xds: fix RingHash LB null pointer issue

grpc · Aug 24, 2021 · 7de1096 · 7de1096
1 parent 389076d
commit 7de1096
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/xds/src/main/java/io/grpc/xds/CdsLoadBalancer2.java b/xds/src/main/java/io/grpc/xds/CdsLoadBalancer2.java
@@ -188,8 +188,10 @@ private void handleClusterDiscovered() {
       if (root.result.lbPolicy() == LbPolicy.RING_HASH) {
         lbProvider = lbRegistry.getProvider("ring_hash");
         lbConfig = new RingHashConfig(root.result.minRingSize(), root.result.maxRingSize());
-      } else {
+      }
+      if (lbProvider == null) {
         lbProvider = lbRegistry.getProvider("round_robin");
+        lbConfig = null;
       }
       ClusterResolverConfig config = new ClusterResolverConfig(
           Collections.unmodifiableList(instances), new PolicySelection(lbProvider, lbConfig));