[jira] [Assigned] (IGNITE-21594) Storage profiles

["Kirill Gusakov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-21594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirill Gusakov reassigned IGNITE-21594:
---------------------------------------

    Assignee: Kirill Gusakov

> Storage profiles 
> -----------------
>
>                 Key: IGNITE-21594
>                 URL: https://issues.apache.org/jira/browse/IGNITE-21594
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Kirill Gusakov
>            Assignee: Kirill Gusakov
>            Priority: Major
>
> *Motivation*
> To implement the consistent behaviour for zone-based collocation https://issues.apache.org/jira/browse/IGNITE-19170 we need to introduce the new storage configuration approach. It must give us a guarantee, that all tables, which belong to the same zone, can be deployed on any nodes from this zone.
> To support these guarantees we introduced the new abstraction - storage profiles
> In general the main idea is the following:
>  - Each table has the 1 storage profile. If storage profile is not specified, the first storage profile from the zone's storage profiles list will be used.
>  - Each zone has the list of supported storage profiles.
>  - Each node provide the list of supported storage profiles.
>  - In addition to the usual zone filter, zone filters the nodes by the storage profiles list and ensure, that the nodes support the full list of zone storage profiles.
>  - Each node supports the 'default' storage profile. Default zone has the 'default' storage profile as well. So, out of the box, user can just create the tables in the default zone and know nothing about the storage profile routine.
> From the point of configuration view, node storage configurations will be changed in the following way:
> {code:java}
> rocksDb:
>     flushDelayMillis: 1000
>     regions:
>         lruRegion:
>             cache: lru
>             size: 256
>         clockRegion:
>             cache: clock
>             size: 512
> aipersist:
>     checkpoint:
>         checkpointDelayMillis: 100
>     regions:
>         segmentedRegion:
>             replacementMode: SEGMENTED_LRU
>         clockRegion:
>             replacementMode: CLOCK
> {code}
> to
> {code:java}
> storages:
>     engines:
>         aipersist:
>             checkpoint:
>                 checkpointDelayMillis: 100
>         rocksDb:
>             flushDelayMillis: 1000
>     profiles:
>         lru_rocks:
>             engine: rocksDb
>             cache: lru
>             size: 256
>         clock_rocks:
>             engine: rocksDb
>             cache: clock
>             size: 512 
>         segmented_aipersist:
>             engine: aipersist
>             replacementMode: SEGMENTED_LRU
>         clock_aipersist:
>             engine: aipersist
>             replacementMode: CLOCK
> {code}
> *Definition of node*
>  - Storage configuration structure reworked according to the feature design (please, look at the attached diagram to simplify the initial understanding of the result configuration structure).
>  - All legacy abstractions like ENGINE and DATAREGION params removed from the DDLs.
>  - The triad zone-table-node_configs is working as expected according to the storage profile design document.



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