[MAPREDUCE-3720] Command line listJobs should not visit each AM

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.1
• Component/s: client, mrv2
• Hadoop Flags: Incompatible change, Reviewed

Release Note

Changed bin/mapred job -list to not print job-specific information not available at RM.

Very minor incompatibility in cmd-line output, inevitable due to MRv2 architecture.

• Assignee: Vinod Kumar Vavilapalli
• Reporter: Vinod Kumar Vavilapalli
• Created: 24/Jan/12 22:54
• Updated: 05/Mar/12 02:49
• Resolved: 27/Jan/12 08:46

Description

When the RM has a large number of jobs, bin/mapred job -list takes a long time as it visits each AM to get information like num-maps, num-reduces etc.

We should move all per-AM information to bin/mapred job -status and keep the list just a list.

Issue Links

• duplicates: MAPREDUCE-3668 AccessControlException when running mapred job -list command