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https://issues.apache.org/jira/browse/YUNIKORN-287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated YUNIKORN-287:
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Labels: pull-request-available (was: )
> ask release can cause multiple reservations to be released
> ----------------------------------------------------------
>
> Key: YUNIKORN-287
> URL: https://issues.apache.org/jira/browse/YUNIKORN-287
> Project: Apache YuniKorn
> Issue Type: Bug
> Components: core - scheduler
> Reporter: Wilfred Spiegelenburg
> Assignee: Wilfred Spiegelenburg
> Priority: Major
> Labels: pull-request-available
>
> complex scenario with multiple things going on:
> - one application with multiple pending requests
> - two or more pending requests are reserved
> - one of those reserved pending requests is being allocated (scheduler is
> done, cache confirm is called async)
> - the request being allocated is cancelled by the shim in between the time
> the scheduler is done and the cache confirms
> The cancellation of the shim triggers an update and the cache update triggers
> an update. These two updates cause counters for the number of reservations to
> be decremented twice.
> The side effect is that the node that is reserved by the ask that is not
> removed will be skipped until that ask is allocated on a different node. If
> that takes a while (waiting for scale up for instance) then there will be an
> impact on scheduling.
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