TheNeuralBit commented on a change in pull request #14356:
URL: https://github.com/apache/beam/pull/14356#discussion_r620647659
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File path: sdks/python/apache_beam/runners/interactive/recording_manager.py
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@@ -289,10 +291,16 @@ def _watch(self, pcolls):
"""
watched_pcollections = set()
+ watched_dataframes = set()
for watching in ie.current_env().watching():
for _, val in watching:
if isinstance(val, beam.pvalue.PCollection):
watched_pcollections.add(val)
+ elif isinstance(val, DeferredBase):
+ watched_dataframes.add(val)
+ # Convert them all in a single step for efficiency.
+ for pcoll in to_pcollection(*watched_dataframes, always_return_tuple=True):
+ watched_pcollections.add(pcoll)
Review comment:
I think it would be preferable to use `to_pcollection(yield='pandas')`
here and then just concat the raw DataFrames we collect. That would avoid
issues with the imperfect mapping back to beam schemas (e.g. pandas allows
duplicate column names, and to_pcollection doesn't have a good story for
mapping the index)
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