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https://issues.apache.org/jira/browse/YARN-9071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16707854#comment-16707854
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Chandni Singh commented on YARN-9071:
-------------------------------------

[~billie.rinaldi] [~eyang] could you please review patch 4.

With patch 4, I can see ip and host being fetched after reinit.
{code}
2018-12-03 13:30:07,024 INFO  container.ContainerImpl 
(ContainerImpl.java:handle(2114)) - Container 
container_e71_1543596052785_0023_01_000002 transitioned from 
REINITIALIZING_AWAITING_KILL to SCHEDULED

2018-12-03 13:30:07,025 INFO  monitor.ContainersMonitorImpl 
(ContainersMonitorImpl.java:onStopMonitoringContainer(934)) - Stopping 
resource-monitoring for container_e71_1543596052785_0023_01_000002

2018-12-03 13:30:07,045 INFO  container.ContainerImpl 
(ContainerImpl.java:handle(2114)) - Container 
container_e71_1543596052785_0023_01_000002 transitioned from SCHEDULED to 
RUNNING

2018-12-03 13:30:07,046 INFO  monitor.ContainersMonitorImpl 
(ContainersMonitorImpl.java:onStartMonitoringContainer(943)) - Starting 
resource-monitoring for container_e71_1543596052785_0023_01_000002

2018-12-03 13:30:12,320 INFO  runtime.DockerLinuxContainerRuntime 
(DockerLinuxContainerRuntime.java:getIpAndHost(1178)) - Docker inspect output 
for container_e71_1543596052785_0023_01_000002: ****

2018-12-03 13:30:12,320 INFO  monitor.ContainersMonitorImpl 
(ContainersMonitorImpl.java:initializeProcessTrees(567)) - 
container_e71_1543596052785_0023_01_000002's ip =****, and hostname = ****

 {code}

> NM and service AM don't have updated status for reinitialized containers
> ------------------------------------------------------------------------
>
>                 Key: YARN-9071
>                 URL: https://issues.apache.org/jira/browse/YARN-9071
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Billie Rinaldi
>            Assignee: Chandni Singh
>            Priority: Critical
>         Attachments: YARN-9071.001.patch, YARN-9071.002.patch, 
> YARN-9071.003.patch, YARN-9071.004.patch
>
>
> Container resource monitoring is not stopped during the reinitialization 
> process, and this prevents the NM from obtaining updated process tree 
> information when the container starts running again. I observed a 
> reinitialized container go from RUNNING to REINITIALIZING to 
> REINITIALIZING_AWAITING_KILL to SCHEDULED to RUNNING. Container monitoring 
> was then started for a second time, but since the trackingContainers entry 
> had already been initialized for the container, ContainersMonitor skipped 
> finding the new PID and IP for the container. A possible solution would be to 
> stop the container monitoring in the reinitialization process so that the 
> process tree information would be initialized properly when monitoring is 
> restarted. When the same container was stopped by the NM later, the NM did 
> not kill the container, and the service AM received an unexpected event (stop 
> at reinitializing).



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