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From "Ivan Veselovsky (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-4097) Spilled map-reduce: map side.
Date Wed, 19 Oct 2016 15:53:58 GMT
Ivan Veselovsky created IGNITE-4097:
---------------------------------------

             Summary: Spilled map-reduce: map side.
                 Key: IGNITE-4097
                 URL: https://issues.apache.org/jira/browse/IGNITE-4097
             Project: Ignite
          Issue Type: Sub-task
          Components: hadoop
    Affects Versions: 1.6
            Reporter: Ivan Veselovsky
            Assignee: Ivan Veselovsky
             Fix For: 1.8


Implement spilled output on Map side of map-reduce.

In general, algorithm should follow the one used in Hadoop. The difference on the Map side
is that 
1) we use sorting collection (Hadoop sorts a range of map outputs explicitly);
2) we store the map output in files not using FileSystem , but rather local files.



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