Roman Puchkovskiy created IGNITE-22379:
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Summary: Support Metastorage group reconfiguration
Key: IGNITE-22379
URL: https://issues.apache.org/jira/browse/IGNITE-22379
Project: Ignite
Issue Type: Improvement
Reporter: Roman Puchkovskiy
The user should be able to change the Raft configuration (that is, the nodes
hosting the voting members) of the CMG.
CLI should have 'cmg reconfigure <new-cmg-nodes>' command for doing so. REST
should mirror it.
When reconfiguration is requested, we do changePeers() on the group.
Currently, each node of the cluster hosts either CMG peer or CMG learner. When
a node sees that CMG configuration gets changed, it should convert peer to
learner (or do the reverse) if it's affected by the change.
cmgNodes in the CMG need to be changed as well.
Might need some design.
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