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Posted to issues@ignite.apache.org by "Kirill Gusakov (Jira)" <ji...@apache.org> on 2021/12/02 20:22:00 UTC

[jira] [Comment Edited] (IGNITE-15725) Need to define scenarios related to data rebalancing and identifies possible corner cases

    [ https://issues.apache.org/jira/browse/IGNITE-15725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17452587#comment-17452587 ] 

Kirill Gusakov edited comment on IGNITE-15725 at 12/2/21, 8:21 PM:
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As a first phase we decide to satisfy 2 cases:
 * Direct change on baseline topology https://issues.apache.org/jira/browse/IGNITE-16010
 * Change of replicas' number for the table https://issues.apache.org/jira/browse/IGNITE-15554

Partition changes must be addressed under https://issues.apache.org/jira/browse/IGNITE-16016 (it has some additional complexity, because cross-group raft rebalance  is involved).

Further details about algorithm details will be provided under https://issues.apache.org/jira/browse/IGNITE-16020 .


was (Author: kgusakov):
As a first phase we decide to satisfy 2 cases:
 * Direct change on baseline topology https://issues.apache.org/jira/browse/IGNITE-16010
 * Change of replicas' number for the table https://issues.apache.org/jira/browse/IGNITE-15554

Further details about algorithm details will be provided under https://issues.apache.org/jira/browse/IGNITE-16020 .

> Need to define scenarios related to data rebalancing and identifies possible corner cases
> -----------------------------------------------------------------------------------------
>
>                 Key: IGNITE-15725
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15725
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Vyacheslav Koptilin
>            Assignee: Kirill Gusakov
>            Priority: Major
>              Labels: ignite-3
>
> Need to define scenarios that may lead to data rebalancing. The obvious ones are joining nodes to the cluster and leaving it.
> Also, corner cases should be addressed. For example, how the cluster should behave when the replica factor is 1.



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