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Posted to commits@beam.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/11/10 21:50:59 UTC
[jira] [Commented] (BEAM-310) Exercise
splitIntoBundles/generateInitialSplits in the Direct Runner
[ https://issues.apache.org/jira/browse/BEAM-310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15655261#comment-15655261 ]
ASF GitHub Bot commented on BEAM-310:
-------------------------------------
GitHub user tgroh opened a pull request:
https://github.com/apache/incubator-beam/pull/1339
[BEAM-310] Actually Split Root Transforms
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---
Permit the ExecutorServiceParallelExecutor to control its own
ExecutorService by passing only a TargetParallelism parameter. Split
roots into the greater of 3 or the target parallelism.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tgroh/incubator-beam actually_split
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-beam/pull/1339.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1339
----
commit b18b876de91bfc01c82cf10bf53eb27a5aef3b09
Author: Thomas Groh <tg...@google.com>
Date: 2016-11-10T21:47:40Z
Actually Split Root Transforms
Permit the ExecutorServiceParallelExecutor to control its own
ExecutorService by passing only a TargetParallelism parameter. Split
roots into the greater of 3 or the target parallelism.
----
> Exercise splitIntoBundles/generateInitialSplits in the Direct Runner
> --------------------------------------------------------------------
>
> Key: BEAM-310
> URL: https://issues.apache.org/jira/browse/BEAM-310
> Project: Beam
> Issue Type: Improvement
> Components: runner-direct
> Reporter: Thomas Groh
> Assignee: Thomas Groh
> Fix For: 0.3.0-incubating
>
>
> BoundedSource#splitIntoBundles and UnboundedSource#generateInitialSplits are the methods by which sources can be accessed in parallel. Exercising these methods allows reads (and all transforms downstream) to be executed in parallel both pre and post a GroupByKey
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