From 8018eb4612f64f773cbbff6f2a1593d7efdaaca7 Mon Sep 17 00:00:00 2001
From: Gleb Natapov <gleb@scylladb.com>
Date: Wed, 23 Jun 2021 10:53:05 +0300
Subject: [PATCH] storage_proxy: use small_vector in
 storage_proxy::query_singular to store executors

Having only one pk to query is the common case, so avoid allocating
executor vector for that case.
---
 service/storage_proxy.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/service/storage_proxy.cc b/service/storage_proxy.cc
index 10a6e0eb0c..1bd0340500 100644
--- a/service/storage_proxy.cc
+++ b/service/storage_proxy.cc
@@ -3978,7 +3978,7 @@ storage_proxy::query_singular(lw_shared_ptr<query::read_command> cmd,
         dht::partition_range_vector&& partition_ranges,
         db::consistency_level cl,
         storage_proxy::coordinator_query_options query_options) {
-    std::vector<std::pair<::shared_ptr<abstract_read_executor>, dht::token_range>> exec;
+    utils::small_vector<std::pair<::shared_ptr<abstract_read_executor>, dht::token_range>, 1> exec;
     exec.reserve(partition_ranges.size());
 
     schema_ptr schema = local_schema_registry().get(cmd->schema_version);