From 7a835b4b78d46669f355e895af94baaf79b02a3d Mon Sep 17 00:00:00 2001
From: Dmitry Kropachev <dmitry.kropachev@gmail.com>
Date: Sun, 22 Feb 2026 17:43:56 -0400
Subject: [PATCH] Use explicit sort key in ConcurrentExecutorListResults

Sort results by index only, avoiding unnecessary comparison of
ExecutionResult namedtuples which could fail on heterogeneous
result/exception types.

Fixes #715
---
 cassandra/concurrent.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cassandra/concurrent.py b/cassandra/concurrent.py
index d6345ca452..ea0b00badb 100644
--- a/cassandra/concurrent.py
+++ b/cassandra/concurrent.py
@@ -204,7 +204,7 @@ def _results(self):
                     raise self._exception
         if self._exception and self._fail_fast:  # raise the exception even if there was no wait
             raise self._exception
-        return [r[1] for r in sorted(self._results_queue)]
+        return [r[1] for r in sorted(self._results_queue, key=lambda x: x[0])]