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https://issues.apache.org/jira/browse/SPARK-52853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandy Ryza reassigned SPARK-52853:
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Assignee: Jacky Wang
> Prevent setting Spark confs on the session within Pipelines Python definition
> files
> -----------------------------------------------------------------------------------
>
> Key: SPARK-52853
> URL: https://issues.apache.org/jira/browse/SPARK-52853
> Project: Spark
> Issue Type: Sub-task
> Components: Declarative Pipelines
> Affects Versions: 4.1.0
> Reporter: Sandy Ryza
> Assignee: Jacky Wang
> Priority: Major
> Labels: pull-request-available
>
> Setting spark session confs is an imperative construct that can cause
> friction and unexpected behavior from within a pipeline declaration. E.g. it
> makes pipeline behavior sensitive to the order that Python files are imported
> in, which can be unpredictable. There are already existing mechanisms for
> setting Spark confs for pipelines:
> * The configuration setting in the pipeline spec
> * The `spark_conf` arguments on various Python decorators
> Raising an error when someone tries to invoke to set a conf in this situation
> would avoid this unpredictable behavior.
>
> The two ways to set confs from Python are:
> * spark.conf.set("key", "value")
> * spark.sql("SET key=value")
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