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From Ted Yu <yuzhih...@gmail.com>
Subject Re: 100% CPU utilization on idle HDFS Data Nodes
Date Tue, 03 Jun 2014 16:37:38 GMT
Can you pastebin data node log snippet and jstack of datanode process ?

Thanks


On Tue, Jun 3, 2014 at 9:34 AM, Shayan Pooya <shayan@liveve.org> wrote:

> I have a three node HDFS cluster with a name-node.  There is absolutely no
> IO going on this cluster or any jobs running on it and I just use it for
> testing the Disco HDFS integration.
> I noticed that two of the three data-nodes are using 100% CPU.  They have
> been running for a long time (2 months) but with no jobs running on them
> and almost no usage:
>
> $ hadoop version
> Hadoop 2.3.0
> Subversion http://svn.apache.org/repos/asf/hadoop/common -r 1567123
> Compiled by jenkins on 2014-02-11T13:40Z
> Compiled with protoc 2.5.0
> From source with checksum dfe46336fbc6a044bc124392ec06b85
>
> Is this a known bug?
>

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