Github user wesm commented on the issue:

    https://github.com/apache/spark/pull/15821
  
    I recommend using the latest. The data format is forward/backward 
compatible so the JAR doesn't necessarily need to be 0.4.1 if you're using 
pyarrow 0.4.1 (0.4.1 fixed a Decimal regression in the Java library, but that 
isn't relevant here quite yet)


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