From 1bd615f95454014536a00919496f692f79a08f4f Mon Sep 17 00:00:00 2001
From: Evan Tschannen <ejt@apple.com>
Date: Tue, 13 Nov 2018 12:36:04 -0800
Subject: [PATCH] fix: remoteDcIds will not actually have transaction logs
 unless usable regions is > 1

---
 fdbserver/masterserver.actor.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fdbserver/masterserver.actor.cpp b/fdbserver/masterserver.actor.cpp
index 3cc03f89b0..a0dcce6cd6 100644
--- a/fdbserver/masterserver.actor.cpp
+++ b/fdbserver/masterserver.actor.cpp
@@ -1274,8 +1274,10 @@ ACTOR Future<Void> masterCore( Reference<MasterData> self ) {
 	for(auto& dc : self->primaryDcId) {
 		tr.set(recoveryCommitRequest.arena, tLogDatacentersKeyFor(dc), StringRef());
 	}
-	for(auto& dc : self->remoteDcIds) {
-		tr.set(recoveryCommitRequest.arena, tLogDatacentersKeyFor(dc), StringRef());
+	if(self->configuration.usableRegions > 1) {
+		for(auto& dc : self->remoteDcIds) {
+			tr.set(recoveryCommitRequest.arena, tLogDatacentersKeyFor(dc), StringRef());
+		}
 	}
 
 	applyMetadataMutations(self->dbgid, recoveryCommitRequest.arena, tr.mutations.slice(mmApplied, tr.mutations.size()), self->txnStateStore, NULL, NULL);