Ivan Bessonov created IGNITE-13050:
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Summary: ClusterGroup that is recomputed on topology change
Key: IGNITE-13050
URL: https://issues.apache.org/jira/browse/IGNITE-13050
Project: Ignite
Issue Type: Improvement
Reporter: Ivan Bessonov
Assignee: Ivan Bessonov
Currently, ClusterGroup comes in two favors:
One is a static set of UUIDs which will not change, second is predicate that is
recomputed over ALL nodes on EVERY operation. This has bitten our client
because recomputing of ClusterGroup happens in tcp-communication thread
clogging it and delaying every operation in cluster. This is a major problem.
It would be nice if there was a ClusterGroup with predicate which would
recompute once per topology affinity change. Bonus points if it precisely
tracks current topology with zero delay or overrun.
Would be nice to upgrade firstNode/lastNode predicates to that mechanism since
now they are static - topology changes but firstNode/lastNode projections
don't, they may point to absent node.
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