Vinod Kone created MESOS-305:
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Summary: Inform the framework about a master failover
Key: MESOS-305
URL: https://issues.apache.org/jira/browse/MESOS-305
Project: Mesos
Issue Type: Improvement
Reporter: Vinod Kone
With the recent changes in the master detecter code, we no longer send
'NoMasterDetected' to the scheduler driver, which in turn means the
'disconnected' scheduler callback is never invoked.
At Twitter this manifested as a spew of LOST tasks whenever a master failover
happens. This is because the scheduler holds on to offers for a while and never
knows about the invalidity of offers, until after tasks are launched. Though
this is a race, it is ideal to minimize this window as much as possible by
informing the scheduler of the master failover.
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