tests: extended coverage for hedged requests and async socket

Author: korowa

tests/queries/0_stateless/03444_distributed_hedged_requests_async_socket.reference

@@ -0,0 +1,16 @@
+-- use_hedged_requests = 0, async_socket_for_remote = 0
+remote() 1 shard: 100
+remote() 3 shards: 300
+Distributed: 100
+-- use_hedged_requests = 0, async_socket_for_remote = 1
+remote() 1 shard: 100
+remote() 3 shards: 300
+Distributed: 100
+-- use_hedged_requests = 1, async_socket_for_remote = 0
+remote() 1 shard: 100
+remote() 3 shards: 300
+Distributed: 100
+-- use_hedged_requests = 1, async_socket_for_remote = 1
+remote() 1 shard: 100
+remote() 3 shards: 300
+Distributed: 100

tests/queries/0_stateless/03444_distributed_hedged_requests_async_socket.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# shellcheck source=../shell_config.sh
+. "$CUR_DIR"/../shell_config.sh
+
+$CLICKHOUSE_CLIENT -m -q "
+    drop table if exists 03444_local;
+    drop table if exists 03444_distr;
+
+    create table 03444_local (id UInt32) engine = MergeTree order by id as select * from numbers(100);
+    create table 03444_distr (id UInt32) engine = Distributed(test_cluster_one_shard_two_replicas, currentDatabase(), 03444_local);
+"
+
+for use_hedged_requests in {0..1}; do
+    for async_socket_for_remote in {0..1}; do
+        echo "-- use_hedged_requests = $use_hedged_requests, async_socket_for_remote = $async_socket_for_remote"
+
+        $CLICKHOUSE_CLIENT -m -q "
+            select 'remote() 1 shard: ' || count()
+            from remote('127.0.0.1|127.0.0.2|127.0.0.3', currentDatabase(), 03444_local)
+            settings prefer_localhost_replica = 0,
+                     max_parallel_replicas = 100,
+                     use_hedged_requests = $use_hedged_requests,
+                     async_socket_for_remote = $async_socket_for_remote;
+
+            select 'remote() 3 shards: ' || count()
+            from remote('127.0.0.1|127.0.0.2,127.0.0.3|127.0.0.4,127.0.0.5|127.0.0.6', currentDatabase(), 03444_local)
+            settings prefer_localhost_replica = 0,
+                     max_parallel_replicas = 100,
+                     use_hedged_requests = $use_hedged_requests,
+                     async_socket_for_remote = $async_socket_for_remote;
+
+            select 'Distributed: ' || count()
+            from 03444_distr
+            settings prefer_localhost_replica = 0,
+                     max_parallel_replicas = 100,
+                     use_hedged_requests = $use_hedged_requests,
+                     async_socket_for_remote = $async_socket_for_remote;
+        "
+
+    done
+done
+
+$CLICKHOUSE_CLIENT -m -q "
+    drop table 03444_local;
+    drop table 03444_distr;
+"