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Posted to issues@ignite.apache.org by "Vyacheslav Koptilin (Jira)" <ji...@apache.org> on 2021/12/01 13:42:00 UTC
[jira] [Updated] (IGNITE-16020) Finalize algorithm of assignments updates
[ https://issues.apache.org/jira/browse/IGNITE-16020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vyacheslav Koptilin updated IGNITE-16020:
-----------------------------------------
Priority: Blocker (was: Major)
> Finalize algorithm of assignments updates
> -----------------------------------------
>
> Key: IGNITE-16020
> URL: https://issues.apache.org/jira/browse/IGNITE-16020
> Project: Ignite
> Issue Type: Task
> Reporter: Kirill Gusakov
> Priority: Blocker
> Labels: ignite-3
>
> Triggers for assignments recalculation:
> * Changes in baseline
> * Changes in numbers of replicas
> * Changes in numbers of table partitions
> For 1 phase of the rebalancing algorithm, we need to support the first 2.
>
> The algorithm must provide the way to:
> * Recalculate assignments for all partitions and update appropriate assignments keys in metastore
> * Start all needed new raft groups
> * Initiate changePeers process and handle failover scenarios for it
> * Stop all redundant raft groups, when change peers done
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