From f37967394f9b6b8b04d3a3bd3900ed07ce0ad6b2 Mon Sep 17 00:00:00 2001
From: Tianzi Cai <tianzi@google.com>
Date: Wed, 2 Sep 2020 09:44:11 -0700
Subject: [PATCH] samples: add comment to regional endpoint (#339)

---
 .../snippets/src/main/java/pubsub/PublishWithOrderingKeys.java  | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/samples/snippets/src/main/java/pubsub/PublishWithOrderingKeys.java b/samples/snippets/src/main/java/pubsub/PublishWithOrderingKeys.java
index 9f7757707..d199e7ff8 100644
--- a/samples/snippets/src/main/java/pubsub/PublishWithOrderingKeys.java
+++ b/samples/snippets/src/main/java/pubsub/PublishWithOrderingKeys.java
@@ -47,6 +47,8 @@ public static void publishWithOrderingKeysExample(String projectId, String topic
     // Create a publisher and set message ordering to true.
     Publisher publisher =
         Publisher.newBuilder(topicName)
+            // Sending messages to the same region ensures they are received in order
+            // even when multiple publishers are used.
             .setEndpoint("us-east1-pubsub.googleapis.com:443")
             .setEnableMessageOrdering(true)
             .build();