psantacl commented on code in PR #935:
URL: https://github.com/apache/yunikorn-core/pull/935#discussion_r1710019947
##########
pkg/common/resources/resources.go:
##########
@@ -455,6 +455,74 @@ func (r *Resource) fitIn(smaller *Resource, skipUndef
bool) bool {
return true
}
+// Denominator Resources can be either guaranteed Resources or fairmax
Resources.
+// If the quanity is explicitly 0 or negative, we will check usage. If usage
>= 0, the share will be set to 1.0. Otherwise, it will be set 0.0.
+func getShareFairForDenominator(resourceType string, allocated Quantity,
denominatorResources *Resource) (float64, bool) {
+ if denominatorResources == nil {
+ return 0.0, false
+ }
+
+ denominator, ok := denominatorResources.Resources[resourceType]
+
+ switch {
+ case ok && denominator <= 0:
+ if denominator < 0 {
+ log.Log(log.Resources).Debug("denominator is negative.
will not compute share",
+ zap.String("resource key", resourceType),
+ zap.Int64("resource quantity",
int64(denominator)))
+ }
+
+ if allocated <= 0 {
+ //explicit 0 or negative value with NO usage
+ return float64(0.0), true
+
+ } else {
+ //explicit 0 or negative value with usage
+ return float64(1.0), true
+
+ }
+ case denominator > 0:
+ return (float64(allocated) / float64(denominator)), true
+
+ default:
+ //no denominator. ie. no guarantee or fairmax for resourceType
+ return 0.0, false
+ }
+}
+
+// For a given queue, produce a ratio which represents it's current 'fair'
share usage.
+// Iterate over all of the allocated resource types. For each, compute the
ratio, ultimately returning the max ratio encountered.
+// The numerator will be the allocated usage.
+// If guarantees are present, they will be used for the denominator, otherwise
we will fallback to the 'maxfair' capacity of the cluster.
+func getFairShare(allocated, guaranteed, fair *Resource) float64 {
+ if allocated == nil || len(allocated.Resources) == 0 {
+ return float64(0)
Review Comment:
done
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