[HADOOP-8050] Deadlock in metrics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.204.0, 0.20.205.0, 1.0.0, 0.23.0
• Fix Version/s: 1.0.2, 0.23.2
• Component/s: metrics
• Assignee: Kihwal Lee
• Reporter: Kihwal Lee
• Created: 09/Feb/12 20:29
• Updated: 14/Nov/13 19:45
• Resolved: 22/Feb/12 16:13

Description

The metrics serving thread and the periodic snapshot thread can deadlock.
It happened a few times on one of namenodes we have. When it happens RPC works but the web ui and hftp stop working. I haven't look at the trunk too closely, but it might happen there too.

Issue Links

• is related to: HADOOP-10090 Jobtracker metrics not updated properly after execution of a mapreduce job