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Posted to issues@ignite.apache.org by "Vladimir Ozerov (JIRA)" <ji...@apache.org> on 2016/12/13 10:18:00 UTC

[jira] [Assigned] (IGNITE-4097) Spilled map-reduce: map side.

     [ https://issues.apache.org/jira/browse/IGNITE-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Ozerov reassigned IGNITE-4097:
---------------------------------------

    Assignee: Vladimir Ozerov  (was: Ivan Veselovsky)

> 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: Vladimir Ozerov
>
> 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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