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https://issues.apache.org/jira/browse/UIMA-4260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jim Challenger resolved UIMA-4260.
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Resolution: Done
The implementation is done under UIMA-4275 as that is a pre-requisite and the
logic of the subject issue sort of falls out in the wash of 4275.
> DUCC: RM Leave unpreemptable requests pending if can't be filled
> ----------------------------------------------------------------
>
> Key: UIMA-4260
> URL: https://issues.apache.org/jira/browse/UIMA-4260
> Project: UIMA
> Issue Type: Improvement
> Components: DUCC
> Affects Versions: 1.1.0-Ducc
> Reporter: Jim Challenger
> Assignee: Jim Challenger
> Fix For: 2.0.0-Ducc
>
>
> RM should no longer refuse requests for un-fillable un-preemptable requests
> and instead leave them pending.
> Use cases:
> 1. Multi-step experiments that include a number of short unpreemptable steps
> issued in parallel. In this case it is known that all requests will be
> fulfilled within a reasonable time so they should not be refused.
> 2. Multiple cooperative schedulers. In some scenarios DUCC may be able to
> request additional resources based on load; for example, in some cloud
> configurations. In this case, we know the request may be fulfilled within a
> reasonable time.
>
> There are cases with no assurance that sufficient resources will be made
> available but in practice these are rare compared to the cases above. In
> these cases human intervention will be necessary.
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