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

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

     [ https://issues.apache.org/jira/browse/BEAM-8576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan De Smit updated BEAM-8576:
---------------------------------
    Attachment: Beam_2.14_Stages.png
                Beam_2.14_Dag.png
                Beam_2.12_Stages.png
                Beam_2.12_Dag.png

> 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: Major
>         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}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)