Skip license refresh if no shards to allocate

Author: DaveCTurner

server/src/main/java/org/elasticsearch/cluster/routing/allocation/NodeAllocationStatsAndWeightsCalculator.java

@@ -70,7 +70,10 @@ public Map<String, NodeAllocationStatsAndWeight> nodesAllocationStatsAndWeights(
         ClusterInfo clusterInfo,
         @Nullable DesiredBalance desiredBalance
     ) {
-        writeLoadForecaster.refreshLicence();
+        if (metadata.indices().isEmpty() == false) {
+            // must not use licensed features when just starting up
+            writeLoadForecaster.refreshLicence();
+        }
         var weightFunction = new WeightFunction(shardBalanceFactor, indexBalanceFactor, writeLoadBalanceFactor, diskUsageBalanceFactor);
         var avgShardsPerNode = WeightFunction.avgShardPerNode(metadata, routingNodes);
         var avgWriteLoadPerNode = WeightFunction.avgWriteLoadPerNode(writeLoadForecaster, metadata, routingNodes);

server/src/main/java/org/elasticsearch/cluster/routing/allocation/allocator/BalancedShardsAllocator.java

@@ -145,7 +145,10 @@ public BalancedShardsAllocator(ClusterSettings clusterSettings, WriteLoadForecas
 
     @Override
     public void allocate(RoutingAllocation allocation) {
-        writeLoadForecaster.refreshLicence();
+        if (allocation.metadata().indices().isEmpty() == false) {
+            // must not use licensed features when just starting up
+            writeLoadForecaster.refreshLicence();
+        }
 
         assert allocation.ignoreDisable() == false;