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From Ted Yu <yuzhih...@gmail.com>
Subject Re: write performance degradation
Date Mon, 31 Jan 2011 09:05:55 GMT
Right now my bigger concern is the following:

java.io.IOException: All datanodes are bad. Aborting...
	at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2603)
	at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$1600(DFSClient.java:2139)
	at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2306)
2011-01-31 05:42:36,927 WARN org.apache.hadoop.mapred.TaskTracker:
Error running child
java.lang.RuntimeException: java.io.IOException: All datanodes are bad. Aborting...

hadoop-core-0.20-append-r1056497.jar is newer than the jar from cdh3b2.
Some user is using it but I haven't got it working on cdh3b2 installation.

On Sun, Jan 30, 2011 at 10:24 PM, tsuna <tsunanet@gmail.com> wrote:

> It could be useful to see the output of "vmstat 1" (let it run for at
> least 30 seconds while the problem is occurring and pastebin the
> result).  If the problem seems i/o related, the output of "iostat -xkd
> 1" can also help.
> --
> Benoit "tsuna" Sigoure
> Software Engineer @ www.StumbleUpon.com

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