我正在创建一个工作流程编辑器。数据位于s3中，工作流调用一个简单的配置单元脚本。我在查询编辑器中测试了配置单元脚本，它运行良好。运行工作流时出现以下错误：

Error starting action [MountFilesToHive]. ErrorType [ERROR], ErrorCode [RuntimeException], Message [RuntimeException: java.lang.ClassNotFoundException: Class com.amazon.ws.emr.hadoop.fs.EmrFileSystem not found]
org.apache.oozie.action.ActionExecutorException: RuntimeException: java.lang.ClassNotFoundException: Class com.amazon.ws.emr.hadoop.fs.EmrFileSystem not found
    at org.apache.oozie.action.ActionExecutor.convertException(ActionExecutor.java:445)
    at org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:1132)
    at org.apache.oozie.action.hadoop.JavaActionExecutor.start(JavaActionExecutor.java:1286)
    at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:250)
    at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:64)
    at org.apache.oozie.command.XCommand.call(XCommand.java:286)
    at org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:321)
    at org.apache.oozie.service.CallableQueueService$CompositeCallable.call(CallableQueueService.java:250)
    at org.apache.oozie.service.CallableQueueService$CallableWrapper.run(CallableQueueService.java:175)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)

我们非常感谢任何帮助解决这个问题的人。