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  1. ,
    via by Unknown author

    Needs to add netty-transport-native-epoll with a OS classifier to the classpath, it's not included in netty-all

  2. ,
    Expert tip

    This might be an issue with the file location in the Spark submit command. Try it with

    spark-submit --master spark://master:7077 \ {file location}

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java.lang.ClassNotFoundException: org.apache.spark.sql.DataFrame	at	at java.lang.ClassLoader.loadClass(	at java.lang.ClassLoader.loadClass(	at java.lang.Class.getDeclaredMethods0(Native Method)	at java.lang.Class.privateGetDeclaredMethods(	at java.lang.Class.privateGetMethodRecursive(	at java.lang.Class.getMethod0(	at java.lang.Class.getMethod(	at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:713)	at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185)	at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210)	at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124)	at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)