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Task failed to ping TT for 60 seconds

Question asked by jsumali on Apr 8, 2014
Latest reply on Apr 29, 2014 by jsumali
A lot of our mapreduce jobs are having tasks killed with message:

Task attempt_201404071618_0132_m_000000_0 failed to ping TT for 60 seconds. Killing!

Where can I start looking to diagnose this issue? What generally causes this to happen?

It's not making our jobs fail, but tasks are being failing and jobs are not finishing as quickly.