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https://issues.apache.org/jira/browse/BEAM-8576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17122594#comment-17122594
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Beam JIRA Bot commented on BEAM-8576:
-------------------------------------
This issue is P2 but has been unassigned without any comment for 60 days so it
has been labeled "stale-P2". If this issue is still affecting you, we care!
Please comment and remove the label. Otherwise, in 14 days the issue will be
moved to P3.
Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed
explanation of what these priorities mean.
> Regression when reading many files
> ----------------------------------
>
> Key: BEAM-8576
> URL: https://issues.apache.org/jira/browse/BEAM-8576
> Project: Beam
> Issue Type: Bug
> Components: runner-spark
> Affects Versions: 2.14.0, 2.15.0, 2.16.0
> Reporter: Stefan De Smit
> Priority: P2
> Labels: stale-P2
> Attachments: Beam_2.12_Dag.png, Beam_2.12_Stages.png,
> Beam_2.14_Dag.png, Beam_2.14_Stages.png
>
>
> When reading many files, I used to get many tasks. (beam 2.12)
> When I upgrade to beam 2.14, the same code leads to different execution where
> all files are read by only 1 task.
> This happens when not using the Source but the DoFn's (via
> 'withHintMatchesManyFiles')
> {code:java}
> final PCollection<GenericRecord> records =
> pipeline.apply(AvroIO.readGenericRecords(mySchema)
> .from(options.getInputPath() +
> "/*/*/*/data/file.avro").withHintMatchesManyFiles());
> records.apply(Count.globally()) {code}
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