ibzib commented on pull request #15502:
URL: https://github.com/apache/beam/pull/15502#issuecomment-921139167


   > Also, the call to FileSystems.setDefaultPipelineOptions seems like a bit 
of a hack that is sprinkled all across the codebase; I'm not sure what the plan 
is for improving this so sorry for this PR just making it worse.
   
   I don't think there's a plan to improve this. FWIW I think 
`FileSystems.setDefaultPipelineOptions` is inadequately named; it should be 
probably be called `FileSystems.registerFileSystems` or something that more 
clearly conveys its purpose.
   
   I don't think createServerInfo is the best place to do this. 
createServerInfo is runner-agnostic, and it shouldn't have to know anything 
about file systems or the runner's JVM setup. It's better to put it up front in 
SparkExecutableStageFunction::call. 
https://github.com/apache/beam/blob/f969f9a3435ed4165f87c61d577dc5dd5de8ab47/runners/spark/src/main/java/org/apache/beam/runners/spark/translation/SparkExecutableStageFunction.java#L125
 


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