fix: pre-allocate vec length

GreptimeTeam · Mar 28, 2023 · 130a2e4 · 130a2e4
1 parent 47ab222
commit 130a2e4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/meta-srv/src/service/store/etcd.rs b/src/meta-srv/src/service/store/etcd.rs
@@ -176,6 +176,8 @@ impl KvStore for EtcdStore {
             options,
         } = req.try_into()?;
 
+        let mut prev_kvs = Vec::with_capacity(keys.len());
+
         let delete_ops = keys
             .into_iter()
             .map(|k| TxnOp::delete(k, options.clone()))
@@ -189,8 +191,6 @@ impl KvStore for EtcdStore {
             .await
             .context(error::EtcdFailedSnafu)?;
 
-        let mut prev_kvs = vec![];
-
         for op_res in txn_res.op_responses() {
             match op_res {
                 TxnOpResponse::Delete(delete_res) => {