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https://issues.apache.org/jira/browse/IGNITE-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15955671#comment-15955671
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Alexei Scherbakov commented on IGNITE-4554:
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Completed compressed bitset implementation based on roaring bitmaps [1]
Next is to replace Set<Integer> with new data structure and measure heap
usage/perfomance.
[1] http://roaringbitmap.org/
> Optimize integer sets.
> ----------------------
>
> Key: IGNITE-4554
> URL: https://issues.apache.org/jira/browse/IGNITE-4554
> Project: Ignite
> Issue Type: Improvement
> Components: general
> Affects Versions: 1.6
> Reporter: Alexei Scherbakov
> Assignee: Alexei Scherbakov
> Fix For: 2.1
>
>
> Ignite has many uses of data structures like Set<Integer>, IntArray etc.
> This is not most efficient way to represent integer sets. The best way is to
> use compressed bit sets. This should save a lot of heap space.
> We should optimize integer sets whenever possible.
> The most obvious place to start is GridAffinityAssignment.
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