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https://issues.apache.org/jira/browse/BEAM-7951?focusedWorklogId=338041&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-338041
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ASF GitHub Bot logged work on BEAM-7951:
----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Nov/19 09:20
Start Date: 04/Nov/19 09:20
Worklog Time Spent: 10m
Work Description: sunjincheng121 commented on pull request #9979:
[BEAM-7951] Allow runner to configure customization WindowedValue coder.
URL: https://github.com/apache/beam/pull/9979
Motivation:
The coder of WindowedValue cannot be configured and it’s always
FullWindowedValueCoder. We don't need to serialize the timestamp, window and
pane properties in Flink and so it will be better to make the coder
configurable (i.e. allowing to use ValueOnlyWindowedValueCoder)
Detail changes:
- Add ValueOnlyWindowedValueCoder into MODEL_CODER so that we can use value
only coder between runner and harness.
- To make it configurable and also maybe for other configurations in
futher(i.e., more general), we add a `configurations` map in Components.
- Add python ValueOnlyWindowedValueCoder.
Some concerns reviewers may have:
- Do we have any other options instead of adding the configurations in
Components(beam_runner_api.proto).
Yes, we have other options. For example, we can add some flags in the
methods when call `addSdkWireCoder` and `addRunnerWireCoder`. However, the call
stack is very deep(from DefaultJobBundleFactory.forStage() to
WireCoders.addSdkWireCoder()). It would be a mess if we add a flag for all
these methods.
- The current changes are not used in Beam project.
Due to the doFn can emit timestamp in beam, it seems we can't tell when we
can ignore encode or decode the timestamp field, i.e., currently, we only use
FullWindowedValueCoder in Beam. However, in Flink we don't have such problem
and can make use of the ValueOnlyWindowedValueCoder.
- Have not add support for other SDKs(go)?
Maybe we can add support for other SDKs later when we find it is useful?
Post-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
Lang | SDK | Apex | Dataflow | Flink | Gearpump | Samza | Spark
--- | --- | --- | --- | --- | --- | --- | ---
Go | [](https://builds.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/)
| --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/)
| --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/)
Java | [](https://builds.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/)
Python | [](https://builds.apache.org/job/beam_PostCommit_Python2/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python35/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/)
| --- | [](https://builds.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python35_VR_Flink/lastCompletedBuild/)
| --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/)
XLang | --- | --- | --- | [](https://builds.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/)
| --- | --- | ---
Pre-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
--- |Java | Python | Go | Website
--- | --- | --- | --- | ---
Non-portable | [](https://builds.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/)
Portable | --- | [](https://builds.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/)
| --- | ---
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Issue Time Tracking
-------------------
Worklog Id: (was: 338041)
Remaining Estimate: 0h
Time Spent: 10m
> Allow runner to configure customization WindowedValue coder such as
> ValueOnlyWindowedValueCoder
> -----------------------------------------------------------------------------------------------
>
> Key: BEAM-7951
> URL: https://issues.apache.org/jira/browse/BEAM-7951
> Project: Beam
> Issue Type: Sub-task
> Components: java-fn-execution
> Reporter: sunjincheng
> Assignee: sunjincheng
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The coder of WindowedValue cannot be configured and it’s always
> FullWindowedValueCoder. We don't need to serialize the timestamp, window and
> pane properties in Flink and so it will be better to make the coder
> configurable (i.e. allowing to use ValueOnlyWindowedValueCoder)
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