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https://issues.apache.org/jira/browse/YARN-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14592122#comment-14592122
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Sidharta Seethana commented on YARN-2194:
-----------------------------------------
[~ywskycn] , I see the following in the patch :
{code}
+++
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/privileged/PrivilegedOperationExecutor.java
@@ -30,6 +30,7 @@
import org.apache.hadoop.util.Shell.ExitCodeException;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor;
{code}
Please note that {{LinuxContainerExecutor}} already has a dependency on
{{PrivilegedOperation}} and indirectly on {{PrivilegedOperationExecutor}} ( via
resource handlers ). It doesn't make sense to add a dependency on
{{LinuxContainerExecutor}} here - it makes it a circular dependency of sorts.
{{PrivilegedOperationExecutor}} is a wrapper around the container-executor
binary and the idea is move all invocations of container-executor to use this
mechanism. I recommend instead adding this constant in {{PrivilegedOperation}}
or {{PrivilegedOperationExecutor}} as mentioned before.
> Cgroups cease to work in RHEL7
> ------------------------------
>
> Key: YARN-2194
> URL: https://issues.apache.org/jira/browse/YARN-2194
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.7.0
> Reporter: Wei Yan
> Assignee: Wei Yan
> Priority: Critical
> Attachments: YARN-2194-1.patch, YARN-2194-2.patch, YARN-2194-3.patch,
> YARN-2194-4.patch, YARN-2194-5.patch
>
>
> In RHEL7, the CPU controller is named "cpu,cpuacct". The comma in the
> controller name leads to container launch failure.
> RHEL7 deprecates libcgroup and recommends the user of systemd. However,
> systemd has certain shortcomings as identified in this JIRA (see comments).
> This JIRA only fixes the failure, and doesn't try to use systemd.
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