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https://issues.apache.org/jira/browse/BEAM-4726?focusedWorklogId=170699&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-170699
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ASF GitHub Bot logged work on BEAM-4726:
----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Nov/18 16:29
Start Date: 29/Nov/18 16:29
Worklog Time Spent: 10m
Work Description: lostluck opened a new pull request #7159: [BEAM-4726]
Add heap profiling hook
URL: https://github.com/apache/beam/pull/7159
Add a heap profile hook. Writes per bundle heap snapshots files to a
designated directory, prefixed with "heap". Like with trace and CPU snapshots,
an additional file writing hook is needed to ensure what directory the files
end up in.
------------------------
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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_PVR_Flink/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/)
| [](https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/)
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Issue Time Tracking
-------------------
Worklog Id: (was: 170699)
Time Spent: 7.5h (was: 7h 20m)
> Reduce ParDo per element Invoke overhead
> ----------------------------------------
>
> Key: BEAM-4726
> URL: https://issues.apache.org/jira/browse/BEAM-4726
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-go
> Reporter: Robert Burke
> Assignee: Robert Burke
> Priority: Major
> Time Spent: 7.5h
> Remaining Estimate: 0h
>
> Each call to invoke allocates a new args []interface{}, but the common case
> is to run the same ProcessElement function over and again. It should be
> possible to have a container struct to retain the args slice, and avoid
> recomputing the indices for where to assign parameters before calling the
> ProcessElementFn.
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