[jira] [Updated] (IGNITE-18755) Empty data nodes list of a distribution zone.

["Mirza Aliev (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-18755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mirza Aliev updated IGNITE-18755:
---------------------------------
    Labels: dzm-reviewed ignite-3 tech-debt  (was: ignite-3 tech-debt)

> Empty data nodes list of a distribution zone.
> ---------------------------------------------
>
>                 Key: IGNITE-18755
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18755
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Sergey Uttsel
>            Assignee: Sergey Uttsel
>            Priority: Major
>              Labels: dzm-reviewed, ignite-3, tech-debt
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> h3. Motivation
> In some cases list of data nodes for the distribution zone can be empty. For example when scale down timer is expired and removed all data nodes. It can leads to the data loss.
> We need a proper solution to this problem as part of the improvement of the rebalance. But for now, we need to make a temp solution to this problem and not change the list of data nodes if this will lead to the empty list.
> h3. Definition of Done
> DistributionZoneManager doesn't save the list of data nodes to meta storage if it is empty.



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