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https://issues.apache.org/jira/browse/BEAM-10209?focusedWorklogId=444416&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-444416
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ASF GitHub Bot logged work on BEAM-10209:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Jun/20 17:30
Start Date: 11/Jun/20 17:30
Worklog Time Spent: 10m
Work Description: InigoSJ commented on a change in pull request #11943:
URL: https://github.com/apache/beam/pull/11943#discussion_r438952009
##########
File path: sdks/python/apache_beam/transforms/combiners.py
##########
@@ -66,8 +66,21 @@ class Mean(object):
"""Combiners for computing arithmetic means of elements."""
class Globally(ptransform.PTransform):
"""combiners.Mean.Globally computes the arithmetic mean of the elements."""
+ def __init__(self, has_defaults=True, *args, **kwargs):
+ super(Mean.Globally, self).__init__()
+ self.has_defaults = has_defaults
+ self.args = args
+ self.kwargs = kwargs
+
def expand(self, pcoll):
- return pcoll | core.CombineGlobally(MeanCombineFn())
+ if self.has_defaults:
+ return pcoll | core.CombineGlobally(MeanCombineFn())
+ else:
+ return pcoll | core.CombineGlobally(MeanCombineFn()).without_defaults()
+
+ def without_defaults(self):
+ self.has_defaults = False
Review comment:
Another way could be doing `Mean.Globally(without_defaults=True)`, but
I'd say it's against the standard use of `CombineGlobally().without_defaults()`
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Issue Time Tracking
-------------------
Worklog Id: (was: 444416)
Time Spent: 1h 50m (was: 1h 40m)
> Add without_defaults to Mean
> -----------------------------
>
> Key: BEAM-10209
> URL: https://issues.apache.org/jira/browse/BEAM-10209
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Affects Versions: 2.21.0
> Reporter: Inigo San Jose Visiers
> Priority: P2
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> When using Windows and a Global Combiner with need to use
> `without_defaults()`, this is not possible when using the built-in combiner
> `Mean`, and the workaround is to do
> `CombineGlobally(MeanCombineFn()).without_defaults()`.
> Adding the option to use .without_defaults() directly would help both the
> code readability and ease of use.
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