[jira] [Created] (IGNITE-4273) Hadoop: implement head-based data structures.

[Anton Vinogradov (Jira)]

Vladimir Ozerov created IGNITE-4273:
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             Summary: Hadoop: implement head-based data structures.
                 Key: IGNITE-4273
                 URL: https://issues.apache.org/jira/browse/IGNITE-4273
             Project: Ignite
          Issue Type: Sub-task
          Components: hadoop
    Affects Versions: 1.8
            Reporter: Vladimir Ozerov
            Assignee: Vladimir Ozerov
             Fix For: 2.0


We store output offheap what causes a lot of offheap <-> heap transitions. Also it doesn't allow is to use raw comparator.

Let's add new data structures which utilize heap arrays.



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