Kirill Gusakov created IGNITE-18284:
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Summary: Prepare design for RebalanceScheduler role scope and
election
Key: IGNITE-18284
URL: https://issues.apache.org/jira/browse/IGNITE-18284
Project: Ignite
Issue Type: Task
Reporter: Kirill Gusakov
According to the document attached in IGNITE-18060 we need to assign a separate
role, let's call it RebalanceScheduler. Under this issue we need to clarify:
* Which scope should we use for this role: cluster/table/partition-wide?
Depending on the answer to this question we can collocate this component with
placement driver/primary replica/partition group RAFT laeder/CMG leader/leader
of metastorage group
* How will we guerantee, that only one scheduler per scope exists at the any
moment? Also, we must guerantee that there are no any stale operations from
previous scheduler overlap with the current one (by leasing techniques or
alternatives)
* How we will reelect the new one, when current died.
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