robertwb commented on a change in pull request #11174: [BEAM-7923] Pop failed
transform in CombineGlobally
URL: https://github.com/apache/beam/pull/11174#discussion_r395882293
##########
File path: sdks/python/apache_beam/transforms/core.py
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@@ -1811,6 +1811,8 @@ def add_input_types(transform):
return view
else:
if pcoll.windowing.windowfn != GlobalWindows():
+ # Remove the broken transform when running into value error.
+ pcoll.pipeline.transforms_stack.pop()
Review comment:
This is not the right place to pop this (internal) stack. Instead, we should
popping from the stack in a finally clause of a try block that pushes to the
stack. (Alternatively, we could manage the stack with a Python context, but
that might be overkill.)
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