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https://issues.apache.org/jira/browse/IGNITE-8571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16771723#comment-16771723
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Dmitriy Govorukhin commented on IGNITE-8571:
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[~akalashnikov], [~ibessonov] Many thanks, LGTM, merged to master.
> Baseline auto-adjust feature
> ----------------------------
>
> Key: IGNITE-8571
> URL: https://issues.apache.org/jira/browse/IGNITE-8571
> Project: Ignite
> Issue Type: New Feature
> Reporter: Eduard Shangareev
> Assignee: Anton Kalashnikov
> Priority: Major
> Labels: IEP-4, Phase-2
> Fix For: 2.8
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Now we have only one way to change BLAT - manually update it via console.sh
> or API.
> We need to add the possibility to change it automatically. Adjust to current
> topology.
> So, I propose 2 new distributed parameters which would be responsible to tune
> this feature.
> 1. Flag autoAdjustEnabled - true/false. Easy. Manual baseline control or auto
> adjusting baseline.
> 2. autoAdjustTimeout - time which we would wait after the actual topology
> change. But it would be reset if new discovery event happened. (node
> join/exit).
> We need to change API next way:
> org.apache.ignite.IgniteCluster:
> * isBaselineAutoAdjustEnabled()
> * setBaselineAutoAdjustEnabled(boolean enabled);
> * setBaselineAutoAdjustTimeout(long timeoutInMs);
> Also, we need to ensure that all nodes would have the same
> parameters(distributed parameters).
> And we should be able to survive coordinator left during parameters changes.
> When autoAdjustEnabled is true we should be block ability to manual baseline
> change.
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