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Posted to issues@ignite.apache.org by "Roman Kondakov (Jira)" <ji...@apache.org> on 2020/06/01 15:43:00 UTC

[jira] [Updated] (IGNITE-12899) Calcite integration. Distribution multitrait

     [ https://issues.apache.org/jira/browse/IGNITE-12899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Kondakov updated IGNITE-12899:
------------------------------------
    Priority: Minor  (was: Major)

> Calcite integration. Distribution multitrait
> --------------------------------------------
>
>                 Key: IGNITE-12899
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12899
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Igor Seliverstov
>            Priority: Minor
>
> Currently Ignite nodes have single distribution value which isn't true in several cases like:
>  # a partitioned table with a key alias should have 2 distribution traits: by _key and by key alias (id for example) - without distribution by _key column almost impossible to implement IGNITE-12692
>  # After inner / cross join the result should have several hash distributions (by left and by right keys) - it may be important on join transpose optimization
>  # On project a source distribution key may appear more than once, so the result should contain a distribution for each distribution key position.



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