[MESOS-3077] Registry recovery does not recover the maintenance object.

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: master, replicated log
• Labels: mesosphere
• Target Version/s: 0.24.0
• Epic Link: Maintenance
• Story Points: 5
• Assignee: Joseph Wu
• Reporter: Joseph Wu
• Shepherd: Benjamin Hindman
• Created: 17/Jul/15 21:21
• Updated: 26/Nov/18 12:32
• Resolved: 26/Nov/18 12:32

Description

Persisted info is fetched from the registry when a master is elected or after failover. Currently, this process involves 3 steps:

• Fetch the "registry".
• Start an operation to add the new master to the fetched registry.
• Check the success of the operation and finish recovering.
  These methods can be found in src/master/registrar.cpp

  RegistrarProcess::recover, ::_recover, ::__recover

Since the maintenance schedule is stored in a separate key, the recover process must also fetch a new "maintenance" object. This object needs to be passed along to the master along with the existing "registry" object.

Possible test(s):

• src/tests/registrar_tests.cpp
  • Change the "Recovery" test to include checks for the new object.

Issue Links

• blocks: MESOS-3045 Maintenance information is not populated in case of failover
• blocks: MESOS-3069 Registry operations do not exist for manipulating maintanence schedules
• Is contained by: MESOS-2075 Add maintenance information to the replicated registry.