chore: max_running_queries from 8 to 0, disable the max running queries (#15013)

Author: BohuTANG

src/query/config/src/config.rs

@@ -87,7 +87,7 @@ const CATALOG_HIVE: &str = "hive";
 /// Only adding new fields is allowed.
 /// This same rules should be applied to all fields of this struct.
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, Parser)]
-#[clap(name = "databend-query", about, version = &**DATABEND_COMMIT_VERSION, author)]
+#[clap(name = "databend-query", about, version = & * * DATABEND_COMMIT_VERSION, author)]
 #[serde(default)]
 pub struct Config {
     /// Run a command and quit
@@ -1399,14 +1399,14 @@ pub struct QueryConfig {
     #[clap(long, value_name = "VALUE", default_value = "256")]
     pub max_active_sessions: u64,
 
-    #[clap(long, value_name = "VALUE", default_value = "8")]
+    #[clap(long, value_name = "VALUE", default_value = "0")]
     pub max_running_queries: u64,
 
     /// The max total memory in bytes that can be used by this process.
     #[clap(long, value_name = "VALUE", default_value = "0")]
     pub max_server_memory_usage: u64,
 
-    #[clap(long,  value_name = "VALUE",value_parser = clap::value_parser!(bool), default_value = "false")]
+    #[clap(long, value_name = "VALUE", value_parser = clap::value_parser!(bool), default_value = "false")]
     pub max_memory_limit_enabled: bool,
 
     #[deprecated(note = "clickhouse tcp support is deprecated")]
@@ -1490,7 +1490,7 @@ pub struct QueryConfig {
     pub rpc_client_timeout_secs: u64,
 
     /// Table engine memory enabled
-    #[clap(long,  value_name = "VALUE",value_parser = clap::value_parser!(bool), default_value = "true")]
+    #[clap(long, value_name = "VALUE", value_parser = clap::value_parser!(bool), default_value = "true")]
     pub table_engine_memory_enabled: bool,
 
     #[clap(long, value_name = "VALUE", default_value = "5000")]

src/query/config/src/inner.rs

@@ -247,7 +247,7 @@ impl Default for QueryConfig {
             mysql_tls_server_cert: "".to_string(),
             mysql_tls_server_key: "".to_string(),
             max_active_sessions: 256,
-            max_running_queries: 8,
+            max_running_queries: 0,
             max_server_memory_usage: 0,
             max_memory_limit_enabled: false,
             clickhouse_http_handler_host: "127.0.0.1".to_string(),

src/query/service/tests/it/storages/testdata/configs_table_basic.txt

@@ -99,7 +99,7 @@ DB.Table: 'system'.'configs', Table: configs-table_id:1, ver:0, Engine: SystemCo
 | 'query'   | 'max_active_sessions'                      | '256'                                                          | ''       |
 | 'query'   | 'max_memory_limit_enabled'                 | 'false'                                                        | ''       |
 | 'query'   | 'max_query_log_size'                       | '10000'                                                        | ''       |
-| 'query'   | 'max_running_queries'                      | '8'                                                            | ''       |
+| 'query'   | 'max_running_queries'                      | '0'                                                            | ''       |
 | 'query'   | 'max_server_memory_usage'                  | '0'                                                            | ''       |
 | 'query'   | 'max_storage_io_requests'                  | 'null'                                                         | ''       |
 | 'query'   | 'metric_api_address'                       | '127.0.0.1:7070'                                               | ''       |