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Posted to yarn-issues@hadoop.apache.org by "Eric Badger (JIRA)" <ji...@apache.org> on 2018/05/02 22:35:12 UTC
[jira] [Updated] (YARN-3853) Add docker container runtime support
to LinuxContainterExecutor
[ https://issues.apache.org/jira/browse/YARN-3853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Badger updated YARN-3853:
------------------------------
Labels: Docker (was: )
> Add docker container runtime support to LinuxContainterExecutor
> ---------------------------------------------------------------
>
> Key: YARN-3853
> URL: https://issues.apache.org/jira/browse/YARN-3853
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Reporter: Sidharta Seethana
> Assignee: Sidharta Seethana
> Priority: Major
> Labels: Docker
> Fix For: 2.8.0, 3.0.0-alpha1
>
> Attachments: YARN-3853.001.patch, YARN-3853.002.patch
>
>
> Create a new DockerContainerRuntime that implements support for docker containers via container-executor. LinuxContainerExecutor should default to current behavior when launching containers but switch to docker when requested.
> Overview
> ===
> The current mechanism of launching/signaling containers is moved to its own (default) container runtime. In order to use docker container runtime a couple of environment variables have to be set. This will have to be revisited when we have a first class client side API to specify different container types and associated parameters. Using ‘pi’ as an example and using a custom docker image, this is how you could use the docker container runtime (LinuxContainerExecutor must be in use and the docker daemon needs to be running) :
> {code}
> export YARN_EXAMPLES_JAR=./share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar
> bin/yarn jar $YARN_EXAMPLES_JAR pi -Dmapreduce.map.env="YARN_CONTAINER_RUNTIME_TYPE=docker,YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=ashahab/hadoop-trunk" -Dyarn.app.mapreduce.am.env="YARN_CONTAINER_RUNTIME_TYPE=docker,YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=ashahab/hadoop-trunk" -Dmapreduce.reduce.env="YARN_CONTAINER_RUNTIME_TYPE=docker,YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=ashahab/hadoop-trunk" 4 1000
> {code}
>
> LinuxContainerExecutor can delegate to either runtime on a per container basis. If the docker container type is selected, LinuxContainerExecutor delegates to the DockerContainerRuntime which in turn uses docker support in the container-executor binary to launch/manage docker containers ( see YARN-3852 ) .
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