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https://issues.apache.org/jira/browse/IGNITE-4273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov closed IGNITE-4273.
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> Hadoop: implement heap-based data structures.
> ---------------------------------------------
>
> Key: IGNITE-4273
> URL: https://issues.apache.org/jira/browse/IGNITE-4273
> Project: Ignite
> Issue Type: Task
> Components: hadoop
> Affects Versions: 1.8
> Reporter: Vladimir Ozerov
> Assignee: Vladimir Ozerov
> Labels: performance
> 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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