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https://issues.apache.org/jira/browse/IGNITE-22795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Puchkovskiy updated IGNITE-22795:
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Description:
CMG majority may be lost forever. Without a majority, a Raft group (and CMG is
a Raft group) cannot function. We need a way to reconfigure such a CMG
forcefully. We need to take into consideration a possibility for the lost
majority to return after or duing the repair. Such a return should not cause
inconsistencies and other troubles.
This epic contains the core part of the repair functionality. Improvements are
in IGNITE-22880.
Link to
[IEP|https://cwiki.apache.org/confluence/display/IGNITE/IEP-128%3A+CMG+and+Metastorage+Disaster+Recovery]
was:
CMG majority may be lost forever. Without a majority, a Raft group (and CMG is
a Raft group) cannot function. We need a way to reconfigure such a CMG
forcefully. We need to take into consideration a possibility for the lost
majority to return after or duing the repair. Such a return should not cause
inconsistencies and other troubles.
This epic contains the core part of the repair functionality. Improvements are
in IGNITE-22880.
> CMG majority loss recovery
> --------------------------
>
> Key: IGNITE-22795
> URL: https://issues.apache.org/jira/browse/IGNITE-22795
> Project: Ignite
> Issue Type: Epic
> Reporter: Roman Puchkovskiy
> Priority: Major
> Labels: ignite-3
>
> CMG majority may be lost forever. Without a majority, a Raft group (and CMG
> is a Raft group) cannot function. We need a way to reconfigure such a CMG
> forcefully. We need to take into consideration a possibility for the lost
> majority to return after or duing the repair. Such a return should not cause
> inconsistencies and other troubles.
> This epic contains the core part of the repair functionality. Improvements
> are in IGNITE-22880.
> Link to
> [IEP|https://cwiki.apache.org/confluence/display/IGNITE/IEP-128%3A+CMG+and+Metastorage+Disaster+Recovery]
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