[jira] [Created] (MESOS-7024) Update the allocator to handle hierarchical roles.

["Benjamin Mahler (JIRA)" <ji...@apache.org>]

Benjamin Mahler created MESOS-7024:
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             Summary: Update the allocator to handle hierarchical roles.
                 Key: MESOS-7024
                 URL: https://issues.apache.org/jira/browse/MESOS-7024
             Project: Mesos
          Issue Type: Task
          Components: allocation
            Reporter: Benjamin Mahler


With the addition of hierarchical roles, the allocator needs to be updated to perform a tree traversal to perform fair sharing allocation.

The quota implementation will not be heavily impacted since, as discussed above, we will only allocate based on role quota (the leaf nodes). The role expression (non-leaf nodes, e.g. /foo/*) will have no impact on quota allocation for now.

The allocator will expect roles to be specified in the new format, which means the master will need to translate roles accordingly when communicating with the allocator.



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