Sidharta Seethana created YARN-3611:

             Summary: Support Docker Containers In LinuxContainerExecutor
                 Key: YARN-3611
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn
            Reporter: Sidharta Seethana
            Assignee: Sidharta Seethana

Support Docker Containers In LinuxContainerExecutor

LinuxContainerExecutor provides useful functionality today with respect to 
localization, cgroups based resource management and isolation for CPU, network, 
disk etc. as well as security with a well-defined mechanism to execute 
privileged operations using the container-executor utility.  Bringing docker 
support to LinuxContainerExecutor lets us use all of this functionality when 
running docker containers under YARN, while not requiring users and admins to 
configure and use a different ContainerExecutor. 

There are several aspects here that need to be worked through :

* Mechanism(s) to let clients request docker-specific functionality - we could 
initially implement this via environment variables without impacting the client 
* Security - both docker daemon as well as application
* Docker image localization
* Running a docker container via container-executor as a specified user
* “Isolate” the docker container in terms of CPU/network/disk/etc
* Communicating with and/or signaling the running container (ensure correct pid 
* Figure out workarounds for certain performance-sensitive scenarios like HDFS 
short-circuit reads 
* All of these need to be achieved without changing the current behavior of 

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