From eca08e963444d77209f093a6137f5d70f7519e21 Mon Sep 17 00:00:00 2001
From: Benety Goh <benety@mongodb.com>
Date: Sat, 25 Jan 2020 14:36:27 +0000
Subject: SERVER-45697 unlock RSTL based on requested index build method rather
 than feature check

---
 src/mongo/db/index_builds_coordinator.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mongo/db/index_builds_coordinator.cpp b/src/mongo/db/index_builds_coordinator.cpp
index 8730ae99e73..5697927b83c 100644
--- a/src/mongo/db/index_builds_coordinator.cpp
+++ b/src/mongo/db/index_builds_coordinator.cpp
@@ -1545,7 +1545,7 @@ void IndexBuildsCoordinator::_runIndexBuildInner(OperationContext* opCtx,
             // X lock while a prepared transaction held a Collection IX lock, and a step down was
             // waiting to acquire the RSTL in mode X.
             // TODO(SERVER-44045): Revisit this logic for the non-two phase index build case.
-            if (!supportsTwoPhaseIndexBuild()) {
+            if (IndexBuildProtocol::kTwoPhase != replState->protocol) {
                 const bool unlocked = opCtx->lockState()->unlockRSTLforPrepare();
                 invariant(unlocked);
             }
-- 
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