Class GenericResourceAwareSchedulingPriorityStrategy.GrasSimulatedUser
java.lang.Object
org.apache.storm.scheduler.resource.strategies.priority.DefaultSchedulingPriorityStrategy.SimulatedUser
org.apache.storm.scheduler.resource.strategies.priority.GenericResourceAwareSchedulingPriorityStrategy.GrasSimulatedUser
- Enclosing class:
- GenericResourceAwareSchedulingPriorityStrategy
protected static class GenericResourceAwareSchedulingPriorityStrategy.GrasSimulatedUser
extends DefaultSchedulingPriorityStrategy.SimulatedUser
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Field Summary
FieldsFields inherited from class org.apache.storm.scheduler.resource.strategies.priority.DefaultSchedulingPriorityStrategy.SimulatedUser
assignedCpu, assignedMemory, guaranteedCpu, guaranteedMemory, tds
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected double
protected double
getScore
(double availableCpu, double availableMemory, Map<String, Double> availableGenericResources, TopologyDetails td) Get a score for the simulated user.Methods inherited from class org.apache.storm.scheduler.resource.strategies.priority.DefaultSchedulingPriorityStrategy.SimulatedUser
getNextHighest, getScore, getScore
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Field Details
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guaranteedGenericResources
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Constructor Details
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GrasSimulatedUser
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Method Details
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simScheduleNextHighest
- Overrides:
simScheduleNextHighest
in classDefaultSchedulingPriorityStrategy.SimulatedUser
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getScore
protected double getScore(double availableCpu, double availableMemory, Map<String, Double> availableGenericResources, TopologyDetails td) Get a score for the simulated user. This is used to sort the users, by their highest priority topology. Only give user guarantees that will not exceed cluster capacity. Score of each resource type is calculated as: (Requested + Assigned - Guaranteed)/clusterAvailable The final score is a max over all resource types. Topology score will fall into the following intervals if: User is under quota (guarantee): [(-guarantee)/available : 0] User is over quota: (0, infinity) Unfortunately, score below 0 does not guarantee that the topology will be scheduled due to resources fragmentation.- Parameters:
availableCpu
- available CPU on the cluster.availableMemory
- available memory on the cluster.availableGenericResources
- available generic resources (other that cpu and memory) in clustertd
- the topology we are looking at.- Returns:
- the score.
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getScore
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