我有一个Flink应用程序，该应用程序使用来自Kafka群集的数据并运行SQL数据转换。我正在EMR上运行此应用程序，并且当我使用Java -jar选项运行时，该应用程序按预期运行。
但是，当使用命令flink运行yarn时，运行-m yarn-cluster -yn 2 -yjm 1g -ytm 2g JarFileName arg1 arg2
应用程序失败，并出现以下堆栈跟踪。
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)
at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)
... 36 more
Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot instantiate user function.
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:239)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:104)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:267)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.StreamCorruptedException: unexpected block data
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1586)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2286)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2166)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2068)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1572)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2286)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2166)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2068)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1572)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2286)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2166)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2068)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1572)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2286)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2210)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2068)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1572)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:430)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:566)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:552)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:540)
at org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:501)
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:224)
更新：
此问题已解决。根本原因是Flink的类加载器。我们最初使用的是Springboot maven插件。我们将其更改为maven shade plugin，并解决了该问题。