rohdesamuel commented on a change in pull request #14569:
URL: https://github.com/apache/beam/pull/14569#discussion_r623401340
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File path: sdks/python/apache_beam/dataframe/frames.py
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@@ -109,7 +109,11 @@ def drop(self, labels, axis, index, columns, errors,
**kwargs):
if index is not None and errors == 'raise':
# In order to raise an error about missing index values, we'll
# need to collect the entire dataframe.
- requires = partitionings.Singleton()
+ requires = partitionings.Singleton(
+ reason=(
+ "drop(errors='raise', axis='index') is not currently "
+ "parallelizable. We need to collect all data on a single node "
Review comment:
s/We need to collect/This requires collecting
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