[jira] [Created] (BEAM-8576) Regression when reading many files

["Stefan De Smit (Jira)" <ji...@apache.org>]

Stefan De Smit created BEAM-8576:
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             Summary: 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: 2.15.0, 2.14.0, 2.16.0
            Reporter: Stefan De Smit


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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