Jeff Zhang created YARN-1754:
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Summary: Container process is not really killed
Key: YARN-1754
URL: https://issues.apache.org/jira/browse/YARN-1754
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Affects Versions: 2.2.0
Environment: Mac
Reporter: Jeff Zhang
I test the following distributed shell example on my mac:
hadoop jar
share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar -appname
shell -jar
share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.2.0.jar
-shell_command=sleep -shell_args=1000000000 -num_containers=1
And it will start 2 process for one container, one is the shell process,
another is the real command I execute ( here is "sleep 1000000000").
And then I kill this application by running command "yarn application -kill
app_id"
it will kill the shell process, but won't kill the real command process. The
reason is that yarn use kill command to kill process, but it won't kill its
child process. use pkill could resolve this issue.
I also verify this case on centos which is the same as mac. IMHO, it is a very
important case which will make the resource usage inconsistency, and have
potential security problem.
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