Neil Conway created MESOS-6785:
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Summary: Prevent duplicate task IDs for partition-aware frameworks
Key: MESOS-6785
URL: https://issues.apache.org/jira/browse/MESOS-6785
Project: Mesos
Issue Type: Bug
Components: master
Reporter: Neil Conway
Assignee: Neil Conway
Duplicate task IDs might occur in two situations with partition-aware
frameworks:
# The agent is partitioned and task X on that agent is marked unreachable. The
framework that proceeds to attempt to launch a new task with id X; the task
launch should fail.
# Same as above except that the master fails over before the task launch
occurs. Because the master doesn't know that there is already a task id X on
the partitioned agent, it cannot reasonably fail the task launch. Hence, when
the agent re-registers, we probably need to kill the task with id X on the
re-registering agent. This is unfortunate, but I'm not sure I see a feasible
alternative.
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