[MESOS-8732] Use composing containerizer in some agent tests.

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.0
• Component/s: containerization
• Labels: containerizer mesosphere tests
• Epic Link: Composing containerizer improvements
• Sprint: Mesosphere Sprint 78, Mesosphere Sprint 79, Mesosphere Sprint 2018-20, Mesosphere Sprint 2018-21
• Story Points: 8
• Assignee: Andrei Budnik
• Reporter: Andrei Budnik
• Shepherd: Qian Zhang
• Created: 27/Mar/18 12:58
• Updated: 07/Aug/18 07:32
• Resolved: 07/Aug/18 07:32

Description

If we assign "docker,mesos" to the `containerizers` flag for an agent, then `ComposingContainerizer` will be used for many tests that do not specify `containerizers` flag. That's the goal of this task.

I tried to do that by adding `flags.containerizers = "docker,mesos";`, but it turned out that some tests are started to hang due to a paused clocks, while docker c'zer and docker library use libprocess clocks.

Issue Links

• is related to: MESOS-8828 Clock::advance can race with process::delay in tests.
• is related to: MESOS-8827 Eliminate calling of `await()` in the docker library.
• is related to: MESOS-8826 ReaperProcess depends on clock manipulation.
• relates to: MESOS-9139 Use composing containerizer by default in tests.