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From Tao You <nwpu...@gmail.com>
Subject Problem to deploy hadoop in ec2
Date Mon, 13 Sep 2010 15:36:22 GMT
We deployed Hadoop on several datacenters in EC2. We configed
mapred.job.tracker, fs.default.name and slaves by
external hostname(DNS)s. We can start the hadoop service, but the
inter-communication among mapers and reducers
didnot work. When we did wordcount, error occured as following.
"INFO mapred.JobClient: Task Id :
attempt_201009121539_0002_m_000003_1, Status : FAILED
Too many fetch-failures
WARN mapred.JobClient: Error reading task
Is there a way to fix this problem?
Tao You

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