[jira] [Assigned] (IGNITE-15222) Metastorage's cursor commands next and hasNext must work correctly after Raft leader was changing.

["Mirza Aliev (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mirza Aliev reassigned IGNITE-15222:
------------------------------------

    Assignee: Mirza Aliev

> Metastorage's cursor commands next and hasNext must work correctly after Raft leader was changing.
> --------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-15222
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15222
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Mirza Aliev
>            Assignee: Mirza Aliev
>            Priority: Major
>             Fix For: 3.0.0-alpha3
>
>
> Metastorage's cursor commands next and hasNext is implemented using {{CursorNextCommand}} and {{CursorHasNextCommand}} Raft comands, which are Raft's Read Commands. Read commands are handled on Raft leader,  and state of cursor is not replicated on followers. That means that in case of changing a leadear in raft group, cursor next and hasNext will work incorrectly. 
> Possible solution is to change {{CursorNextCommand}} and {{CursorHasNextCommand}} to raft's wrtie commands, so they will be replicated on the followers and new follower will handle the commands correctly.



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