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