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From "Rong-en Fan" <gra...@gmail.com>
Subject Re: Problem with HBase and HDFS
Date Mon, 19 Jan 2009 11:09:05 GMT
On Mon, Jan 19, 2009 at 5:55 PM, Michael Seibold <seibold@in.tum.de> wrote:
> Hi Gennady,
>
> Thanks for your response. Yes I looked into the log file of the region
> server and everything looks fine until I execute the command in the
> hbase shell. At this point the exception is shown in the hbase shell and
> also in the log file of the region server.
>
> The method getRegionName() in class ServerCallable throws an
> NullPointerException, because the call location.getRegionInfo() returns
> null. The questions is what's wrong in my setup to cause this.
>
> I compared the insatllation/configuration steps I did with the steps in
> your guide and the only difference that I can find is that you use Cent
> OS (I was using Ubuntu) and you disabled IPv6 (I didn't do that, as far
> as I remember that was not mentioned in th official install guides).
>
> Why did you disable IPv6? Is this a required step?

I guess it's because the interaction between jvm and ipv6, see

http://mail-archives.apache.org/mod_mbox/hadoop-core-user/200812.mbox/%3CC56ED656.C28C%25runping@yahoo-inc.com%3E

Hope this helps,
Rong-En Fan

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