Kevin Klues created MESOS-5178:
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Summary: Add logic to validate for non-fractional GPU requests in
the master
Key: MESOS-5178
URL: https://issues.apache.org/jira/browse/MESOS-5178
Project: Mesos
Issue Type: Task
Reporter: Kevin Klues
Assignee: Kevin Klues
We should not put this logic directly into the 'Resources::validate()'
function.
The primary reason is that the existing 'Resources::validate()' function
doesn't consider the semantics of any particular resource when performing its
validation (it only makes sure that the fields in the 'Resource' protobuf
message are correctly formed). Since a fractional 'gpus' resources is actually
well-formed (and only semantically incorrect), we should push this validation
logic up into the master.
Moreover, the existing logic to construct a 'Resources' object from a
'RepeatedPtrField<Resource>' silently drops any resources that don't pass
'Resources::validate()'. This means that if we were to push the non-fractional
'gpus' validation into 'Resources::validate()', the 'gpus' resources would just
be silently dropped rather than causing a TASK_ERROR in the master. This is
obviously *not* the desired behaviour.
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