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https://issues.apache.org/jira/browse/BEAM-5987?focusedWorklogId=167851&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-167851
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ASF GitHub Bot logged work on BEAM-5987:
----------------------------------------
Author: ASF GitHub Bot
Created on: 20/Nov/18 17:09
Start Date: 20/Nov/18 17:09
Worklog Time Spent: 10m
Work Description: dmvk opened a new pull request #7091: [BEAM-5987]
Spark: Share cached side inputs between tasks.
URL: https://github.com/apache/beam/pull/7091
We should try to reuse deserialized side inputs among spark tasks.
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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/)
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| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Gradle/lastCompletedBuild/)
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[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink/lastCompletedBuild/)
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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/)
| [](https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/)
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Issue Time Tracking
-------------------
Worklog Id: (was: 167851)
Time Spent: 1h (was: 50m)
> Spark SideInputReader performance
> ---------------------------------
>
> Key: BEAM-5987
> URL: https://issues.apache.org/jira/browse/BEAM-5987
> Project: Beam
> Issue Type: Bug
> Components: runner-spark
> Affects Versions: 2.8.0
> Reporter: David Moravek
> Assignee: David Moravek
> Priority: Major
> Fix For: 2.9.0
>
> Attachments: Screen Shot 2018-11-06 at 13.05.36.png
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> We did some profiling of a spark job and 90% of the application time was
> spent on side input deserialization.
> For spark, an easy fix is to cache materialized side inputs per bundle. This
> improved running time of the profiled job from 3 hours to 30 minutes.
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