From ff120752825cf587ad84f7b7da480d387d53cca5 Mon Sep 17 00:00:00 2001
From: "Ariel T. Glenn" <ariel@wikimedia.org>
Date: Mon, 8 Apr 2019 09:45:55 +0300
Subject: [PATCH] avoid link cache issues with duplicate title keys for xml
 dumps

Bug: T220316
Change-Id: If73d6c9b4cac298a7832d65ffa34bc8f69b87752
---
 includes/export/XmlDumpWriter.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/includes/export/XmlDumpWriter.php b/includes/export/XmlDumpWriter.php
index 6ca8853ca6..2ae5c2fa4e 100644
--- a/includes/export/XmlDumpWriter.php
+++ b/includes/export/XmlDumpWriter.php
@@ -207,6 +207,12 @@ class XmlDumpWriter {
 	 * @return string
 	 */
 	function closePage() {
+		if ( $this->currentTitle !== null ) {
+			$linkCache = MediaWikiServices::getInstance()->getLinkCache();
+			// In rare cases, link cache has the same key for some pages which
+			// might be read as part of the same batch. T220424 and T220316
+			$linkCache->clearLink( $this->currentTitle );
+		}
 		return "  </page>\n";
 	}
 
-- 
2.20.1