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From gabriele renzi <rff....@gmail.com>
Subject Re: timeout while running simple hadoop job
Date Fri, 07 May 2010 13:53:07 GMT
On Fri, May 7, 2010 at 2:44 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> Sounds like you need to configure Hadoop to not create a whole bunch
> of Map tasks at once

interesting, from a  quick check it seems there are a dozen threads running.
Yet , setNumMapTasks seems to be deprecated (together with JobConf)
and while I guess
   -Dmapred.map.tasks=N
may still work, it seems that  so it seems the only way to manage the
number of map tasks is via a custom subclass of
ColumnFamilyInputFormat.

But of course you have a point that in a single box this does not add anything.

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