Jie Yu created MESOS-8088:
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Summary: Introduce Lamport timestamp for offer operations.
Key: MESOS-8088
URL: https://issues.apache.org/jira/browse/MESOS-8088
Project: Mesos
Issue Type: Task
Reporter: Jie Yu
We need to use Lamport clock (https://en.wikipedia.org/wiki/Lamport_timestamps)
to establish partial ordering between offer operation, and the resources the
operation is operating on.
It is used to establish happens before relations so that RPs can reject those
operations that applies to a stale snapshot of the resources due to speculation
failures.
See more details in this doc:
https://docs.google.com/document/d/1RrrLVATZUyaURpEOeGjgxA6ccshuLo94G678IbL-Yco/edit#
Given that the Lamport clock needs to be transferred between agent and masters,
it needs to be serialized to protobuf. We probably needs to define the
following methods for it:
```
merge(...); // Take a max between the two.
increment();
operation<(...);
copy and assignment operator
```
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