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From "Dieter Plaetinck (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7213) document multiple keys per reducer oddity in hadoop streaming FAQ
Date Wed, 30 Mar 2011 07:54:05 GMT
document multiple keys per reducer oddity in hadoop streaming FAQ
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                 Key: HADOOP-7213
                 URL: https://issues.apache.org/jira/browse/HADOOP-7213
             Project: Hadoop Common
          Issue Type: Improvement
          Components: documentation
            Reporter: Dieter Plaetinck
            Priority: Minor


Hi,
for a newcomer to hadoop streaming, it comes as a surprise that the reducer receives arbitrary
keys, unlike the "real" hadoop where a reducer works on a single key.
An explanation for this is @ http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201103.mbox/browser

I suggest to add this to the FAQ of hadoop streaming

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