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https://issues.apache.org/jira/browse/MESOS-2335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gavin updated MESOS-2335:
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Comment: was deleted
(was: www.rtat.net)
> Mesos Lifecycle Modules
> -----------------------
>
> Key: MESOS-2335
> URL: https://issues.apache.org/jira/browse/MESOS-2335
> Project: Mesos
> Issue Type: Improvement
> Components: agent, master, modules
> Reporter: Bernd Mathiske
> Assignee: Till Toenshoff
> Priority: Major
> Labels: features
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> A new kind of module that receives callbacks at significant life cycle events
> of its host libprocess process. Typically the latter is a Mesos slave or
> master and the life time of the libprocess process coincides with the
> underlying OS process.
> h4. Motivation and Use Cases
> We want to add customized and experimental capabilities that concern the life
> time of Mesos components without protruding into Mesos source code and
> without creating new build process dependencies for everybody.
> Example use cases:
> 1. A slave or master life cycle module that gathers fail-over incidents and
> reports summaries thereof to a remote data sink.
> 2. A slave module that observes host computer metrics and correlates these
> with task activity. This can be used to find resources leaks and to prevent,
> respectively guide, oversubscription.
> 3. Upgrades and provisioning that require shutdown and restart.
> h4. Specifics
> The specific life cycle events that we want to get notified about and want to
> be able to act upon are:
> - Process is spawning/initializing
> - Process is terminating/finalizing
> In all these cases, a reference to the process is passed as a parameter,
> giving the module access for inspection and reaction.
> h4. Module Classification
> Unlike other named modules, a life cycle module does not directly replace or
> provide essential Mesos functionality (such as an Isolator module does).
> Unlike a decorator module it does not directly add or inject data into Mesos
> core either.
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