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https://issues.apache.org/jira/browse/YARN-8209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16461207#comment-16461207
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Shane Kumpf commented on YARN-8209:
-----------------------------------
Thanks for the patch, [~ebadger]! I tested the 004 patch and it fixes the
issue. It would be good to address the findbugs and checkstyle issues here. The
rest of the comments could be deferred until the follow on patch if needed. The
failed test seems unrelated.
# javadoc is missing for {{DockerCommand#preparePrivilegedOperation}}
# The formatting change in {{DockerCommandExecutor#executeDockerCommand}}
doesn't look to be necessary.
# Only {{DockerInspectCommand#getContainerStatus}} is addressed for {{docker
inspect}}, is the plan to handle {{DockerInspectCommand#getIpAndHost}} in the
follow on? It would be good to have consistency for a given docker command.
# I'm not sure if the {{containerId}} field is needed in
{{DockerInspectCommand}} or {{DockerRmCommand}}, {{containerName}} seems like
it would still be sufficient. Getting rid of it would also fix the findbugs
warning.
> 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: Critical
> Attachments: YARN-8209.001.patch, YARN-8209.002.patch,
> YARN-8209.003.patch, YARN-8209.004.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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