Gour Saha created SLIDER-868:
--------------------------------
Summary: Ability to put a Slider application on cruise control
Key: SLIDER-868
URL: https://issues.apache.org/jira/browse/SLIDER-868
Project: Slider
Issue Type: New Feature
Components: agent, app-package, appmaster
Affects Versions: Slider 0.70
Reporter: Gour Saha
You create a Slider application package, deploy it to a YARN cluster and manage
it. From the management perspective it is primarily flexing. Based on needs
(and the architecture of the application) you grow or shrink specific
components of your long running application from time to time. Of course you
can set some constraints like affinity, anti-affinity, and strict placement
(for data locality or other reasons). Some of these are handled very well by
Slider, others are best efforts.
However long running applications have an inherent need to be auto (or even
self) managed. This can be achieved by a custom management tool, interacting
with Slider client based on constant feedback on the health of the application
(metrics, alerts, etc.). This is primarily reactive management.
There is also proactive management, where the application owner is aware of the
usage pattern of the application over time. For example, a financial
application usage peaks between 8am to 4pm Mon to Sat (local time), and slows
down at other times. A tax application usage peaks for a few months prior to
April 15 and then slows down for several months. Certain healthcare
applications peak during flu season. You get the point!
It should be possible to declaratively define such an application usage
skyline, which can be fed to Slider and put an application on cruise control.
The specification can be modified and Slider should honor the modified version
for (reasonably acceptable) future state of the application.
This kind of feature would need support from YARN. There should be a way for
Slider to provide details to YARN for guaranteed future capacity planning.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
