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https://issues.apache.org/jira/browse/YARN-8209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16459733#comment-16459733
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Jim Brennan commented on YARN-8209:
-----------------------------------
[~ebadger], a few comments:
As [~eyang] said, invoke_docker_command() is failing to free docker_binary,
docker_command_binary, and args if execve succeeds. Looks like this might have
been copy/pasted from run_docker, which has the same problem.
It seems inefficient that in main, we are copying all of the arguments for
inspect docker container into a flat string separated by spaces, only to pull
it apart again in invoke_docker_command for the call to execve. Could pass a
char **argv and int argc instead.
> NPE in DeletionService
> ----------------------
>
> Key: YARN-8209
> URL: https://issues.apache.org/jira/browse/YARN-8209
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Chandni Singh
> Assignee: Eric Badger
> Priority: Major
> Attachments: YARN-8209.001.patch, YARN-8209.002.patch
>
>
> {code:java}
> 2018-04-25 23:38:41,039 WARN concurrent.ExecutorHelper
> (ExecutorHelper.java:logThrowableFromAfterExecute(63)) - Caught exception in
> thread DeletionService #1:
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.docker.DockerClient.writeCommandToTempFile(DockerClient.java:109)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.docker.DockerCommandExecutor.executeDockerCommand(DockerCommandExecutor.java:85)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.docker.DockerCommandExecutor.executeStatusCommand(DockerCommandExecutor.java:192)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.docker.DockerCommandExecutor.getContainerStatus(DockerCommandExecutor.java:128)
> at
> org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor.removeDockerContainer(LinuxContainerExecutor.java:935)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.deletion.task.DockerContainerDeletionTask.run(DockerContainerDeletionTask.java:61)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748){code}
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