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Posted to mapreduce-user@hadoop.apache.org by Pedro Costa <ps...@gmail.com> on 2011/05/02 12:09:00 UTC
Where are map and reduce functions from the Gridmix2 examples
Hi,
1 - I'm looking for the map and reduce functions of the several
examples of the Gridmix2 platform (Webdatasort, Webdatascan,
Monsterquery, javasort and combiner) and I can't find it? Where can I
find these functions?
2 - Does anyone know what the Webdatasort, Webdatascan, Monsterquery,
javasort and combiner examples from the Gridmix2 does?
Thanks,
RE: Where are map and reduce functions from the Gridmix2 examples
Posted by st...@emc.com.
I was just reading the gridmix2 code, happy to find that I can answer this question:
For javasort, I see these two lines of code:
jobConf.setMapperClass(IdentityMapper.class);
jobConf.setReducerClass(IdentityReducer.class);
for Monsterquery, webdatascan, webdatasort:
job.setMapperClass(SampleMapper.class);
job.setReducerClass(SampleReducer.class);
For combiner,
conf.setMapperClass(MapClass.class);
conf.setCombinerClass(Reduce.class);
conf.setReducerClass(Reduce.class);
seems that they have done nothing...
can anyone further explain that?
Thanks,
stanley
-----Original Message-----
From: Pedro Costa [mailto:psdc1978@gmail.com]
Sent: 2011年5月2日 18:09
To: mapreduce-user
Subject: Where are map and reduce functions from the Gridmix2 examples
Hi,
1 - I'm looking for the map and reduce functions of the several
examples of the Gridmix2 platform (Webdatasort, Webdatascan,
Monsterquery, javasort and combiner) and I can't find it? Where can I
find these functions?
2 - Does anyone know what the Webdatasort, Webdatascan, Monsterquery,
javasort and combiner examples from the Gridmix2 does?
Thanks,