This epic covers three related tasks:
1. Allowing partitioned agents to reregister with the master. This allows frameworks to control how tasks running on partitioned agents should be dealt with.
2. Replacing the TASK_LOST task state with a set of more granular states with more precise semantics: UNREACHABLE, DROPPED, UNKNOWN, GONE, and GONE_BY_OPERATOR.
3. Allow frameworks to be informed when a task that was running on a partitioned agent has been terminated (GONE and GONE_BY_OPERATOR states).
These new behaviors will be guarded by the PARTITION_AWARE framework capability.
This epic contains the features that landed in Mesos 1.1; remaining work is in MESOS-6394.