[IMPALA-12549] Adjust estimations for small strings

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Frontend
• Labels: performance
• Epic Color: ghx-label-2
• Assignee: Zoltán Borók-Nagy
• Reporter: Zoltán Borók-Nagy
• Created: 08/Nov/23 14:42
• Updated: 05/Apr/24 13:39

Description

With small strings, the queries consume less memory.

We should adjust the memory estimations / min reservations to take the small strings into account.

At first we can be conservative, i.e. only take them into account for columns with max size less than the small string limit.