From 18e75b4b290a2bda841ed6086c0367882f3c8696 Mon Sep 17 00:00:00 2001
From: Graham Herceg <gherceg@dimagi.com>
Date: Tue, 23 Apr 2024 17:08:16 -0400
Subject: [PATCH] Only set if not already set

---
 corehq/apps/es/client.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/corehq/apps/es/client.py b/corehq/apps/es/client.py
index e6f6922114c7..8b162b32f2ac 100644
--- a/corehq/apps/es/client.py
+++ b/corehq/apps/es/client.py
@@ -649,7 +649,8 @@ def _search(self, query, **kw):
         if ES_QUERY_PREFERENCE.enabled(domain):
             # Use domain as key to route to a consistent set of shards.kwargs
             # See https://www.elastic.co/guide/en/elasticsearch/reference/5.6/search-request-preference.html
-            kw['preference'] = domain
+            if 'preference' not in kw:
+                kw['preference'] = domain
 
         with metrics_histogram_timer(
                 'commcare.elasticsearch.search.timing',