[GitHub] incubator-predictionio issue #441: pio batchpredict error

[mars]

Github user mars commented on the issue:

    https://github.com/apache/incubator-predictionio/pull/441
  
    I do not understand what this PR does.
    
    Does this pull request fix that SparkException or cause it?
    
    Is this a problem using Spark 2.2 and `pio batchpredict`?
    
    What engine template does this occur for?



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