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From Ismaël Mejía (JIRA) <>
Subject [jira] [Commented] (BEAM-1810) Spark runner combineGlobally uses Kryo serialization
Date Mon, 27 Mar 2017 04:28:41 GMT


Ismaël Mejía commented on BEAM-1810:

I updated after the PR was merged, and I want to confirm this fix works for me. Thanks Aviem!

> Spark runner combineGlobally uses Kryo serialization
> ----------------------------------------------------
>                 Key: BEAM-1810
>                 URL:
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Aviem Zur
>            Assignee: Aviem Zur
> {{TransformTranslator#combineGlobally}} inadvertently uses Kryo serialization to serialize
data. This should never happen.
> This is due to Spark's implementation of {{RDD.isEmpty}} which takes the first element
to check if there are elements in the {{RDD}}, it is then serialized with Spark's configured
serializer (In our case, Kryo).

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