[HADOOP-10903] Enhance hadoop classpath command to expand wildcards or write classpath into jar manifest.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6.0
• Component/s: scripts, util
• Target Version/s: 2.6.0
• Hadoop Flags: Reviewed

Release Note

The "hadoop classpath" command has been enhanced to support options for automatic expansion of wildcards in classpath elements and writing the classpath to a jar file manifest. These options make it easier to construct a correct classpath for libhdfs applications.

• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 30/Jul/14 17:13
• Updated: 30/Jul/15 21:30
• Resolved: 03/Aug/14 05:17

Description

The "hadoop classpath" shell command currently prints the classpath variable established by the shell scripts and then exits. A few enhancements to this command would be desirable to support a few other use cases.

Issue Links

• is duplicated by: HADOOP-7779 bin/hadoop classpath CLI does not display the complete classpath
• is duplicated by: HDFS-4552 For Hadoop 2.0.3; setting CLASSPATH=$(hadoop classpath) does not work, as opposed to 1.x versions
• is related to: MAPREDUCE-3283 mapred classpath CLI does not display the complete classpath
• is related to: YARN-3015 yarn classpath command should support same options as hadoop classpath.
• is related to: HDFS-573 Porting libhdfs to Windows
• is related to: HDFS-7591 hdfs classpath command should support same options as hadoop classpath.