Hi Pol,
thanks for your suggestion, I am going to use Spark-3.0.0 for GPU
acceleration,so I update the scala to the *version 2.12.11* and the latest
*2.13* ,but the error is still there, and by the way , the Spark version is
*spark-3.0.0-preview2-bin-without-hadoop*
Caused by: java.lang.ClassNotFoundException: scala.Product$class
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
Charles cai
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