java - HADOOP: emitting a Matrix from a mapper -

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hi new hadoop map reduce, wanted know there outputformat type can allow me emit matrix(2d array) directly mapper (without converting 1d). need urgently since have include in btech project

take at: http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/io/twodarraywritable.html guess that's need.


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