From fe82f9c5bc7f723bcebe7677ae5e1e0957a109ae Mon Sep 17 00:00:00 2001
From: Ingo Schommer <ingo@silverstripe.com>
Date: Tue, 11 Sep 2012 10:22:17 +0200
Subject: [PATCH] BUG Sequential file upload to fix Solr reindexing problems

---
 code/cms/DMSDocumentAddController.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/code/cms/DMSDocumentAddController.php b/code/cms/DMSDocumentAddController.php
index 0cf9d12..bba207d 100644
--- a/code/cms/DMSDocumentAddController.php
+++ b/code/cms/DMSDocumentAddController.php
@@ -62,6 +62,9 @@ class DMSDocumentAddController extends LeftAndMain {
 		$uploadField = DMSUploadField::create('AssetUploadField', '');
 		$uploadField->setConfig('previewMaxWidth', 40);
 		$uploadField->setConfig('previewMaxHeight', 30);
+		// Required to avoid Solr reindexing (often used alongside DMS) to
+		// return 503s because of too many concurrent reindex requests
+		$uploadField->setConfig('sequentialUploads', 1);
 		$uploadField->addExtraClass('ss-assetuploadfield');
 		$uploadField->removeExtraClass('ss-uploadfield');
 		$uploadField->setTemplate('AssetUploadField');