Neil Conway created MESOS-5396: ---------------------------------- Summary: After failover, master does not remove agents with same UPID Key: MESOS-5396 URL: https://issues.apache.org/jira/browse/MESOS-5396 Project: Mesos Issue Type: Bug Components: master Reporter: Neil Conway Assignee: Neil Conway
Scenario: * master fails over * an agent host is restarted; the agent attempts to register with Mesos using the same UPID as the previous agent instance; this means it will get a new agent ID * framework isn't notified about the status of the tasks on the *old* slaveID until the slave_reregister_timeout expires (10 mins) This isn't necessarily wrong, but it is suboptimal: when the slave attempts to register with the same UPID that was used by the previous slave instance, we know that a *reregistration* attempt for the old <UPID, slaveID> pair will never be seen. Hence we can declare the old slaveID to be gone-forever and notify frameworks appropriately, without waiting for the full slave_reregister_timeout to expire. Note that we already implement the proposed behavior for the case when the master does *not* failover (https://github.com/apache/mesos/blob/0.28.1/src/master/master.cpp#L4162-L4172). -- This message was sent by Atlassian JIRA (v6.3.4#6332)