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https://issues.apache.org/jira/browse/IGNITE-5398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov resolved IGNITE-5398.
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Resolution: Fixed
> Optimize allocations in RendezvousAffinityFunction
> --------------------------------------------------
>
> Key: IGNITE-5398
> URL: https://issues.apache.org/jira/browse/IGNITE-5398
> Project: Ignite
> Issue Type: Improvement
> Components: cache
> Affects Versions: 2.0
> Reporter: Alexey Goncharuk
> Assignee: Alexey Goncharuk
> Fix For: 2.1
>
>
> Currently {{RendezvousAffinityFunction}} allocates a new array of tuples
> (Long, ClusterNode) in order to create a sorted structure for the partition
> assignment. This structure is allocated for each cache and each partition,
> which leads to excessive GC pressure during partition map exchange.
> I suggest we create a special container which is allocated once per context
> and reused for all partition assignments. This container can be reused
> efficiently for all caches because it's size is equal to the number of nodes
> in the assignment.
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