demo: try to set max open files

src/binaries/Cargo.toml

@@ -53,12 +53,11 @@ openraft = { workspace = true }
 sentry = "0.27.0"
 serde = { workspace = true }
 serde_json = { workspace = true }
+sysinfo = "0.26.5"
 tokio-stream = "0.1.10"
 tonic = "0.8.1"
 tracing = "0.1.36"
 url = "2.3.1"
-limits_rs = "0.1.0"
-sysinfo = "0.26.5"
 
 [[bin]]
 name = "databend-meta"

src/binaries/query/main.rs

@@ -34,8 +34,6 @@ use databend_query::servers::MySQLHandler;
 use databend_query::servers::Server;
 use databend_query::servers::ShutdownHandle;
 use databend_query::GlobalServices;
-use limits_rs::get_own_limits;
-use sysinfo::set_open_files_limit;
 use tracing::info;
 use tracing::warn;
 
@@ -76,16 +74,8 @@ async fn main(_global_tracker: Arc<RuntimeTracker>) -> common_exception::Result<
     init_default_metrics_recorder();
     set_panic_hook();
 
-    let limits = get_own_limits().unwrap();
-    let max_open_files_soft_limit = limits.max_open_files.soft;
-    match max_open_files_soft_limit {
-        Some(limit) => {
-            if limit < 65535 && set_open_files_limit(65535) {
-                warn!("Open files limit has been set to {}", 65535);
-            }
-        }
-        None => {}
-    }
+    // Try to set max open files.
+    try_set_max_open_files();
 
     GlobalServices::init(conf.clone()).await?;
     let mut shutdown_handle = ShutdownHandle::create()?;
@@ -265,3 +255,16 @@ fn run_cmd(conf: &Config) -> bool {
 
     true
 }
+
+fn try_set_max_open_files() {
+    let max_open_files = 65535;
+    let set = sysinfo::set_open_files_limit(max_open_files);
+    match set {
+        true => {
+            warn!("Open files limit has been set to {}", max_open_files);
+        }
+        false => {
+            warn!("Open files limit set to {} failed", max_open_files);
+        }
+    }
+}