wilfred-s commented on code in PR #1043:
URL: https://github.com/apache/yunikorn-k8shim/pull/1043#discussion_r3916079109
##########
pkg/cache/context.go:
##########
@@ -692,6 +699,40 @@ func (ctx *Context) EventsToRegister(queueingHintFn
fwk.QueueingHintFn) []fwk.Cl
return ctx.predManager.EventsToRegister(queueingHintFn)
}
+// PreFilter evaluates given prefilter based predicates based on current
context
+func (ctx *Context) PreFilter(name string, allocate bool)
*si.PreFilterPredicatesResponse {
+ ctx.lock.RLock()
+ defer ctx.lock.RUnlock()
+ pod := ctx.schedulerCache.GetPod(name)
+ if pod == nil {
+ log.Log(log.ShimContext).Error("failed running PreFilter
plugin",
+ zap.String("pod", name),
+ zap.Error(ErrorPodNotFound))
+ return &si.PreFilterPredicatesResponse{
+ FeasibleNodes: make(map[string]*si.Empty),
+ Success: false,
+ }
+ }
+ // if pod exists in cache, try to run predicates
+ // need to lock cache here as predicates need a stable view into the
cache
+ ctx.schedulerCache.LockForReads()
+ feasibleNodes, cycleState, err := ctx.predManager.PreFilter(pod,
allocate)
+ ctx.schedulerCache.UnlockForReads()
+ if err == nil {
+ ctx.schedulerCache.LockForWrites()
+ ctx.schedulerCache.StoreCycleState(pod, cycleState)
+ ctx.schedulerCache.UnlockForWrites()
Review Comment:
should follow the same setup as for the delete. Lock inside the call which
means we can remove the UnlockForWrites and LockForWrites calls.
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