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From Apache Wiki <>
Subject [Cassandra Wiki] Update of "HadoopSupport" by jeremyhanna
Date Wed, 13 Jul 2011 18:17:50 GMT
Dear Wiki user,

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The "HadoopSupport" page has been changed by jeremyhanna:

Updated the Streaming section.

  As of 0.7, there is a basic mechanism included in Cassandra for outputting data to Cassandra.
 The `contrib/word_count` example in 0.7 contains two reducers - one for outputting data to
the filesystem and one to output data to Cassandra (default) using this new mechanism.  See
that example in the latest release for details.
  ==== Hadoop Streaming ====
- As of 0.7, there is support for [[|Hadoop
Streaming]].  For examples on how to use Streaming with Cassandra, see the contrib section
of the Cassandra source.  The relevant tickets are [[|CASSANDRA-1368]]
and [[|CASSANDRA-1497]].
+ Hadoop output streaming was introduced in 0.7 but was removed from 0.8 due to lack of interest
and the additional complexity it added to the Hadoop integration code.  To use output streaming
with 0.7.x, see the contrib directory of the source download of Cassandra.

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