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https://issues.apache.org/jira/browse/BEAM-6407?focusedWorklogId=186450&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-186450
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ASF GitHub Bot logged work on BEAM-6407:
----------------------------------------
Author: ASF GitHub Bot
Created on: 17/Jan/19 17:35
Start Date: 17/Jan/19 17:35
Worklog Time Spent: 10m
Work Description: kennknowles commented on pull request #7550:
[BEAM-6407] Cherry pick #7537, fixes FileIO.writeDynamic() in the DirectRunner
URL: https://github.com/apache/beam/pull/7550
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Issue Time Tracking
-------------------
Worklog Id: (was: 186450)
Time Spent: 2h 20m (was: 2h 10m)
> regression: FileIO.writeDynamic() with side inputs fails in DirectRunner
> ------------------------------------------------------------------------
>
> Key: BEAM-6407
> URL: https://issues.apache.org/jira/browse/BEAM-6407
> Project: Beam
> Issue Type: Bug
> Components: runner-direct
> Affects Versions: 2.9.0
> Reporter: Niel Markwick
> Assignee: Niel Markwick
> Priority: Blocker
> Labels: regression
> Fix For: 2.10.0
>
> Attachments: beam-filewriter-demo.tgz
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> When FileIO.writeDynamic is used with automatic sharding and a Contextful.Fn
> that uses side inputs for the file naming, DirectRunner (and TestPipeline)
> fail with:
> {{java.lang.IllegalStateException: All PCollectionViews that are consumed
> must be written by some WriteView PTransform: Missing [<unnamed>
> [RunnerPCollectionView]]}}
>
> Example code:
> {code:java}
> PCollectionView<String> outputFileName =
> pipeline.apply(
> "outputDir",
> Create.of("/tmp/testout")).apply(View.asSingleton());
> Contextful.Fn<String, FileIO.Write.FileNaming> manifestNaming =
> (element, c) ->
> (window, pane, numShards, shardIndex, compression) ->
> c.sideInput(outputFileName)+shardIndex;
> pipeline.apply(FileIO.<String, String>writeDynamic()
> .by(SerializableFunctions.constant(""))
> .withDestinationCoder(StringUtf8Coder.of())
> .via(TextIO.sink())
> .withTempDirectory("/tmp")
> .withNaming(Contextful.of(
> manifestNaming,
> Requirements.requiresSideInputs(outputFileName))));
> {code}
>
> This does not occur in Dataflow-runner
> It does not occur if the ContextFul.Fn is not given side inputs.
> It does not occur if withNumShards(1) is set.
> It did not occur in 2.8.0, and does in 2.9.0 and 2.10.0-SNAPSHOT (as of today)
>
> The cause appears to be due to the DirectRunner using TransformOverrides
> re-writing FileIO sinks to use runner-determined-sharding
> ( see [DirectRunner.java line
> 226|https://github.com/apache/beam/blob/master/runners/direct-java/src/main/java/org/apache/beam/runners/direct/DirectRunner.java#L226]
> )
> but I do not know why this started occuring in 2.9.0...
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