[HIVE-11462] GenericUDFStruct should constant fold at compile time

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0, 2.0.0
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: UDF
• Release Note: Constant fold struct() UDF
• Assignee: Gopal Vijayaraghavan
• Reporter: Gopal Vijayaraghavan
• Created: 05/Aug/15 04:38
• Updated: 09/Aug/18 15:37
• Resolved: 12/Aug/15 23:46

Description

HIVE-11428 introduces a constant Struct Object, which is available for the runtime operators to assume as a constant parameter.

This operator isn't constant folded during compilation since the UDF returns a complex type, which is logged as warning by the constant propogation layer.

Issue Links

• is part of: HIVE-11315 Compilation performance issues for large queries
• is related to: HIVE-11468 Vectorize: Struct IN() clauses
• is related to: HIVE-20351 GenericUDFNamedStruct should constant fold at compile time
• relates to: HIVE-13951 GenericUDFArray should constant fold at compile time
• requires: HIVE-11428 Performance: Struct IN() clauses are extremely slow (~10x slower)