/// <summary>
/// Compute the resources assigned to a Schedulable given a particular
/// weight-to-resource ratio w2rRatio.
/// </summary>
private static int ComputeShare(Schedulable sched, double w2rRatio, ResourceType
type)
{
double share = sched.GetWeights().GetWeight(type) * w2rRatio;
share = Math.Max(share, GetResourceValue(sched.GetMinShare(), type));
share = Math.Min(share, GetResourceValue(sched.GetMaxShare(), type));
return((int)share);
}
/// <summary>
/// Get the fairshare for the
/// <see cref="Org.Apache.Hadoop.Yarn.Server.Resourcemanager.Scheduler.Fair.Schedulable
/// "/>
/// if it is fixed, -1 otherwise.
/// The fairshare is fixed if either the maxShare is 0, weight is 0,
/// or the Schedulable is not active for instantaneous fairshare.
/// </summary>
private static int GetFairShareIfFixed(Schedulable sched, bool isSteadyShare, ResourceType
type)
{
// Check if maxShare is 0
if (GetResourceValue(sched.GetMaxShare(), type) <= 0)
{
return(0);
}
// For instantaneous fairshares, check if queue is active
if (!isSteadyShare && (sched is FSQueue) && !((FSQueue)sched).IsActive())
{
return(0);
}
// Check if weight is 0
if (sched.GetWeights().GetWeight(type) <= 0)
{
int minShare = GetResourceValue(sched.GetMinShare(), type);
return((minShare <= 0) ? 0 : minShare);
}
return(-1);
}
