YARN: get containers by applicationId

Question

I'd like to list the nodes on which the containers are running for a particular MR job.
I only have the application_id.
Is it possible to do it with Hadoop REST API and/or through command line?

Answer 1

This can be done using the yarn command.

1. Run yarn applicationattempt -list <Application Id> to get an app attempt id
2. Run yarn container -list <Application Attempt Id> to get the container ids
3. Run yarn container -status <Container Id> to get the host for any particular container.

If you want this in a bash script or want to get every host for an application with a large number of containers you will probably want to parse out the attempt/container id and host, but this is at least a start.