[
https://issues.apache.org/jira/browse/BEAM-9487?focusedWorklogId=600404&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-600404
]
ASF GitHub Bot logged work on BEAM-9487:
----------------------------------------
Author: ASF GitHub Bot
Created on: 21/May/21 14:55
Start Date: 21/May/21 14:55
Worklog Time Spent: 10m
Work Description: zhoufek opened a new pull request #14857:
URL: https://github.com/apache/beam/pull/14857
Adds a check for trigger safety to Python's GroupByKey. This is similar to
`GroupByKey#triggerIsSafe` and `Trigger#mayFinish` from the Java SDK but with
some notable changes:
* Named it `may_lose_data` instead of `may_finish` to better convey the
problem and allow more flexibility in the "true" scenario.
* Returns an enum rather than a bool to convey the exact reason. This allows
us to account for triggers that can lose data for reasons other than finishing
(e.g. `Repeatedly(AfterCount(42)`) may lose data due to not enough data coming
in).
* Determining whether or not the trigger is safe is moved entirely to the
specific `TriggerFn` implementation. This minimizes tracking exceptions
everywhere anyone may want to forbid unsafe triggers and should make it easier
to reuse and expand in the future.
* An `--allow_unsafe_triggers flag` is added to skip the check. Not only
does this offer backwards compatibility, but it also allows us avoiding the
check when data loss is acceptable or when no unintentional loss is guaranteed
(e.g. unit tests). This is similar to the flag for allowing nondeterministic
coders.
------------------------
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`ValidatesRunner` compliance status (on master branch)
--------------------------------------------------------
<table>
<thead>
<tr>
<th>Lang</th>
<th>ULR</th>
<th>Dataflow</th>
<th>Flink</th>
<th>Samza</th>
<th>Spark</th>
<th>Twister2</th>
</tr>
</thead>
<tbody>
<tr>
<td>Go</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
</a>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
</tr>
<tr>
<td>Java</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/badge/icon?subject=V1+Streaming";>
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</a><br>
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<img alt="Build Status"
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</a><br>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon?subject=Java+8";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/badge/icon?subject=Java+11";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
</a><br>
<a
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<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon?subject=Portable+Streaming";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/badge/icon?subject=Portable";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon";>
</a><br>
<a
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<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/badge/icon?subject=Structured+Streaming";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/badge/icon";>
</a>
</td>
</tr>
<tr>
<td>Python</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
</a><br>
<a
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<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon?subject=ValCont";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/badge/icon?subject=Portable";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
</tr>
<tr>
<td>XLang</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
</tr>
</tbody>
</table>
Examples testing status on various runners
--------------------------------------------------------
<table>
<thead>
<tr>
<th>Lang</th>
<th>ULR</th>
<th>Dataflow</th>
<th>Flink</th>
<th>Samza</th>
<th>Spark</th>
<th>Twister2</th>
</tr>
</thead>
<tbody>
<tr>
<td>Go</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
</tr>
<tr>
<td>Java</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/badge/icon?subject=V1";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/badge/icon?subject=V1+Java11";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
</a><br>
</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
</tr>
<tr>
<td>Python</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
</tr>
<tr>
<td>XLang</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
<td>---</td>
</tr>
</tbody>
</table>
Post-Commit SDK/Transform Integration Tests Status (on master branch)
------------------------------------------------------------------------------------------------
<table>
<thead>
<tr>
<th>Go</th>
<th>Java</th>
<th>Python</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/badge/icon?subject=3.6";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/badge/icon?subject=3.7";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/badge/icon?subject=3.8";>
</a>
</td>
</tr>
</tbody>
</table>
Pre-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
<table>
<thead>
<tr>
<th>---</th>
<th>Java</th>
<th>Python</th>
<th>Go</th>
<th>Website</th>
<th>Whitespace</th>
<th>Typescript</th>
</tr>
</thead>
<tbody>
<tr>
<td>Non-portable</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/badge/icon";>
</a><br>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/badge/icon?subject=Tests";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/badge/icon?subject=Lint";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/badge/icon?subject=Docker";>
</a><br>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/badge/icon?subject=Docs";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
</tr>
<tr>
<td>Portable</td>
<td>---</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>
<a
href="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/";>
<img alt="Build Status"
src="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/badge/icon";>
</a>
</td>
<td>---</td>
<td>---</td>
<td>---</td>
</tr>
</tbody>
</table>
See
[.test-infra/jenkins/README](https://github.com/apache/beam/blob/master/.test-infra/jenkins/README.md)
for trigger phrase, status and link of all Jenkins jobs.
GitHub Actions Tests Status (on master branch)
------------------------------------------------------------------------------------------------
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[](https://github.com/apache/beam/actions?query=workflow%3A%22Python+Tests%22+branch%3Amaster+event%3Aschedule)
[](https://github.com/apache/beam/actions?query=workflow%3A%22Java+Tests%22+branch%3Amaster+event%3Aschedule)
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Issue Time Tracking
-------------------
Worklog Id: (was: 600404)
Time Spent: 7.5h (was: 7h 20m)
> GBKs on unbounded pcolls with global windows and no triggers should fail
> ------------------------------------------------------------------------
>
> Key: BEAM-9487
> URL: https://issues.apache.org/jira/browse/BEAM-9487
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Udi Meiri
> Assignee: Zachary Houfek
> Priority: P2
> Labels: EaseOfUse, starter
> Time Spent: 7.5h
> Remaining Estimate: 0h
>
> This, according to "4.2.2.1 GroupByKey and unbounded PCollections" in
> https://beam.apache.org/documentation/programming-guide/.
> bq. If you do apply GroupByKey or CoGroupByKey to a group of unbounded
> PCollections without setting either a non-global windowing strategy, a
> trigger strategy, or both for each collection, Beam generates an
> IllegalStateException error at pipeline construction time.
> Example where this doesn't happen in Python SDK:
> https://stackoverflow.com/questions/60623246/merge-pcollection-with-apache-beam
> I also believe that this unit test should fail, since test_stream is
> unbounded, uses global window, and has no triggers.
> {code}
> def test_global_window_gbk_fail(self):
> with TestPipeline() as p:
> test_stream = TestStream()
> _ = p | test_stream | GroupByKey()
> {code}
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