From 9765a7f6073e8e76670ecedd865a2af91f09a2d9 Mon Sep 17 00:00:00 2001
From: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>
Date: Wed, 23 Mar 2011 16:45:49 -0400
Subject: [PATCH] Added an additional check to lower the chance of OCR race
 conditions between nodes

---
 apps/ocr/tasks.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/apps/ocr/tasks.py b/apps/ocr/tasks.py
index f739d77dcb..4c851a9529 100644
--- a/apps/ocr/tasks.py
+++ b/apps/ocr/tasks.py
@@ -20,6 +20,9 @@ from ocr.conf.settings import REPLICATION_DELAY
 @task
 def task_process_queue_document(queue_document_id):
     queue_document = QueueDocument.objects.get(id=queue_document_id)
+    if queue_document.node_name != platform.node():
+    #Recheck to avoid race condition
+        return
     queue_document.state = QUEUEDOCUMENT_STATE_PROCESSING
     queue_document.node_name = platform.node()
     queue_document.save()