lostluck commented on a change in pull request #11653:
URL: https://github.com/apache/beam/pull/11653#discussion_r424735747
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File path: sdks/python/apache_beam/runners/worker/bundle_processor.py
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@@ -237,30 +235,72 @@ def try_split(self, fraction_of_remainder,
total_buffer_size):
current_element_progress = (
current_element_progress_object.fraction_completed)
# Now figure out where to split.
- # The units here (except for keep_of_element_remainder) are all in
- # terms of number of (possibly fractional) elements.
- remainder = total_buffer_size - self.index - current_element_progress
- keep = remainder * fraction_of_remainder
- if current_element_progress < 1:
- keep_of_element_remainder = keep / (1 - current_element_progress)
- # If it's less than what's left of the current element,
- # try splitting at the current element.
- if keep_of_element_remainder < 1:
- split = self.receivers[0].try_split(
- keep_of_element_remainder
- ) # type: Optional[Tuple[operations.SdfSplitResultsPrimary,
operations.SdfSplitResultsResidual]]
- if split:
- element_primary, element_residual = split
- self.stop = self.index + 1
- return self.index - 1, element_primary, element_residual, self.stop
- # Otherwise, split at the closest element boundary.
- # pylint: disable=round-builtin
- stop_index = (
- self.index + max(1, int(round(current_element_progress + keep))))
- if stop_index < self.stop:
- self.stop = stop_index
- return self.stop - 1, None, None, self.stop
- return None
+ split = self._compute_split(
+ self.index,
+ current_element_progress,
+ self.stop,
+ fraction_of_remainder,
+ total_buffer_size,
+ allowed_split_points,
+ self.receivers[0].try_split)
+ if split:
+ self.stop = split[-1]
+ return split
+
+ @staticmethod
+ def _compute_split(
+ index,
+ current_element_progress,
+ stop,
+ fraction_of_remainder,
+ total_buffer_size,
Review comment:
The part I missed was that this is provided by the runner as part of the
DesiredSplit, rather than something computed by the SDK itself. I didn't see
that change. This all makes sense. Thanks!
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