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From Peter Marron <>
Subject RE: Creating Indexes
Date Fri, 02 Nov 2012 08:44:07 GMT
Hi Dean,

I'm running everything on a single physical machine in pseudo-distributed mode.

Well it certainly looks like the reducer is looking for a derby.jar, although I must
confess I don't really understand why it would be doing that.
In an effort to fix that I copied the derby.jar (derby- into the
Hadoop directory, where I assume that the reducer would be able to find it.
However I get exactly the same problem as before.
Is there some particular place that I should put the derby.jar to make this
problem go away? Is there anything else that I can try?

Peter Marron

From: Dean Wampler []
Sent: 01 November 2012 13:02
Subject: Re: Creating Indexes

It looks like you're using Derby with a real cluster, not just a single machine in local or
pseudo-distributed mode. I haven't tried this myself, but the derby jar is probably not on
the machine that ran the reducer task that failed.

On Thu, Nov 1, 2012 at 4:31 AM, Peter Marron <<>>
Hi Shreepadma,

I agree that the error looks odd. However I can't believe that I would have
got this far with Hive if there was no derby jar. Nevertheless I checked.
Here is a directory listing of the Hive install:

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