Azkaban 执行任务时报这种错是什么原因呢？

[wanderlustLee]

大佬们帮忙看一下，求解答
2019/05/01 21:50:21.090 +0800 ERROR [ExecutorManager] [Azkaban] Rolling back executor assignment for execution id:5 azkaban.executor.ExecutorManagerException: java.io.IOException: executor became inactive before setting up the flow 5 at azkaban.executor.ExecutorApiGateway.callWithExecutionId(ExecutorApiGateway.java:80) at azkaban.executor.ExecutorApiGateway.callWithExecutable(ExecutorApiGateway.java:43) at azkaban.executor.ExecutorManager.dispatch(ExecutorManager.java:1116) at azkaban.executor.ExecutorManager.access$600(ExecutorManager.java:75) at azkaban.executor.ExecutorManager$QueueProcessorThread.selectExecutorAndDispatchFlow(ExecutorManager.java:1347) at azkaban.executor.ExecutorManager$QueueProcessorThread.processQueuedFlows(ExecutorManager.java:1319) at azkaban.executor.ExecutorManager$QueueProcessorThread.run(ExecutorManager.java:1257) Caused by: java.io.IOException: executor became inactive before setting up the flow 5 at azkaban.executor.ExecutorApiGateway.callForJsonObjectMap(ExecutorApiGateway.java:108) at azkaban.executor.ExecutorApiGateway.callWithExecutionId(ExecutorApiGateway.java:78) ... 6 more

[wanderlustLee]

主要是 azkaban.executor.ExecutorManagerException: java.io.IOException: executor became inactive before setting up the flow 5 at

[wanderlustLee]

找到是这个原因。有点看不懂，怎么解决呀。
2019/05/01 22:16:29.997 +0800 ERROR [ServerStatisticsServlet] [Azkaban] failed fetch system memory info, one or more files from the following list are missing - '/bin/bash','/bin/cat','/proc/loadavg'

[defunct9]

开 ssh，让我上去看看