[MESOS-3424] Support fetching AppC images into the store

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.28.0
• Component/s: containerization
• Labels: mesosphere twitter unified-containerizer-mvp
• Epic Link: Unified Container
• Sprint: Mesosphere Sprint 29
• Story Points: 5
• Assignee: Jojy Varghese
• Reporter: Vinod Kone
• Shepherd: Jie Yu
• Created: 14/Sep/15 18:39
• Updated: 26/Nov/18 12:20
• Resolved: 26/Nov/18 12:20

Description

So far AppC store is read only and depends on out of band mechanisms to get the images. We need to design a way to support fetching in a native way.

As commented on MESOS-2824:
It's unacceptable to have either have:

• the slave to be blocked for extended period of time (minutes) which delays the communication between the executor and scheduler, or
• the first task that uses this image to be blocked for a long time to wait for the container image to be ready.

The solution needs to enable the operator to prefetch a list of "preferred images" without introducing the above problems.

Issue Links

• is blocked by: MESOS-3193 Implement AppC image discovery.
• relates to: MESOS-2824 Support pre-fetching images