Github user marevol commented on the issue:
https://github.com/apache/incubator-predictionio/pull/336
+1
As @pferrel 's comment, I think it may be better to use a directory(ex.
lib/spark) other than lib if we want to add arbitrary JARs to spark-submit.
If we put them into lib, it's difficult to discriminate if JAR should be
submitted to Spark.
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