[SPARK-46993] Allow session variables in more places such as from_json for schema

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.2
• Fix Version/s: 4.0.0
• Component/s: Spark Core
• Labels: pull-request-available
• Assignee: Serge Rielau
• Reporter: Serge Rielau
• Shepherd: Wenchen Fan
• Created: 06/Feb/24 19:43
• Updated: 08/Feb/24 08:25
• Resolved: 08/Feb/24 08:25

Description

It appears we do not allow session variables to provide a schema for from_json().
This is likely a generic restriction re constant folding.

Issue Links

• links to: GitHub Pull Request #45059