Ivan Veselovsky created IGNITE-4097:
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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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