[BEAM-9489] python typehints: reduce the number of runtime-type-check wrappers

• Type: Bug
• Status: Open
• Priority: P3
• Resolution: Unresolved
• Component/s: sdk-py-core
• Labels: starter types
• Assignee: Unassigned
• Reporter: Udi Meiri
• Created: 11/Mar/20 22:35
• Updated: 04/Jun/22 16:19

Description

The --runtime_type_check flag is considered to be a performance penalty.
One of the possible slowdowns is the wrapper around DoFn.process(), which adds an extra call to the wrapped process() method.
Currently, there are 2 wrappers applied: OutputCheckWrapperDoFn and TypeCheckWrapperDoFn. These could be merged into one to possibly save on overhead.