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https://issues.apache.org/jira/browse/BEAM-11868?focusedWorklogId=559692&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-559692
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ASF GitHub Bot logged work on BEAM-11868:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 02/Mar/21 01:41
Start Date: 02/Mar/21 01:41
Worklog Time Spent: 10m
Work Description: robertwb commented on a change in pull request #14060:
URL: https://github.com/apache/beam/pull/14060#discussion_r585184471
##########
File path: sdks/python/apache_beam/transforms/trigger.py
##########
@@ -369,6 +370,53 @@ def has_ontime_pane(self):
return False
+class AfterSynchronizedProcessingTime(TriggerFn):
+ """A "runner's-discretion" trigger downstream of a GroupByKey
+ with AfterProcessingTime trigger.
+
+ AfterSynchronizedProcessingTime is experimental.
+ No backwards compatibility guarantees.
+ """
Review comment:
Maybe make a note that this current implementation simply always fires.
##########
File path: sdks/python/apache_beam/transforms/core.py
##########
@@ -2364,6 +2364,22 @@ def from_runner_api_parameter(
def runner_api_requires_keyed_input(self):
return True
+ def get_windowing(self, inputs):
+ # Circular dep, because trigger pulls in CombineFn
+ from apache_beam.transforms.trigger import AfterProcessingTime
+ from apache_beam.transforms.trigger import AfterSynchronizedProcessingTime
+ windowing = inputs[0].windowing
+ if not isinstance(windowing.triggerfn, AfterProcessingTime):
Review comment:
Nit: I find "if [special case] else ..." easier to read than "if not
[special case] else ..."
##########
File path: sdks/python/apache_beam/transforms/core.py
##########
@@ -2364,6 +2364,22 @@ def from_runner_api_parameter(
def runner_api_requires_keyed_input(self):
return True
+ def get_windowing(self, inputs):
Review comment:
It's been a while since I've touched this code, but I think so. Can't be
hard to verify.
##########
File path: sdks/python/apache_beam/transforms/trigger.py
##########
@@ -369,6 +370,53 @@ def has_ontime_pane(self):
return False
+class AfterSynchronizedProcessingTime(TriggerFn):
Review comment:
Do we want users to use this directly, or should we make it private?
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Issue Time Tracking
-------------------
Worklog Id: (was: 559692)
Time Spent: 0.5h (was: 20m)
> Python AfterProcessingTime triggers result in additional delay at each GBK
> --------------------------------------------------------------------------
>
> Key: BEAM-11868
> URL: https://issues.apache.org/jira/browse/BEAM-11868
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Kenneth Knowles
> Assignee: Kenneth Knowles
> Priority: P2
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> See thread discussing it:
> https://lists.apache.org/thread.html/rd1b59fead3927b8769514f65fa66c051f80f68a6115dae356e86302c%40%3Cdev.beam.apache.org%3E
> The solution is to switch to match Java and have
> "AfterSynchronizedProcessingTime" but also to allow a runner to ignore that
> trigger and do whatever it wants.
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