Option to not fork DirectRunner #19253
Description
Hi. When using a python debugger, it would be nice to be able to debug ops as they are run locally by --runner DirectRunner however it seems that Beam forks the process to actually run the ops. Unfortuatnely most python debuggers (mine is pydevd) don't support following forks. It it possible to add a flag to DirectRunner to keep the DIrectRunner in-process?
Imported from Jira BEAM-6417. Original Jira may contain additional context.
Reported by: thomas.deegan.