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https://issues.apache.org/jira/browse/MESOS-175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Reiss resolved MESOS-175.
---------------------------------

    Resolution: Invalid

The current allocator code only makes offers when a periodic timer expires 
rather than trying to make immediately offer returned resources.
                
> Unused portions of offers are not immediately offered to another framework
> --------------------------------------------------------------------------
>
>                 Key: MESOS-175
>                 URL: https://issues.apache.org/jira/browse/MESOS-175
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Charles Reiss
>            Assignee: Charles Reiss
>            Priority: Minor
>
> When a framework returns an offer but does not use the entire offer, the 
> master calls allocator to make new allocations for that offer. Unfortunately, 
> it currently does so before removing the offer, so the current allocator will 
> not consider those resources free, and so the allocator will think it those 
> resources are not free. In practice, the resources will be offered on the 
> next timer tick, framework registration, or other event causing the slave to 
> be reconsidered for offers, so this is a relatively low impact issue.

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