From 0c4e90c268c557630607da0d3ef7de4622c16b9f Mon Sep 17 00:00:00 2001
From: Mark Paluch <mpaluch@paluch.biz>
Date: Wed, 16 Mar 2022 11:13:41 +0100
Subject: [PATCH] Guard `NodeTopologyView` against absent `INFO` response #2035

Lettuce now ignores when the INFO command completes exceptionally when obtaining a cluster topology and falls back to no-detail handling.
---
 .../io/lettuce/core/cluster/topology/NodeTopologyView.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/io/lettuce/core/cluster/topology/NodeTopologyView.java b/src/main/java/io/lettuce/core/cluster/topology/NodeTopologyView.java
index 3b46494c88..d6cca46409 100644
--- a/src/main/java/io/lettuce/core/cluster/topology/NodeTopologyView.java
+++ b/src/main/java/io/lettuce/core/cluster/topology/NodeTopologyView.java
@@ -64,7 +64,7 @@ private NodeTopologyView(RedisURI redisURI) {
         this.available = true;
         this.redisURI = redisURI;
 
-        Properties properties = parseInfo(info);
+        Properties properties = info == null ? new Properties() : parseInfo(info);
         this.partitions = ClusterPartitionParser.parse(clusterNodes);
         this.connectedClients = getClientCount(properties);
         this.replicationOffset = getReplicationOffset(properties);
@@ -86,7 +86,7 @@ static NodeTopologyView from(RedisURI redisURI, Requests clusterNodesRequests, R
         TimedAsyncCommand<String, String, String> nodes = clusterNodesRequests.getRequest(redisURI);
         TimedAsyncCommand<String, String, String> info = infoRequests.getRequest(redisURI);
 
-        if (resultAvailable(nodes) && resultAvailable(info)) {
+        if (resultAvailable(nodes) && !nodes.isCompletedExceptionally() && resultAvailable(info)) {
             return new NodeTopologyView(redisURI, nodes.join(), optionallyGet(info), nodes.duration());
         }
         return new NodeTopologyView(redisURI);