[MAPREDUCE-1527] QueueManager should issue warning if mapred-queues.xml is skipped.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.21.0
• Assignee: Hong Tang
• Reporter: Hong Tang
• Created: 23/Feb/10 22:22
• Updated: 24/Aug/10 21:20
• Resolved: 05/Mar/10 08:34

Description

MAPREDUCE-861 added support for hierarchical queues and used a new file mapred-queues.xml to configure queues. But the QueueManager will silently skip the file if property "mapred.queue.names" is defined in Configuration. This tripped us when we are testing MAPREDUCE-1235 and copied configuration files from a Hadoop 0.20 cluster.

I suggest QueueManager issue a friendly warning if both of the following are true: (1) "mapred.queue.names" exists in Configuration; (2) "mapred-queues.xml" is found in the classpath.