From b17d2587904571cb837a2be625a2d9d2ce296d89 Mon Sep 17 00:00:00 2001
From: Judah Schvimer <judah@mongodb.com>
Date: Wed, 4 Jan 2017 16:23:03 -0500
Subject: SERVER-27154 replSetRequestVotes command should wait for durability

(cherry picked from commit 8378a0dfc2ddbf2043b923e8c25362a797a2c120)
---
 src/mongo/db/repl/replication_coordinator_external_state_impl.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp b/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp
index 128e18b9f53..0b951fbe41b 100644
--- a/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp
+++ b/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp
@@ -316,11 +316,11 @@ Status ReplicationCoordinatorExternalStateImpl::storeLocalLastVoteDocument(
             ScopedTransaction transaction(txn, MODE_IX);
             Lock::DBLock dbWriteLock(txn->lockState(), lastVoteDatabaseName, MODE_X);
             Helpers::putSingleton(txn, lastVoteCollectionName, lastVoteObj);
-            return Status::OK();
         }
         MONGO_WRITE_CONFLICT_RETRY_LOOP_END(
             txn, "save replica set lastVote", lastVoteCollectionName);
-        MONGO_UNREACHABLE;
+        txn->recoveryUnit()->waitUntilDurable();
+        return Status::OK();
     } catch (const DBException& ex) {
         return ex.toStatus();
     }
-- 
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