Fix Iterable todo In CoGroupByKey

[damccorm]

 

Change iterable_input_value_types to be either type.Iterable or rename the variable to specify it is supposed to be a list.

beam/sdks/python/apache_beam/transforms/util.py

Line 198 in 6e33971

# TODO: Change List[t] to Iterable[t]

Imported from Jira BEAM-14084. Original Jira may contain additional context.
Reported by: Ryan.Thompson.

[ryanthompson591]

.take-issue

[ryanthompson591]

Fixed in #22984

This will be a breaking change to any pipelines that expect the output of CoGroupByKey to be a list instead of an iterable.

I've documentation on how to fix pipelines for this breaking change.

[ryanthompson591]

.add-label done-and-done