我刚开始眨眼。我写了下面的代码并得到了 ＆＃34; DataSource的输出导致错误：无法读取用户代码包装＆＃34;错误
我做错了什么？
版本：Flink v 0.9.1（hadoop 1）不使用hadoop：本地执行 shell：scala shell
代码：
val env = ExecutionEnvironment.getExecutionEnvironment
val text = env.readTextFile("/home/ashish/Downloads/spark/synop.201501.csv"
val data_split = text.flatMap{_.split(';')}
data_split.first(3).print()
注意：输入文件使用＆＃39;;＆＃39;作为分遣者
错误：
Scala-Flink> val data_split = text.flatMap{_.split(';')}
data_split: org.apache.flink.api.scala.DataSet[String] = org.apache.flink.api.scala.DataSet@60f70249
Scala-Flink> data_split.first(3).print()
09/24/2015 09:20:14 Job execution switched to status RUNNING.
09/24/2015 09:20:14 CHAIN DataSource (at $line26.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:14) (org.apache.flink.api.java.io.TextInputFormat)) -> FlatMap (FlatMap at $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:15))(1/1) switched to SCHEDULED
09/24/2015 09:20:14 CHAIN DataSource (at $line26.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:14) (org.apache.flink.api.java.io.TextInputFormat)) -> FlatMap (FlatMap at $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:15))(1/1) switched to DEPLOYING
09/24/2015 09:20:14 CHAIN DataSource (at $line26.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:14) (org.apache.flink.api.java.io.TextInputFormat)) -> FlatMap (FlatMap at $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:15))(1/1) switched to FAILED
java.lang.Exception: Call to registerInputOutput() of invokable failed
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:504)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: The initialization of the DataSource's outputs caused an error: Could not read the user code wrapper: $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$$anonfun$1
at org.apache.flink.runtime.operators.DataSourceTask.registerInputOutput(DataSourceTask.java:89)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:501)
... 1 more
Caused by: org.apache.flink.runtime.operators.util.CorruptConfigurationException: Could not read the user code wrapper: $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$$anonfun$1
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:284)
at org.apache.flink.runtime.operators.RegularPactTask.instantiateUserCode(RegularPactTask.java:1507)
at org.apache.flink.runtime.operators.chaining.ChainedFlatMapDriver.setup(ChainedFlatMapDriver.java:39)
at org.apache.flink.runtime.operators.chaining.ChainedDriver.setup(ChainedDriver.java:72)
at org.apache.flink.runtime.operators.RegularPactTask.initOutputs(RegularPactTask.java:1378)
at org.apache.flink.runtime.operators.DataSourceTask.initOutputs(DataSourceTask.java:290)
at org.apache.flink.runtime.operators.DataSourceTask.registerInputOutput(DataSourceTask.java:86)
... 2 more
Caused by: java.lang.ClassNotFoundException: $line27.$read$$iw$$iw$$iw$$iw$$iw$$iw$$anonfun$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:71)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:302)
at org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:264)
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:282)
... 8 more
09/24/2015 09:20:14 Job execution switched to status FAILING.
09/24/2015 09:20:14 CHAIN GroupReduce (GroupReduce at org.apache.flink.api.scala.DataSet.first(DataSet.scala:707)) -> FlatMap (collect())(1/1) switched to CANCELED
09/24/2015 09:20:14 DataSink (collect() sink)(1/1) switched to CANCELED
org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$receiveWithLogMessages$1.applyOrElse(JobManager.scala:314)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:43)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:29)
at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at org.apache.flink.runtime.ActorLogMessages$$anon$1.applyOrElse(ActorLogMessages.scala:29)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:92)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
at akka.dispatch.Mailbox.run(Mailbox.scala:221)
at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.Exception: Call to registerInputOutput() of invokable failed
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:504)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: The initialization of the DataSource's outputs caused an error: Could not read the user code wrapper: $anonfun$1
at org.apache.flink.runtime.operators.DataSourceTask.registerInputOutput(DataSourceTask.java:89)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:501)
... 1 more
Caused by: org.apache.flink.runtime.operators.util.CorruptConfigurationException: Could not read the user code wrapper: $anonfun$1
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:284)
at org.apache.flink.runtime.operators.RegularPactTask.instantiateUserCode(RegularPactTask.java:1507)
at org.apache.flink.runtime.operators.chaining.ChainedFlatMapDriver.setup(ChainedFlatMapDriver.java:39)
at org.apache.flink.runtime.operators.chaining.ChainedDriver.setup(ChainedDriver.java:72)
at org.apache.flink.runtime.operators.RegularPactTask.initOutputs(RegularPactTask.java:1378)
at org.apache.flink.runtime.operators.DataSourceTask.initOutputs(DataSourceTask.java:290)
at org.apache.flink.runtime.operators.DataSourceTask.registerInputOutput(DataSourceTask.java:86)
... 2 more
Caused by: java.lang.ClassNotFoundException: $anonfun$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:71)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:302)
at org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:264)
at org.apache.flink.runtime.operators.util.TaskConfig.getStubWrapper(TaskConfig.java:282)
... 8 more
答案 0 :(得分：2)
问题是第一行中的语句“val env = ExecutionEnvironment.getExecutionEnvironment”。
Scala Shell已经有一个ExecutionEnvironment，绑定到变量“env”，它被配置为正确加载Shell生成的类。
通过创建新的ExecutionEnvironment，您可以使用未正确设置的环境覆盖该预配置环境。