Difference between revisions of "SchedulerRaceReduction"
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'''Drafter: '''[[belliott]] | '''Drafter: '''[[belliott]] | ||
| − | + | == Overview == | |
| − | + | The scheduler is subject to a race condition which can cause it to incorrectly identify available resources on a particular compute host. The problem occurs if multiple scheduler instances/threads concurrently issue an instance build request (i.e. run_instance) to the same compute host. This situation may oversubscribe the given compute host and cause one or more run_instance requests to fail. | |
| + | |||
| + | [https://blueprints.launchpad.net/nova/+spec/scheduler-resource-race Blueprint] | ||
Revision as of 21:14, 11 June 2012
SchedulerRaceReduction
Time: <<DateTime(2012-06-11T20:42:43Z)>>
Drafter: belliott
Overview
The scheduler is subject to a race condition which can cause it to incorrectly identify available resources on a particular compute host. The problem occurs if multiple scheduler instances/threads concurrently issue an instance build request (i.e. run_instance) to the same compute host. This situation may oversubscribe the given compute host and cause one or more run_instance requests to fail.
