Eric Yang created YARN-8523:

             Summary: Interactive docker shell
                 Key: YARN-8523
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Eric Yang

Some application might require interactive unix commands executions to carry 
out operations.  Container-executor can interface with docker exec to debug or 
analyze docker containers while the application is running.  It would be nice 
to support an API to invoke docker exec to perform unix commands and report 
back the output to application master.  Application master can distribute and 
aggregate execution of the commands to record in application master log file.

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