[jira] [Updated] (IGNITE-5068) Redesign GridDhtPartitionTopologyImpl.part2node map to store only diff from affinity assignment

["Alexey Goncharuk (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-5068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Goncharuk updated IGNITE-5068:
-------------------------------------
    Fix Version/s: 2.1

> Redesign GridDhtPartitionTopologyImpl.part2node map to store only diff from affinity assignment
> -----------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-5068
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5068
>             Project: Ignite
>          Issue Type: Improvement
>    Affects Versions: 2.0
>            Reporter: Ilya Lantukh
>            Assignee: Alexey Goncharuk
>              Labels: important
>             Fix For: 2.1
>
>
> This map can become very huge on large topologies, and rebuilding it on each update is also costly. Some beneficial changes were made in the scope of IGNITE-4626, but further improvement requires complete redesign.
> This map always stores affinity nodes + some additional "temporary owners". Those owners are only needed to complete rebalancing and they will evict partition when rebalancing is finished. It seems that storing only those non-affinity owners can greatly reduce memory required by this map (it will be empty on stable topology) and effort needed to keep it consistent with node2part.



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