After applying this patch, I added following config i= n yarn-site.xml:
=C2=A0 <property>
=C2=A0=C2=A0=C2=A0 <name&= gt;yarn.nodemanager.container-executor.class</name>
=C2=A0=C2=A0 &= lt;value>org.apache.hadoop.yarn.server.nodemanager.DockerContainerExecut= or</value>
=C2=A0 </property>

Then I can start NodeManager with enabling = DockerContainerExecutor. But failed to execute a simple mr job, and the exc= eption is 'Cannot connect to the Docker daemon. Is 'docker -d= 9; running on this host?'. Below are the full exception info and an= y body could give me some hints?

14/08/12 20:06:14 INFO mapreduce.Job: Job job_1407899030909_0002 runnin= g in uber mode : false
14/08/12 20:06:14 INFO mapreduce.Job:=C2=A0 map 0= % reduce 0%
14/08/12 20:06:14 INFO mapreduce.Job: Job job_1407899030909_= 0002 failed with state FAILED due to: Application application_1407899030909= _0002=C2=A0=C2=A0=C2=A0=C2=A0 failed 2 times due to AM Container for appatt= empt_1407899030909_0002_000002 exited with=C2=A0 exitCode: 1 due to: Except= ion from container-launc=C2=A0=C2=A0=C2=A0 h:
org.apache.hadoop.util.Shell$ExitCodeException: Warning: '-rm' is d= eprecated, it will be replaced by '--rm' soon. See usage.
Warnin= g: '-name' is deprecated, it will be replaced by '--name' s= oon. See usage.
2014/08/12 20:06:13 Cannot connect to the Docker daemon. Is 'docker -d&= #39; running on this host?

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 at org.apache.hadoop.util.Shell.runCommand(Shell.java:444)
=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at org.apache.hadoop.util.Shell.run(Shell= .java:359)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at org.apache.hadoop.util.Shell$= ShellCommandExecutor.execute(Shell.java:569)
=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 at org.apache.hadoop.yarn.server.nodemanager.DockerContaine= rExecutor.launchContainer(DockerContainerExecutor.java:174)
=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at org.apache.hadoop.yarn.server.nodemanager= .containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:319) =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at org.apache.hadoop.yarn.server= .nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch= .java:81)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at java.util.concur= rent.FutureTask$Sync.innerRun(FutureTask.java:314)
=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 at java.util.concurrent.FutureTask.run(FutureTask.jav= a:149)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 at java.util.concurrent.ThreadPo= olExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 at java.util.concurrent.ThreadPoolExecutor$Work= er.run(ThreadPoolExecutor.java:919)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 at java.lang.Thread.run(Thread.java:738)

Thanks!

2014-08-12 2:18 GMT-07:00 sam liu <samliuhadoop@gmail.c= om>:

Hi= Experts,

I am very interesting that Hadoop could work with Do= cker and doing some trial on patch of YARN-1964.

I applied patch yarn-1964-branch-2.2.0-docker.patch of jira = YARN-1964 on branch 2.2 and am going to install a Hadoop cluster using the = new generated tarball including the patch.

Then, I think I can use DockerContainerExecutor, but I do not know much= details on the usage and have following questions:

1. Afte= r installation, What's the detailed config steps to adopt DockerContain= erExecutor?

2. How to verify whether a MR task is really launched in D= ocker container not Yarn container?

3. Which hadoop bra= nch will officially include Docker support?

Thanks a lot!<= br>