Yakov Zhdanov created IGNITE-5385:
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Summary: Get rid of discovery custom message on exchange completion
Key: IGNITE-5385
URL: https://issues.apache.org/jira/browse/IGNITE-5385
Project: Ignite
Issue Type: Improvement
Components: cache
Affects Versions: 2.0
Reporter: Yakov Zhdanov
Assignee: Yakov Zhdanov
Priority: Blocker
Fix For: 2.1
Currently if late affinity assignment is on we send full partition map as a
custom message to make sure all nodes get it. With greater number of nodes and
caches this can cause significant slowdowns.
We suggest to move sending to communication. In this case scenario with
coordinator failure requires special handling, since in this case some nodes
may receive full map, complete exchange and proceed with cache operations,
while others may not received full map yet. In this case full map should be
resend from new coordinator - it should be recalculated if none has received
one from former coordinator or should be requested from one of the lucky
receivers to get forwarded to other nodes.
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