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Posted to issues@ignite.apache.org by "Alexander Lapin (Jira)" <ji...@apache.org> on 2023/05/09 16:12:00 UTC

[jira] [Assigned] (IGNITE-19440) Move onUpdateReplicas and distributionZonesDataNodesListener from table manager to distribution zones

     [ https://issues.apache.org/jira/browse/IGNITE-19440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexander Lapin reassigned IGNITE-19440:
----------------------------------------

    Assignee: Alexander Lapin

> Move onUpdateReplicas and distributionZonesDataNodesListener from table manager to distribution zones
> -----------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-19440
>                 URL: https://issues.apache.org/jira/browse/IGNITE-19440
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Alexander Lapin
>            Assignee: Alexander Lapin
>            Priority: Major
>              Labels: ignite-3
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> h3. Motivation
> While reviewing https://issues.apache.org/jira/browse/IGNITE-18955 it became obvious that having zone specific details in TableManager#createDistributionZonesDataNodesListener and partial dataNodes emptiness check is a result of bad design and should be fixed ASAP. The core idea here is that instead of TableManager, distribution Zones should manage rebalance so that it's worth to move all corresponding listeners to an appropriate place. Unfortunately it's not that easy because some listeners are coupled with table logic too tight but aforementioned createDistributionZonesDataNodesListener and onUpdateReplicas not of that kind, they are easy to move and thus might be considered as good candidates to start with.
> Besides moving listeners that update pending assignments keys it's also worth to substitute baselineManager usage with dataNodes one in onUpdateReplicas in order to provide an ability to add filter appliance and dataNodes emptiness check there.
> h3. Definition of Done
>  * Both createDistributionZonesDataNodesListener and onUpdateReplicas are moved from TableManager to distribution zones.
>  * Within onUpdateReplicas baselineManager#nodes usage is substituted with dataNodes one in order apply filter and emptiness check.



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