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From: Pavel Gutin <pavelgutin@gmail.com>
Date: Thu, 9 Sep 2010 14:28:10 -0400
Message-ID: <AANLkTimL-XnApPGDYb1RkcmFB+TOmeNZxtk808VfK-XV@mail.gmail.com>
Subject: My mappers stop responding even though they reach 100%
To: common-user@hadoop.apache.org
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I've been having a problem for the past few weeks. I will kick off a
job that will have a bunch of map tasks. At some point in the job
(sometimes at 1%, sometimes at 40%) the mappers will start reporting
the following error "Task attempt_201009021455_0033_m_000000_0 failed
to report status for 600 seconds. Killing!" The mapper progress will
sit at 100%. Eventually, too many mappers fail, and the job fails.

I have added context.progress(); to the map method, based on some
reading that I've done, but it doesn't help.

I would appreciate any help you can provide me.

Thank you!