I use Spark 1.6.2 with Java, and after I set spark.eventLog.enabled=true spark crashes with this exception:
Exception in thread "main" java.lang.NoClassDefFoundError: org/json4s/jackson/JsonMethods$ at org.apache.spark.scheduler.EventLoggingListener$.initEventLog(EventLoggingListener.scala:257) at org.apache.spark.scheduler.EventLoggingListener.start(EventLoggingListener.scala:124) at org.apache.spark.SparkContext.<init>(SparkContext.scala:519) at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:58) at com.uhana.stream.UhanaStreamingContext.<init>(UhanaStreamingContext.java:165) at com.uhana.stream.UhanaStreamingContext.<init>(UhanaStreamingContext.java:23) at com.uhana.stream.UhanaStreamingContext$Builder.build(UhanaStreamingContext.java:159) at com.uhana.stream.app.StreamingMain.main(StreamingMain.java:41) Caused by: java.lang.ClassNotFoundException: org.json4s.jackson.JsonMethods$ at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 8 more I downloaded some jars for json4s, but I'm not sure where they should go. Thanks, -cjosephson