[MAPREDUCE-4328] Add the option to quiesce the JobTracker

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.3
• Fix Version/s: 1.1.0
• Component/s: mrv1
• Assignee: Arun Murthy
• Reporter: Arun Murthy
• Created: 08/Jun/12 07:19
• Updated: 17/Oct/12 18:27
• Resolved: 27/Aug/12 15:35

Description

In several failure scenarios it would be very handy to have an option to quiesce the JobTracker.

Recently, we saw a case where the NameNode had to be rebooted at a customer due to a random hardware failure - in such a case it would have been nice to not lose jobs by quiescing the JobTracker.

Issue Links

• relates to: HDFS-3518 Provide API to check HDFS operational state