aromanenko-dev commented on issue #21092:
URL: https://github.com/apache/beam/issues/21092#issuecomment-1256255125

   @mosche AFAIK, there is no specific Scala dependencies for Spark portable 
runner and job server. They are sitting in the same package branch and have the 
same Spark/Scala dependencies as a native runner. I'm sure that @ibzib should 
know much better than me.
   
   Also, I'm wondering why Scala version was specifically set to 2.12.15 
[here](https://github.com/apache/beam/blob/19f5e62c61dd9b201bc471fe79d109fa8406fff9/runners/spark/spark_runner.gradle#L164)
 since by default it is that way for Spark 3:
   ```
     spark_version = '3.1.2'
     spark_scala_version = '2.12'
   ```
   
   Indeed, the right solution would be align the spark/scala versions. The 
question here is do we need to support the different versions or not?
   
   


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