Alexey Goncharuk created IGNITE-5578:
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Summary: Discovery events coalescing
Key: IGNITE-5578
URL: https://issues.apache.org/jira/browse/IGNITE-5578
Project: Ignite
Issue Type: Improvement
Components: cache, general
Affects Versions: 1.0
Reporter: Alexey Goncharuk
Fix For: 2.1
There is an issue that has been in Ignite long ago and with the growing
community and growing cluster sizes, it becomes more tangible.
When a bunch of nodes leave or join cluster, we generate a separate discovery
event for each node, and each discovery event generates a partition map
exchange.
The first idea that came to my mind was to coalesce the partition map
exchanges, but this is extremely difficult to implement on unstable topology.
Instead, we can introduce NODES_JOINED / NODES_FAILED events and batch multiple
events on discovery level when possible. In this case, very few extra partition
map exchanges are possible.
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