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Posted to issues@ignite.apache.org by "Aleksandr Polovtcev (Jira)" <ji...@apache.org> on 2023/02/07 08:36:00 UTC

[jira] [Updated] (IGNITE-18394) Metastorage learners support

     [ https://issues.apache.org/jira/browse/IGNITE-18394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksandr Polovtcev updated IGNITE-18394:
-----------------------------------------
    Description: 
We want to use the learner mechanism in MetaStorage, i.e. a learner is started on every Ignite node if it isn't already a voting member of the MetaStorage Group.
This will allow us to simplify the current implementation in the following ways:
1. Get rid of a pull model based on Watchers. Instead all updates will arrive at the Raft listener.
2. Simplify MetaStorage Raft storage due to the removal of the Watch functionality.

  was:
We want to use the learner mechanism in MetaStorage, i.e. a learner is started on every Ignite node if it isn't already a voting member of the MetaStorage Group.
This will allow us to simplify the current implementation in the following ways:
1. Get rid of a pull model based on Watchers. Instead all updates will arrive at the Raft listener.
2. Simplify MetaStorage Raft storage due to the removal of the Watch functionality.
3. Remove a local copy of the MetaStorage from the Vault.


> Metastorage learners support
> ----------------------------
>
>                 Key: IGNITE-18394
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18394
>             Project: Ignite
>          Issue Type: Epic
>            Reporter: Aleksandr Polovtcev
>            Assignee: Aleksandr Polovtcev
>            Priority: Major
>              Labels: ignite-3
>
> We want to use the learner mechanism in MetaStorage, i.e. a learner is started on every Ignite node if it isn't already a voting member of the MetaStorage Group.
> This will allow us to simplify the current implementation in the following ways:
> 1. Get rid of a pull model based on Watchers. Instead all updates will arrive at the Raft listener.
> 2. Simplify MetaStorage Raft storage due to the removal of the Watch functionality.



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