[jira] [Comment Edited] (MESOS-1718) Command executor can overcommit the slave.

["Klaus Ma (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-1718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15020884#comment-15020884 ] 

Klaus Ma edited comment on MESOS-1718 at 11/22/15 2:02 PM:
-----------------------------------------------------------

Thanks for your input :). Also agree to ask master to setup TaskInfo & its ExecutorInfo; the info will send to master when register & re-register.

For executor's resource, if we used additional resources, it's hard to decide which kind of resources should be used: revocable or non-revocable; so I'm thinking to move some of resources from task to executor. As a result, command line executor's resource will be consistent with task's, and will not consume more resources.


was (Author: klaus1982):
Thanks for your input :). Also agree to ask master to setup TaskInfo & its ExecutorInfo; the info will send to master when register & re-register.

> Command executor can overcommit the slave.
> ------------------------------------------
>
>                 Key: MESOS-1718
>                 URL: https://issues.apache.org/jira/browse/MESOS-1718
>             Project: Mesos
>          Issue Type: Bug
>          Components: slave
>            Reporter: Benjamin Mahler
>            Assignee: Ian Downes
>
> Currently we give a small amount of resources to the command executor, in addition to resources used by the command task:
> https://github.com/apache/mesos/blob/0.20.0-rc1/src/slave/slave.cpp#L2448
> {code: title=}
> ExecutorInfo Slave::getExecutorInfo(
>     const FrameworkID& frameworkId,
>     const TaskInfo& task)
> {
>   ...
>     // Add an allowance for the command executor. This does lead to a
>     // small overcommit of resources.
>     executor.mutable_resources()->MergeFrom(
>         Resources::parse(
>           "cpus:" + stringify(DEFAULT_EXECUTOR_CPUS) + ";" +
>           "mem:" + stringify(DEFAULT_EXECUTOR_MEM.megabytes())).get());
>   ...
> }
> {code}
> This leads to an overcommit of the slave. Ideally, for command tasks we can "transfer" all of the task resources to the executor at the slave / isolation level.



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