Spark-1.6.3-源码---LogQUery运行错误_spark logquery错误-优快云博客

本文记录了在尝试运行Spark1.6.3版本时遇到的NoClassDefFoundError异常，详细展示了错误日志，涉及NettyRpcEnv初始化失败及Channel类未找到的问题。通过分析，指出Netty库缺失可能是导致此问题的原因。

2019-07-25 22:54:49,479 INFO  [main] spark.SparkContext (Logging.scala:logInfo(58)) - Running Spark version 1.6.3
2019-07-25 22:54:50,759 INFO  [main] spark.SecurityManager (Logging.scala:logInfo(58)) - Changing view acls to: root
2019-07-25 22:54:50,759 INFO  [main] spark.SecurityManager (Logging.scala:logInfo(58)) - Changing modify acls to: root
2019-07-25 22:54:50,760 INFO  [main] spark.SecurityManager (Logging.scala:logInfo(58)) - SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(root); users with modify permissions: Set(root)
Exception in thread "main" java.lang.NoClassDefFoundError: io/netty/channel/Channel
	at org.apache.spark.rpc.netty.NettyRpcEnv.<init>(NettyRpcEnv.scala:65)
	at org.apache.spark.rpc.netty.NettyRpcEnvFactory.create(NettyRpcEnv.scala:447)
	at org.apache.spark.rpc.RpcEnv$.create(RpcEnv.scala:53)
	at org.apache.spark.SparkEnv$.create(SparkEnv.scala:253)
	at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:193)
	at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:288)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:457)
	at org.apache.spark.examples.LogQuery$.main(LogQuery.scala:48)
	at org.apache.spark.examples.LogQuery.main(LogQuery.scala)
Caused by: java.lang.ClassNotFoundException: io.netty.channel.Channel
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 9 more

Process finished with exit code 1

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