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From James Ram <hadoo...@gmail.com>
Subject Re: the new adding datanode can't use hadoop-daemon.sh start datanode to start, return a NPE
Date Thu, 17 Feb 2011 04:13:18 GMT

Try formating the new datanode and then run the hadoop-daemon.sh.

With Regards,

On Wed, Feb 16, 2011 at 3:50 PM, Jameson Li <hovlj.ei@gmail.com> wrote:

> Hi,
> My new adding datanodes are working well.
> But I just use start-dfs.sh in the namenode and hadoop-daemons.sh start
> datanode in the namenode can start the new adding datanode, I can't use
> hadoop-daemon.sh start datanode in the new adding datanode to start itself,
> and when I do that it will return a null pointer exception.
> I have read the mail-archives "New Datanode won't start, null pointer
> exception" reported by Scott, and the url is:
> http://www.mail-archive.com/hdfs-user@hadoop.apache.org/msg00271.html
> But there has not have a really result. Scott at last just said:"A
> stop-all/*start*-all on the cluster got it to *start*."
> Thanks,
> Jameson.

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