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https://issues.apache.org/jira/browse/BEAM-5519?focusedWorklogId=196316&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-196316
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ASF GitHub Bot logged work on BEAM-5519:
----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Feb/19 17:12
Start Date: 08/Feb/19 17:12
Worklog Time Spent: 10m
Work Description: kyle-winkelman commented on pull request #6511:
[BEAM-5519] Remove call to groupByKey in Spark Streaming.
URL: https://github.com/apache/beam/pull/6511
Prevent the duplication of encode/decode cycle in wasted call to groupByKey
in spark streaming. It is a waste because after the groupByKey is a call to
updateStateByKey which will ensure that the data is shuffled to the correct
processing location.
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Post-Commit Tests Status (on master branch)
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Lang | SDK | Apex | Dataflow | Flink | Gearpump | Samza | Spark
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Go | [](https://builds.apache.org/job/beam_PostCommit_Go_GradleBuild/lastCompletedBuild/)
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Java | [](https://builds.apache.org/job/beam_PostCommit_Java_GradleBuild/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark_Gradle/lastCompletedBuild/)
Python | [](https://builds.apache.org/job/beam_PostCommit_Python_Verify/lastCompletedBuild/)
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</br> [](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/)
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Issue Time Tracking
-------------------
Worklog Id: (was: 196316)
Time Spent: 2h (was: 1h 50m)
> Spark Streaming Duplicated Encoding/Decoding Effort
> ---------------------------------------------------
>
> Key: BEAM-5519
> URL: https://issues.apache.org/jira/browse/BEAM-5519
> Project: Beam
> Issue Type: Bug
> Components: runner-spark
> Reporter: Kyle Winkelman
> Assignee: Kyle Winkelman
> Priority: Major
> Labels: spark, spark-streaming, triaged
> Time Spent: 2h
> Remaining Estimate: 0h
>
> When using the SparkRunner in streaming mode. There is a call to groupByKey
> followed by a call to updateStateByKey. BEAM-1815 fixed an issue where this
> used to cause 2 shuffles but it still causes 2 encode/decode cycles.
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