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Posted to common-user@hadoop.apache.org by Peter Thygesen <th...@infopaq.dk> on 2007/12/05 10:14:52 UTC
MultithreadedMapRunner
Can anyone provide me with a java code sample of how I can use the
MultithreadedMapRunner
<http://lucene.apache.org/hadoop/api/org/apache/hadoop/mapred/lib/Multit
hreadedMapRunner.html> ? Or at least some hints?
Please.
Thx.
Peter
Re: MultithreadedMapRunner
Posted by Alejandro Abdelnur <tu...@gmail.com>.
On the JobConf use the setMapRunnerClass() method to set the multithreaded
map runner and set the mapred.map.multithreadedrunner.threads property with
the number of threads you want it to use.
That would do.
And make sure your map() code is thread safe.
A
On Dec 5, 2007 2:44 PM, Peter Thygesen <th...@infopaq.dk> wrote:
> Can anyone provide me with a java code sample of how I can use the
> MultithreadedMapRunner
> <http://lucene.apache.org/hadoop/api/org/apache/hadoop/mapred/lib/Multit
> hreadedMapRunner.html> ? Or at least some hints?
>
> Please.
>
>
>
> Thx.
>
> Peter
>
>