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https://issues.apache.org/jira/browse/IGNITE-8241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Denis Magda reassigned IGNITE-8241:
-----------------------------------
Assignee: Prachi Garg (was: Denis Magda)
> Docs: Triggering automatic rebalancing if the whole baseline topology is not
> recovered
> --------------------------------------------------------------------------------------
>
> Key: IGNITE-8241
> URL: https://issues.apache.org/jira/browse/IGNITE-8241
> Project: Ignite
> Issue Type: Task
> Components: documentation
> Affects Versions: 2.4
> Reporter: Denis Magda
> Assignee: Prachi Garg
> Priority: Critical
> Fix For: 2.5
>
> Attachments: BaselineWatcher.java
>
>
> The ticket is created as a result of the following discussion:
> http://apache-ignite-developers.2346864.n4.nabble.com/Triggering-rebalancing-on-timeout-or-manually-if-the-baseline-topology-is-not-reassembled-td29299.html
> The rebalancing doesn't happen if one of the nodes goes down,
> thus, shrinking the baseline topology. It complies with our assumption that
> the node should be recovered soon and there is no need to waste
> CPU/memory/networking resources of the cluster shifting the data around.
> However, there are always edge cases. I was reasonably asked how to trigger
> the rebalancing within the baseline topology manually or on timeout if:
> * It's not expected that the failed node would be resurrected in the
> nearest time and
> * It's not likely that that node will be replaced by the other one.
> Until we embedd special facilities in the baseline topology that would
> consider such situations we can document the following workaround. A user
> application/tool/script has to subscribe to node_left events and remove the
> failed node from the baseline topology in some time. Once the node is
> removed, the baseline topology will be changed, and the rebalancing will be
> kicked off.
>
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