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From Jack Levin <magn...@gmail.com>
Subject Re: Question about dead datanode
Date Fri, 14 Feb 2014 16:19:30 GMT
0.20.2-cdh3u2 --

"add to deadNodes and continue" would solve this issue.  For some reason
its not getting into this code path.

If its a matter of adding a quick line of code to make this work, then we
would rather recompile with that and upgrade later when we have better
backup.

-Jack


On Thu, Feb 13, 2014 at 10:55 PM, Stack <stack@duboce.net> wrote:

> On Thu, Feb 13, 2014 at 9:18 PM, Jack Levin <magnito@gmail.com> wrote:
>
> > One other question, we get this:
> >
> > 2014-02-13 02:46:12,768 WARN org.apache.hadoop.hdfs.DFSClient: Failed to
> > connect to /10.101.5.5:50010 for file
> > /hbase/img32/b97657bfcbf922045d96315a4ada0782/att/4890606694307129591 for
> > block -9099107892773428976:java.net.SocketTimeoutException: 60000 millis
> > timeout while waiting for channel to be ready for connect. ch :
> > java.nio.channels.SocketChannel[connection-pending remote=/
> > 10.101.5.5:50010]
> >
> >
> > Why can't RS do this instead:
> >
> >
> hbase-root-regionserver-mtab5.prod.imageshack.com.log.2014-02-10:2014-02-10
> > 22:05:11,763 INFO org.apache.hadoop.hdfs.DFSClient: Failed to connect to
> /
> > 10.103.8.109:50010, add to deadNodes and continue
> >
> > "add to deadNodes and continue" specifically?
> >
>
>
> The regionserver runs on the HDFS API.  The implementations can vary.  The
> management of nodes -- their coming and going -- is done inside the HDFS
> client code.  The regionserver is insulated from all that goes on therein.
>
> What version of HDFS are you on Jack?
>
> St.Ack
>

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