它似乎缺少Java库Efficient Java Matrix Library（ejml），所以我从源here下载了。我正在创建Maven Jar可执行文件并在Openstack EDP Spark环境中运行。
我无法弄清楚如何解决这个java.lang.NoClassDefFoundError: org/ejml/simple/SimpleBase
我也尝试过ejml版本0.23,0.25,0.27,0.30,0.31。
Exception in thread "main" java.lang.NoClassDefFoundError: org/ejml/simple/SimpleBase
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at org.openstack.sahara.edp.SparkWrapper.main(SparkWrapper.java:17)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: org.ejml.simple.SimpleBase
at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)