You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@ignite.apache.org by "Igor Seliverstov (Jira)" <ji...@apache.org> on 2020/04/15 11:28:00 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 ]
Igor Seliverstov updated IGNITE-12899:
--------------------------------------
Description:
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.
was:
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
> 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: Major
>
> 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.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)