我想在我使用的 spark 中加載已保存為 .sav 檔案的機器學習模型
val loaded_model = Pipeline.load("model_final.sav")
或者
val loaded_model = PipelineModel.load("model_final.sav")
我遇到例外
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:64)
Caused by: java.lang.NoClassDefFoundError: org/apache/spark/ml/Pipeline$
at migration2$.main(migration2.scala:61)
at migration2.main(migration2.scala)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.apache.spark.ml.Pipeline$
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
... 7 more
uj5u.com熱心網友回復：
provided從您的依賴項中洗掉。所以如下：
libraryDependencies = "org.apache.spark" %% "spark-mllib" % "2.1.0" % "provided"
應改為：
libraryDependencies = "org.apache.spark" %% "spark-mllib" % "2.1.0"
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