From c65a6bb4ea7affc1fb1d0f7ccf20961e20d04152 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Tu=C5=BCnik?= <jtuznik@google.com>
Date: Tue, 14 Apr 2020 15:27:55 +0200
Subject: [PATCH] Scalability: Switch to deltaClusterSnapshot

This massively speeds up checking predicates.
---
 cluster-autoscaler/main.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cluster-autoscaler/main.go b/cluster-autoscaler/main.go
index bcbf14c28c4b..b6fc06baa1da 100644
--- a/cluster-autoscaler/main.go
+++ b/cluster-autoscaler/main.go
@@ -43,6 +43,7 @@ import (
 	"k8s.io/autoscaler/cluster-autoscaler/metrics"
 	ca_processors "k8s.io/autoscaler/cluster-autoscaler/processors"
 	"k8s.io/autoscaler/cluster-autoscaler/processors/nodegroupset"
+	"k8s.io/autoscaler/cluster-autoscaler/simulator"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/errors"
 	kube_util "k8s.io/autoscaler/cluster-autoscaler/utils/kubernetes"
 	"k8s.io/autoscaler/cluster-autoscaler/utils/units"
@@ -293,6 +294,7 @@ func buildAutoscaler() (core.Autoscaler, error) {
 
 	opts := core.AutoscalerOptions{
 		AutoscalingOptions: autoscalingOptions,
+		ClusterSnapshot:    simulator.NewDeltaClusterSnapshot(),
 		KubeClient:         kubeClient,
 		EventsKubeClient:   eventsKubeClient,
 	}