Ismaël Mejía updated BEAM-8384:
    Status: Open  (was: Triage Needed)

> Spark runner is not respecting spark.default.parallelism user defined 
> configuration
> -----------------------------------------------------------------------------------
>                 Key: BEAM-8384
>                 URL: https://issues.apache.org/jira/browse/BEAM-8384
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>    Affects Versions: 2.16.0
>            Reporter: Ismaël Mejía
>            Assignee: Ismaël Mejía
>            Priority: Major
> It was reported in [the mailing 
> list|https://lists.apache.org/thread.html/792fb7fc2a5113837fbcdafce6a5d9100309881b366c1a7163d2c898@%3Cdev.beam.apache.org%3E]
>  that the Spark runner is not respecting the user defined Spark default 
> parallelism configuration. We should investigate and if it is the case ensure 
> that a user defined configuration is always respected. Runner optimizations 
> should apply only for default (unconfigured) values otherwise we will confuse 
> users and limit them from parametrizing Spark for their best convenience.

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