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https://issues.apache.org/jira/browse/BEAM-8537?focusedWorklogId=379632&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-379632
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ASF GitHub Bot logged work on BEAM-8537:
----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Jan/20 22:03
Start Date: 30/Jan/20 22:03
Worklog Time Spent: 10m
Work Description: boyuanzz commented on pull request #10375: [BEAM-8537]
Provide WatermarkEstimator to track watermark
URL: https://github.com/apache/beam/pull/10375#discussion_r373218142
##########
File path: sdks/python/apache_beam/runners/common.py
##########
@@ -503,6 +534,182 @@ def invoke_process(self,
windowed_value, self.process_method(windowed_value.value))
+class _ThreadsafeWatermarkEstimator(object):
Review comment:
Thanks for pointing out that. I'm curious how `common.py` is compiled and
how other modules get involved. If moving these into another helper file
meanwhile importing the helper file doesn't increase compiling time, then
that's the way to go.
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Issue Time Tracking
-------------------
Worklog Id: (was: 379632)
Time Spent: 8.5h (was: 8h 20m)
> Provide WatermarkEstimatorProvider for different types of WatermarkEstimator
> ----------------------------------------------------------------------------
>
> Key: BEAM-8537
> URL: https://issues.apache.org/jira/browse/BEAM-8537
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core, sdk-py-harness
> Reporter: Boyuan Zhang
> Assignee: Boyuan Zhang
> Priority: Major
> Time Spent: 8.5h
> Remaining Estimate: 0h
>
> This is a follow up for in-progress PR:
> https://github.com/apache/beam/pull/9794.
> Current implementation in PR9794 provides a default implementation of
> WatermarkEstimator. For further work, we want to let WatermarkEstimator to be
> a pure Interface. We'll provide a WatermarkEstimatorProvider to be able to
> create a custom WatermarkEstimator per windowed value. It should be similar
> to how we track restriction for SDF:
> WatermarkEstimator <---> RestrictionTracker
> WatermarkEstimatorProvider <---> RestrictionTrackerProvider
> WatermarkEstimatorParam <---> RestrictionDoFnParam
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