_LOG_DIR/jsvc.out.
3. jsvc error output is directed to the file defined by JSVC_ERRFILE file. Defaults to $HADOOP_LOG_DIR/jsvc.err.

With this improvement the following options are available in release 2.0.4 and later on 2.x release stream:
1. jsvc log output is directed to the file defined by JSVC_OUTFILE. Defaults to $HADOOP_LOG_DIR/jsvc.out.
2. jsvc error output is directed to the file defined by JSVC_ERRFILE file. Defaults to $HADOOP_LOG_DIR/jsvc.err.

For overriding jsvc location on 2.x releases, here is the release notes from HDFS-2303:
To run secure Datanodes users must install jsvc for their platform and set JSVC_HOME to point to the location of jsvc in their environment.

• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 21/Feb/13 23:45
• Updated: 12/May/16 18:16
• Resolved: 05/Mar/13 22:53

Description

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.

Issue Links

• is required by: HDFS-2350 Secure DN doesn't print output to console when started interactively
• relates to: HDFS-2303 Unbundle jsvc