[HADOOP-9349] Confusing output when running hadoop version from one hadoop installation when HADOOP_HOME points to another

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.2, 2.0.1-alpha
• Fix Version/s: 1.2.0, 2.1.0-beta
• Component/s: tools
• Hadoop Flags: Reviewed
• Assignee: Sandy Ryza
• Reporter: Sandy Ryza
• Created: 14/Sep/12 17:47
• Updated: 15/May/13 05:16
• Resolved: 01/Mar/13 01:24

Description

Hadoop version X is downloaded to ~/hadoop-x, and Hadoop version Y is downloaded to ~/hadoop-y. HADOOP_HOME is set to hadoop-x. A user running hadoop-y/bin/hadoop might expect to be running the hadoop-y jars, but, because of HADOOP_HOME, will actually be running hadoop-x jars.

"hadoop version" could help clear this up a little by reporting the current HADOOP_HOME.