Ilya Lantukh created IGNITE-5068:
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Summary: Redesign usage of 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: Ilya Lantukh
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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