// CheckNodeMemoryPressurePredicate checks if a pod can be scheduled on a node
// reporting memory pressure condition.
func CheckNodeMemoryPressurePredicate(pod *v1.Pod, meta interface{}, nodeInfo *schedulercache.NodeInfo) (bool, []algorithm.PredicateFailureReason, error) {
var podBestEffort bool
if predicateMeta, ok := meta.(*predicateMetadata); ok {
podBestEffort = predicateMeta.podBestEffort
} else {
// We couldn't parse metadata - fallback to computing it.
podBestEffort = isPodBestEffort(pod)
}
// pod is not BestEffort pod
if !podBestEffort {
return true, nil, nil
}
// is node under presure?
if nodeInfo.MemoryPressureCondition() == v1.ConditionTrue {
return false, []algorithm.PredicateFailureReason{ErrNodeUnderMemoryPressure}, nil
}
return true, nil, nil
}