[MESOS-9656] Empty reservations and unresrvations fail with confusing error message

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Labels: reservations
• Assignee: Unassigned
• Reporter: Benno Evers
• Created: 15/Mar/19 15:23
• Updated: 15/Mar/19 15:34

Description

When attempting to apply a reserve operation containing empty resources, the operation fails during validation with the error message:

W0315 11:17:37.687129 25931 master.cpp:2292] Dropping RESERVE operation from framework e4cd5335-8af5-4db2-b6f8-07adbef1c6a3-0000 (Operation Feedback Framework (C++)): Invalid resources: The resources have multiple resource providers: 

The same happens when trying to `UNRESERVE_RESOURCES` without specifying resources, e.g. when using the operator api.

Instead, the error message should say that the reservation does not contain any resources.