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Posted to issues@ignite.apache.org by "Maksim Timonin (Jira)" <ji...@apache.org> on 2021/01/26 18:26:00 UTC
[jira] [Assigned] (IGNITE-13975) Validate that tables beind joined
have the same partition distribution
[ https://issues.apache.org/jira/browse/IGNITE-13975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Maksim Timonin reassigned IGNITE-13975:
---------------------------------------
Assignee: Maksim Timonin
> Validate that tables beind joined have the same partition distribution
> ----------------------------------------------------------------------
>
> Key: IGNITE-13975
> URL: https://issues.apache.org/jira/browse/IGNITE-13975
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Stanislav Lukyanov
> Assignee: Maksim Timonin
> Priority: Major
>
> To be able to join two PARTITIONED tables one needs to perform the JOIN on an affinity key, and also to make sure that the tables have the same partition distribution - otherwise, the result will be incorrect.
> Validation of whether the affinity key is being used for JOIN is to be done in https://issues.apache.org/jira/browse/IGNITE-13019.
> The goal of this ticket is to add validation of the partition distribution.
> Whenever a JOIN of PARTITIONED tables is being done, the SQL engine needs to ensure that
> * The tables use the same affinity function
> * The tables have the same number of partitions
> * The tables have the same node filters
> Same is for when REPLICATED tables are used and `treatReplicatedAsPartitioned=true` (see https://issues.apache.org/jira/browse/IGNITE-8732).
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