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Posted to dev@mahout.apache.org by "Mike Percy (JIRA)" <ji...@apache.org> on 2013/09/17 04:36:52 UTC

[jira] [Created] (MAHOUT-1335) MultithreadedSharingMapper fails on Hadoop 2

Mike Percy created MAHOUT-1335:
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             Summary: MultithreadedSharingMapper fails on Hadoop 2
                 Key: MAHOUT-1335
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1335
             Project: Mahout
          Issue Type: Bug
          Components: Collaborative Filtering
    Affects Versions: 0.8
            Reporter: Mike Percy
             Fix For: 0.9


Between Hadoop 1 and 2, the string value of the Configuration option that stores the mapper classname in MultithreadedMapper changed from "mapred.map.multithreadedrunner.class" to "mapreduce.mapper.multithreadedmapper.mapclass".

Since there is a stable API (getMapperClass()) that abstracts these differences away, we should use that instead.

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