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https://issues.apache.org/jira/browse/YARN-4377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jaromir Vanek updated YARN-4377:
--------------------------------
Environment: Debian 7 (was: Debian linux)
Priority: Minor (was: Critical)
Description:
Debug logs seem to be confusing when stating {{Sending signal to pid 20748 as
user _submitter_}}.
Nodemanager actually sends signals as a user {{yarn}} when using
{{DefaultContainerExecutor}}.
Complete nodemanager log:
{quote}
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Got pid 20748 for container container_1443786884805_2298_01_000003
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Sending signal to pid 20748 as user _submitter_ for container
container_1443786884805_2298_01_000003
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
signal 15 to pid 20748 as user _submitter_
2015-11-20 15:38:22,069 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Sent signal SIGTERM to pid 20748 as user _submitter_ for container
container_1443786884805_2298_01_000003, result=failed
2015-11-20 15:38:22,319 DEBUG
org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
signal 9 to pid 20748 as user _submitter_
{quote}
{{SIGTERM}} and following {{SIGKILL}} signals seem to be sent with the
*submitter* user permissions, but this is not true when container process is
running under *yarn* user by default.
What is the purpose of having submitter user in logs?
was:
It seems my processes in containers are not killed when the whole job is
killed. Containers will hang in {{KILLING}} state until forever.
The root of this problem is that signals sent to the container process are sent
with wrong user permissions.
>From the nodemanager log:
{quote}
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Got pid 20748 for container container_1443786884805_2298_01_000003
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Sending signal to pid 20748 as user _submitter_ for container
container_1443786884805_2298_01_000003
2015-11-20 15:38:22,063 DEBUG
org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
signal 15 to pid 20748 as user _submitter_
2015-11-20 15:38:22,069 DEBUG
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
Sent signal SIGTERM to pid 20748 as user _submitter_ for container
container_1443786884805_2298_01_000003, result=failed
2015-11-20 15:38:22,319 DEBUG
org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
signal 9 to pid 20748 as user _submitter_
{quote}
{{SIGTERM}} and following {{SIGKILL}} signals are sent with the *submitter*
user permissions, but the container process is running under *yarn* user by
default (when using {{DefaultContainerExecutor}} which is true in my case). The
result is that signals are ignored and container will run forever.
Am I doing something wrong or is it a bug?
Summary: Confusing logs when killing container process (was: Container
process not killed)
> Confusing logs when killing container process
> ---------------------------------------------
>
> Key: YARN-4377
> URL: https://issues.apache.org/jira/browse/YARN-4377
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.6.0
> Environment: Debian 7
> Reporter: Jaromir Vanek
> Priority: Minor
>
> Debug logs seem to be confusing when stating {{Sending signal to pid 20748 as
> user _submitter_}}.
> Nodemanager actually sends signals as a user {{yarn}} when using
> {{DefaultContainerExecutor}}.
> Complete nodemanager log:
> {quote}
> 2015-11-20 15:38:22,063 DEBUG
> org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
> Got pid 20748 for container container_1443786884805_2298_01_000003
> 2015-11-20 15:38:22,063 DEBUG
> org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
> Sending signal to pid 20748 as user _submitter_ for container
> container_1443786884805_2298_01_000003
> 2015-11-20 15:38:22,063 DEBUG
> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
> signal 15 to pid 20748 as user _submitter_
> 2015-11-20 15:38:22,069 DEBUG
> org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch:
> Sent signal SIGTERM to pid 20748 as user _submitter_ for container
> container_1443786884805_2298_01_000003, result=failed
> 2015-11-20 15:38:22,319 DEBUG
> org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor: Sending
> signal 9 to pid 20748 as user _submitter_
> {quote}
> {{SIGTERM}} and following {{SIGKILL}} signals seem to be sent with the
> *submitter* user permissions, but this is not true when container process is
> running under *yarn* user by default.
> What is the purpose of having submitter user in logs?
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