From 94e2b103f17a298f601b6eb78ce87be1ce07037f Mon Sep 17 00:00:00 2001
From: Shane Harvey <shnhrv@gmail.com>
Date: Tue, 13 Aug 2019 09:47:56 -0700
Subject: [PATCH] PYTHON-1959 Use read/writeConcern majority for key vault
 operations

---
 pymongo/encryption.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pymongo/encryption.py b/pymongo/encryption.py
index 70ff997c0..10b9c0e4b 100644
--- a/pymongo/encryption.py
+++ b/pymongo/encryption.py
@@ -19,7 +19,6 @@ may be made before the final release.**
 """
 
 import contextlib
-import functools
 import subprocess
 import uuid
 import weakref
@@ -52,7 +51,9 @@ from pymongo.errors import (ConfigurationError,
                             ServerSelectionTimeoutError)
 from pymongo.mongo_client import MongoClient
 from pymongo.pool import _configured_socket, PoolOptions
+from pymongo.read_concern import ReadConcern
 from pymongo.ssl_support import get_ssl_context
+from pymongo.write_concern import WriteConcern
 
 
 _HTTPS_PORT = 443
@@ -88,7 +89,9 @@ class _EncryptionIO(MongoCryptCallback):
         else:
             self.client_ref = None
         self.key_vault_coll = key_vault_coll.with_options(
-            codec_options=_KEY_VAULT_OPTS)
+            codec_options=_KEY_VAULT_OPTS,
+            read_concern=ReadConcern(level='majority'),
+            write_concern=WriteConcern(w='majority'))
         self.mongocryptd_client = mongocryptd_client
         self.opts = opts
         self._spawned = False