[IGNITE-6626] SQL: Avoid materializing rows when possible

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4
• Component/s: cache, sql
• Labels: performance
• Assignee: Vladimir Ozerov
• Reporter: Vladimir Ozerov
• Created: 13/Oct/17 12:18
• Updated: 02/Nov/17 18:38
• Resolved: 02/Nov/17 18:38

Description

We need to filter backup keys during query execution. Currently to achieve this we do the following:
1) Get row link
2) Materialize the row (!!!)
3) Create H2 row (H2 wrapping)
4) Then get key from H2 row (unwrapping)
5) Calculate partition through affinity function

What it might look like:
1) Get row link
2) Get partition from link

This ticket is to implement row filtering on B+Tree level and avoid their materialization.

Issue Links

• is blocked by: IGNITE-6624 SQL: IndexingQueryCacheFilter should use immediate partition data if possible
• links to: GitHub Pull Request #2848