[IGNITE-12899] Calcite integration. Distribution multitrait

• Type: Task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Labels: calcite2-required calcite3-required
• Assignee: Unassigned
• Reporter: Igor Seliverstov
• Created: 15/Apr/20 08:50
• Updated: 18/Jun/21 09:33

Description

Currently Ignite nodes have single distribution value which isn't true in several cases like:

1. 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
2. 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
3. On project a source distribution key may appear more than once, so the result should contain a distribution for each distribution key position.

Issue Links

• is part of: IGNITE-12248 Apache Calcite based query execution engine