From b50f1e2121171a2079282753ef699c07bcfe8918 Mon Sep 17 00:00:00 2001
From: Selwin Ong <selwin.ong@gmail.com>
Date: Sat, 7 Nov 2020 22:27:30 +0700
Subject: [PATCH] Redis does not accept `parser_class` argument (#1373)

---
 rq/scheduler.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rq/scheduler.py b/rq/scheduler.py
index 561ee5a..a041a71 100644
--- a/rq/scheduler.py
+++ b/rq/scheduler.py
@@ -40,6 +40,9 @@ class RQScheduler(object):
         self._scheduled_job_registries = []
         self.lock_acquisition_time = None
         self._connection_kwargs = connection.connection_pool.connection_kwargs
+        # Redis does not accept parser_class argument which is sometimes present
+        # on connection_pool kwargs, for example when hiredis is used
+        self._connection_kwargs.pop('parser_class', None)
         self._connection_class = connection.__class__  # client
         connection_class = connection.connection_pool.connection_class
         if issubclass(connection_class, SSLConnection):