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https://issues.apache.org/jira/browse/BEAM-647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15752015#comment-15752015
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ASF GitHub Bot commented on BEAM-647:
-------------------------------------
GitHub user kobisalant opened a pull request:
https://github.com/apache/incubator-beam/pull/1624
[BEAM-647] Fault-tolerant sideInputs via Broadcast variables
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---
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kobisalant/incubator-beam
BEAM-647-Fault-tolerant-sideInputs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-beam/pull/1624.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 #1624
----
commit 228c613c70c4edf1b01294a487d49f0a5492136e
Author: ksalant <ksal...@payapal.com>
Date: 2016-12-15T17:42:47Z
[BEAM-647] Fault-tolerant sideInputs via Broadcast variables
----
> Fault-tolerant sideInputs via Broadcast variables
> -------------------------------------------------
>
> Key: BEAM-647
> URL: https://issues.apache.org/jira/browse/BEAM-647
> Project: Beam
> Issue Type: Bug
> Components: runner-spark
> Reporter: Amit Sela
> Assignee: Kobi Salant
>
> Following https://github.com/apache/incubator-beam/pull/909 which enables
> checkpointing to recover from failures, sideInputs (being implemented by
> broadcast variables) should be handled in a specific manner as described
> here:
> http://spark.apache.org/docs/1.6.2/streaming-programming-guide.html#accumulators-and-broadcast-variables.
> This is a bit more complicated than Aggregators (via Accumulators) as they
> are implemented using a single "aggregating" Accumulator, while a pipeline
> may contain multiple sideInputs.
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