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Hadoop, mail # user - Debugging mapper


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Re: Debugging mapper
Joey Echeverria 2011-09-15, 21:45
You might also want to look into MRUnit[1]. It lets you mock the
behavior of the framework to test your map and reduce classes in
isolation. Can't discover all bugs, but a useful tool and works nicely
with IDE debuggers.

-Joey

[1] http://incubator.apache.org/mrunit/

On Thu, Sep 15, 2011 at 3:51 PM, Frank Astier <[EMAIL PROTECTED]> wrote:
> Hi -
>
> I’m using IntelliJ and the WordCount example in Hadoop (which uses MiniMRCluster). Is it possible to set an IntelliJ debugger breakpoint straight into the map function of the mapper? - I’ve tried, but so far, the debugger does not stop at the breakpoint.
>
> Thanks!
>
> Frank
>

--
Joseph Echeverria
Cloudera, Inc.
443.305.9434