1 files changed, 6 insertions, 0 deletions
diff --git a/src/mongo/s/grid.cpp b/src/mongo/s/grid.cpp
index ef6046c558b..4e48113c05f 100644
--- a/src/mongo/s/grid.cpp
+++ b/src/mongo/s/grid.cpp
@@ -30,11 +30,14 @@
 #include "mongo/s/type_database.h"
 #include "mongo/s/type_settings.h"
 #include "mongo/s/type_shard.h"
+#include "mongo/util/fail_point_service.h"
 #include "mongo/util/startup_test.h"
 #include "mongo/util/stringutils.h"
 
 namespace mongo {
 
+    MONGO_FP_DECLARE(neverBalance);
+
     DBConfigPtr Grid::getDBConfig( string database , bool create , const string& shardNameHint ) {
         {
             string::size_type i = database.find( "." );
@@ -471,6 +474,9 @@ namespace mongo {
      */
     bool Grid::shouldBalance( const string& ns, BSONObj* balancerDocOut ) const {
 
+        // Allow disabling the balancer for testing
+        if ( MONGO_FAIL_POINT(neverBalance) ) return false;
+
         scoped_ptr<ScopedDbConnection> conn( ScopedDbConnection::getInternalScopedDbConnection(
                 configServer.getPrimary().getConnString(), 30));
         BSONObj balancerDoc;