From 23011e9849239f350fb1f3318c67aa2be29c0903 Mon Sep 17 00:00:00 2001
From: Matt Broadstone <mbroadst@gmail.com>
Date: Wed, 23 Aug 2017 11:14:43 -0400
Subject: [PATCH] fix(change-streams): ensure a majority read concern on
 initial agg

---
 lib/change_stream.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/change_stream.js b/lib/change_stream.js
index 2eeedaa995..df991ccc76 100644
--- a/lib/change_stream.js
+++ b/lib/change_stream.js
@@ -149,6 +149,7 @@ var buildChangeStreamAggregationCommand = function (serverConfig, namespace, pip
   var command = {
     aggregate : namespace.collection,
     pipeline : changeStreamPipeline,
+    readConcern: { level: 'majority' },
     cursor: {
       batchSize: options.batchSize || 1
     }