Benjamin Bannier created MESOS-8222:
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Summary: Add resource versions to RunTaskMessage
Key: MESOS-8222
URL: https://issues.apache.org/jira/browse/MESOS-8222
Project: Mesos
Issue Type: Task
Components: agent, master
Reporter: Benjamin Bannier
To support speculative application of certain offer operations we have added
resource versions to offer operation messages. This permits checking
compatibility of master and agent state before applying operations.
Launch operations are not modelled with offer operation messages, but instead
with {{RunTaskMessage}}. In order to provide the same consistency guarantees we
need to add resource versions to {{RunTaskMessage}} as well. Otherwise we would
only rely on resource containment checks in the agent to catch inconsistencies;
these can be unreliable as there is no guarantee that the matched agent
resource is unique (e.g., with two {{RESERVE}} operations on similar resorces
triggered on the same agent and one of these failing, the other succeeding, we
would end up potentially sending one framework a success status and the other a
failed one, but would not do anything the make sure the speculative operation
application matches the resources belonging to the sent offer operation status
update).
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