can't use SYNC cluster a shard SERVER-1535

1 files changed, 6 insertions, 0 deletions

diff --git a/s/grid.cpp b/s/grid.cpp
index ea05f1bcc99..6843059c8c9 100644
--- a/s/grid.cpp
+++ b/s/grid.cpp
@@ -132,6 +132,12 @@ namespace mongo {
         try {
             ScopedDbConnection newShardConn( host );
             newShardConn->getLastError();
+            
+            if ( newShardConn->type() == ConnectionString::SYNC ){
+                newShardConn.done();
+                *errMsg = "can't use sync cluster as a shard.  for replica set, have to use <name>/<server1>,<server2>,...";
+                return false;
+            }
 
             // get the shard's local db's listing
             BSONObj res;