A few questions

[Gunho Lee <gu...@eecs.berkeley.edu>]

1. Is there any command to kill specific framework or task, especially 
for long-running frameworks/tasks?
Currently I am just killing/relaunching mesos slave.

2. I'd like to ask what would be the best way to pass some arguments to 
executors. For example, I want to let an executor know the list of 
hostnames of its siblings (tasks for the same framework). Or, just one 
of them would be good enough. (For example, the first task is to be 
assigned as a master, and its location should be informed to other tasks 
when then launch.) One trick I am using right now is to do that in the 
scheduler (similar to what MPI framework does), but it looks like a hack.

Re: A few questions

[Charles Reiss <ch...@eecs.berkeley.edu>]

On 12/19/11 11:54 AM, Gunho Lee wrote:
> 1. Is there any command to kill specific framework or task, especially
> for long-running frameworks/tasks?
> Currently I am just killing/relaunching mesos slave.

There's no command-line or similar tool. This would be a good JIRA issue
(and probably not very hard).

> 2. I'd like to ask what would be the best way to pass some arguments to
> executors. For example, I want to let an executor know the list of
> hostnames of its siblings (tasks for the same framework). Or, just one
> of them would be good enough. (For example, the first task is to be
> assigned as a master, and its location should be informed to other tasks
> when then launch.) One trick I am using right now is to do that in the
> scheduler (similar to what MPI framework does), but it looks like a hack.

You can communicate it from the scheduler to executors using framework
messages, or as part of the TaskDescription, or as part of the
ExecutorInfo you pass when you launch a task.

- Charles