derrickaw commented on code in PR #38046:
URL: https://github.com/apache/beam/pull/38046#discussion_r3086207757
##########
sdks/python/apache_beam/yaml/yaml_provider.py:
##########
@@ -1207,6 +1207,22 @@ def log_and_return(x):
return pcoll | "LogForTesting" >> beam.Map(log_and_return)
+ class Reshuffle(beam.PTransform):
+ """Reshuffles the elements of a PCollection.
+
+ Redistributes the elements of a PCollection to prevent fusion or balance
+ load.
+
+ Args:
+ num_buckets: (optional) Specifies the maximum random keys that would be
+ generated. If not set, a default value is used.
+ """
+ def __init__(self, num_buckets: Optional[int] = None):
+ self.num_buckets = num_buckets
+
+ def expand(self, pcoll):
+ return pcoll | beam.Reshuffle(num_buckets=self.num_buckets)
Review Comment:
num_buckets is supported -
https://github.com/apache/beam/blob/0471bb5e935905aa70c6b4ee05604318836be0c9/sdks/python/apache_beam/transforms/util.py#L1561
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