From 0a873a3c28068d64670fdef555dcadf071023df1 Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aschulz@wikimedia.org>
Date: Tue, 24 Feb 2015 11:34:23 -0800
Subject: [PATCH] Avoid calling rollback() in handleWriteError() if there is no
 trx

Change-Id: Ic3be89151160ad57acda5d95e3995a77f3835717
---
 includes/objectcache/SqlBagOStuff.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/includes/objectcache/SqlBagOStuff.php b/includes/objectcache/SqlBagOStuff.php
index df878f7205..2fb9ff992d 100644
--- a/includes/objectcache/SqlBagOStuff.php
+++ b/includes/objectcache/SqlBagOStuff.php
@@ -731,9 +731,11 @@ class SqlBagOStuff extends BagOStuff {
 			$this->markServerDown( $exception, $serverIndex );
 		}
 		if ( $exception->db && $exception->db->wasReadOnlyError() ) {
-			try {
-				$exception->db->rollback( __METHOD__ );
-			} catch ( DBError $e ) {
+			if ( $exception->db->trxLevel() ) {
+				try {
+					$exception->db->rollback( __METHOD__ );
+				} catch ( DBError $e ) {
+				}
 			}
 		}
 
-- 
2.20.1