Resource changed on src filesystem

Full exception text: This can happen when some process overwrites application files in HDFS application directory while app is running. An example of the situation: You start app instance_1, which stores the distribution files in the hdfs://tmp/app folder. After a while you start the second instance_2 which stores the distribution files in the same HDFS […]

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How to immediately terminate the Spring Boot Yarn container with an error

Imagine an error or exception occurs while running the Spring Boot Yarn container, and we need to kill container from itself and return an error code. You can use @OnContainerStart annotation as mentioned in this article: https://mchesnavsky.tech/how-to-set-up-exit-code-on-spring-boot-yarn-container. But if we need to stop the container immediately, we just need to call: – where parameter is […]

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Spring Boot Yarn onContainerFailed method diagnostics message

Suppose that we have an SBY application, which includes AppMaster and Container. When the container falls due to an exception, we need to send exception text to the AppMaster. When the container falls, the AppMaster’s onContainerFailed() method is automatically called: The method is in the StaticEventingAppmaster class. Your AppMaster must be inherited from it. We […]

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