[jira] [Commented] (YARN-4048) Linux kernel panic under strict CPU limits

["Naganarasimha G R (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-4048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009343#comment-15009343 ] 

Naganarasimha G R commented on YARN-4048:
-----------------------------------------

Hi [~ccondit] 
We too have faced this many times and as alternative where OS cannot be upgraded we have CPU isolation based on CPUset which is not same as existing which based on period & quota but atleast will ensure the cpu usage of the Node doesnt exceed the number of cores assigned for YARN containers.

> Linux kernel panic under strict CPU limits
> ------------------------------------------
>
>                 Key: YARN-4048
>                 URL: https://issues.apache.org/jira/browse/YARN-4048
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.7.1
>            Reporter: Chengbing Liu
>            Priority: Critical
>         Attachments: panic.png
>
>
> With YARN-2440 and YARN-2531, we have seen some kernel panics happening under heavy pressure. Even with YARN-2809, it still panics.
> We are using CentOS 6.5, hadoop 2.5.0-cdh5.2.0 with the above patches. I guess the latest version also has the same issue.



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