[jira] [Assigned] (IGNITE-21018) Sql. Introduce cache for plan mapping

["Pavel Pereslegin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-21018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pavel Pereslegin reassigned IGNITE-21018:
-----------------------------------------

    Assignee: Pavel Pereslegin

> Sql. Introduce cache for plan mapping
> -------------------------------------
>
>                 Key: IGNITE-21018
>                 URL: https://issues.apache.org/jira/browse/IGNITE-21018
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql
>            Reporter: Konstantin Orlov
>            Assignee: Pavel Pereslegin
>            Priority: Major
>              Labels: ignite-3
>
> Mapping query on cluster topology is fairly expensive operation, because it requires acquiring replicas per every partition a traversing a plan tree in order to compute colocation of a query fragment.
> This problem can be mitigated by introducing a cache for mapped queries.
> Implementation notes: do not forget to invalidate cache when partition lease got expired or logical topology has been changed.



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