[jira] [Assigned] (IGNITE-19505) Design distribution zone based partition replication

["Vyacheslav Koptilin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-19505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vyacheslav Koptilin reassigned IGNITE-19505:
--------------------------------------------

    Assignee: Kirill Gusakov

> Design distribution zone based partition replication
> ----------------------------------------------------
>
>                 Key: IGNITE-19505
>                 URL: https://issues.apache.org/jira/browse/IGNITE-19505
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Kirill Gusakov
>            Assignee: Kirill Gusakov
>            Priority: Major
>
> *Motivation*
> The current data layout is builded around the table partitions. Each table partition forms the group of replicas with the RAFT protocol (pluggable protocol in future). This layout was great up to the moment, when we decided to introduce the support of collocation for any chosen group of tables.
> After some rounds of discussions we decided to use the distribution zone as the scope of collocation. So, the partition will be managed by the distribution zone associated entity, instead of the table one.
> *Definition of done* 
> Under this issue we need to provide the design document, which will describe the process for migration the current state to the:
> - Table partitions must be the part (one-to-one relation) of the zone partition.
> - The data layout for partitions of different tables inside the one zone partition - must be described as well. 
> - Tables, which share the one distribution zone will be collocated (the same key must be stored in the same distribution zone partition)



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