From c9dd6fe8d57b20918b75e4c8ef06094af0bad229 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20Mar=C3=ADn?= <git@rmr.ninja>
Date: Tue, 27 Feb 2024 12:35:14 +0100
Subject: [PATCH] Set max_parallel_replicas to 1 when disabling

---
 src/Interpreters/InterpreterSelectQuery.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Interpreters/InterpreterSelectQuery.cpp b/src/Interpreters/InterpreterSelectQuery.cpp
index 1a9827d30f8..1c9b8d911d9 100644
--- a/src/Interpreters/InterpreterSelectQuery.cpp
+++ b/src/Interpreters/InterpreterSelectQuery.cpp
@@ -885,7 +885,7 @@ bool InterpreterSelectQuery::adjustParallelReplicasAfterAnalysis()
     {
         /// The query could use trivial count if it didn't use parallel replicas, so let's disable it and reanalyze
         context->setSetting("allow_experimental_parallel_reading_from_replicas", Field(0));
-        context->setSetting("max_parallel_replicas", UInt64{0});
+        context->setSetting("max_parallel_replicas", UInt64{1});
         LOG_DEBUG(log, "Disabling parallel replicas to be able to use a trivial count optimization");
         return true;
     }