[MESOS-469] Scheduler driver should call disconnected on master failover

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Assignee: Vinod Kone
• Reporter: Vinod Kone
• Created: 10/May/13 00:47
• Updated: 23/May/13 23:07
• Resolved: 23/May/13 23:07

Description

Currently the driver only calls disconnected() when it gets NoMasterDetected() message.

But during a master failover the driver typically only gets NewMasterDetected() and sets an internal variable 'connected = false'. Subsequent driver calls (launchTasks, killTask) are rejected by the driver until it re-registers with a master.

At Twitter, we have seen this window to be as large as ~5s. It would be nice to inform the scheduler that the driver is 'disconnected()' in this situation.