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https://issues.apache.org/jira/browse/RATIS-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yaolong Liu updated RATIS-1594:
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Description:
Support ADD mode to setConfiguration: we only add members to the new member
list that are temporarily not in the current list, and do not delete existing
members.
Suppose there are now three members A B C in the cluster,
D called setConfiguration(newPeers=[A, B, C, D])
E called setConfiguration(newPeers=[A, B, C, E])
In the current code logic, the cluster members will end up being A, B, C, D or
A, B, C, E.
In ADD mode:
We assume that E's request is executed successfully first, and the current
members of the cluster are A, B, C, E, and then start to execute D's request.
At this time, we find that D is not in the list, so we just add D instead of
deleting E. The clusters eventually become A, B, C, D, E
In addition, we can hand over to the user whether to use concurrent mode to
execute setConfiguration.
> Support ADD mode to SetConfiguration
> ------------------------------------
>
> Key: RATIS-1594
> URL: https://issues.apache.org/jira/browse/RATIS-1594
> Project: Ratis
> Issue Type: Sub-task
> Components: server
> Reporter: Yaolong Liu
> Assignee: Yaolong Liu
> Priority: Major
>
> Support ADD mode to setConfiguration: we only add members to the new member
> list that are temporarily not in the current list, and do not delete existing
> members.
> Suppose there are now three members A B C in the cluster,
> D called setConfiguration(newPeers=[A, B, C, D])
> E called setConfiguration(newPeers=[A, B, C, E])
> In the current code logic, the cluster members will end up being A, B, C, D
> or A, B, C, E.
> In ADD mode:
> We assume that E's request is executed successfully first, and the current
> members of the cluster are A, B, C, E, and then start to execute D's request.
> At this time, we find that D is not in the list, so we just add D instead of
> deleting E. The clusters eventually become A, B, C, D, E
> In addition, we can hand over to the user whether to use concurrent mode to
> execute setConfiguration.
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