use rustc-hash

Author: fraillt

opentelemetry-sdk/Cargo.toml

@@ -30,6 +30,7 @@ tokio-stream = { workspace = true, optional = true }
 http = { workspace = true, optional = true }
 tracing = {workspace = true, optional = true}
 crossbeam-utils = "0.8.20"
+rustc-hash = "2.0.0"
 
 [package.metadata.docs.rs]
 all-features = true

opentelemetry-sdk/src/metrics/internal/hashed.rs

@@ -1,9 +1,11 @@
 use std::{
     borrow::{Borrow, Cow},
-    hash::{BuildHasher, DefaultHasher, Hash, Hasher},
+    hash::{BuildHasher, Hash, Hasher},
     ops::Deref,
 };
 
+use rustc_hash::FxHasher;
+
 /// Hash value only once, works with references and owned types.
 pub(crate) struct Hashed<'a, T>
 where
@@ -54,7 +56,7 @@ fn calc_hash<T>(value: T) -> u64
 where
     T: Hash,
 {
-    let mut hasher = DefaultHasher::default();
+    let mut hasher = FxHasher::default();
     value.hash(&mut hasher);
     hasher.finish()
 }