diff --git a/k8s/metrics/jaeger/jaeger.yaml b/k8s/metrics/jaeger/jaeger.yaml
index 18d93a4019..1be95339b4 100644
--- a/k8s/metrics/jaeger/jaeger.yaml
+++ b/k8s/metrics/jaeger/jaeger.yaml
@@ -20,7 +20,7 @@ metadata:
 spec:
   strategy: allInOne
   allInOne:
-    image: jaegertracing/all-in-one:latest
+    image: jaegertracing/all-in-one:1.31
     options:
       log-level: debug
   # spec for jaeger-collector components.
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 6121c82c41..fe06a917b1 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -18,6 +18,7 @@ members = [
 	"libs/observability",
 	"libs/proto",
 	"bin/meta",
+	"bin/test",
 	# "bin/agent",
 	# "libs/algorithm",
 	# "libs/algorithms/ngt",
diff --git a/rust/bin/meta/src/main.rs b/rust/bin/meta/src/main.rs
index c45b471783..43efc37b0e 100644
--- a/rust/bin/meta/src/main.rs
+++ b/rust/bin/meta/src/main.rs
@@ -74,7 +74,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .attribute("target_node", "target_node")
         .attribute("exported_kubernetes_namaspace", "default")
         .attribute("kubernetes_name", "vald-lb-gateway")
-        .endpoint("127.0.0.1:4318")
+        .endpoint("http://127.0.0.1:4318")
         .tracer(Tracer::new().enabled(true));
     let mut observability = ObservabilityImpl::new(observability_cfg)?;
 
diff --git a/rust/bin/test_client/Cargo.toml b/rust/bin/test_client/Cargo.toml
new file mode 100644
index 0000000000..f91baab0c6
--- /dev/null
+++ b/rust/bin/test_client/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "test"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+kv = "0.24.0"
+opentelemetry = "0.25.0"
+prost-types = "0.13.2"
+proto = { version = "0.1.0", path = "../../libs/proto" }
+sled = "0.34.7"
+tokio = { version = "1.40.0", features = ["full"] }
+tonic = "0.12.2"
+observability = { path = "../../libs/observability" } 
+defer = "0.2.1"
diff --git a/rust/bin/test_client/src/main.rs b/rust/bin/test_client/src/main.rs
new file mode 100644
index 0000000000..7b408b906a
--- /dev/null
+++ b/rust/bin/test_client/src/main.rs
@@ -0,0 +1,191 @@
+use proto::meta::v1::meta_client::MetaClient;
+use proto::payload::v1::meta;
+use prost_types::Any;
+use opentelemetry::global;
+use opentelemetry::propagation::Injector;
+use tonic::metadata::MetadataMap;
+use tonic::Request;
+
+// MetadataInjector構造体を定義して、Injectorトレイトを実装する
+struct MetadataInjector<'a>(&'a mut MetadataMap);
+
+impl<'a> Injector for MetadataInjector<'a> {
+    fn set(&mut self, key: &str, value: String) {
+        // keyを所有権を持つ文字列に変換してから、挿入する
+        let key_owned = key.to_owned(); // Stringに変換
+        let parsed_key = key_owned.parse::<tonic::metadata::MetadataKey<_>>().unwrap();
+        self.0.insert(parsed_key, value.parse().unwrap());
+    }
+}
+
+// ジェネリック型を用いたトレースコンテキストの挿入関数
+fn inject_trace_context<T>(request: &mut Request<T>) {
+    let metadata = request.metadata_mut();  // mutは不要
+    let mut injector = MetadataInjector(metadata);  // injectorをミュータブルに
+
+    // Contextの取得
+    let current_context = opentelemetry::Context::current();
+
+    // グローバルプロパゲータを使ってトレースコンテキストを挿入
+    global::get_text_map_propagator(|propagator| {
+        propagator.inject_context(&current_context, &mut injector);  // injectorをミュータブルで渡す
+    });
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // gRPC サーバーに接続するクライアントを作成
+    let mut client = MetaClient::connect("http://[::1]:8081").await?;
+
+    // 1. set key: aaa, value: 1
+    let any_value = Any {
+        type_url: "".to_string(),  // 型URLを設定（必要なら適切なURLに）
+        value: b"1".to_vec(),      // Vec<u8> を prost_types::Any に変換
+    };
+    let mut request = tonic::Request::new(meta::KeyValue {
+        key: Some(meta::Key{key: "aaa".to_string()}),
+        value: Some(meta::Value { value: Some(any_value) }),
+    });
+    // トレースコンテキストをリクエストに挿入
+    inject_trace_context(&mut request);
+    client.set(request).await?;
+    println!("Set key: aaa, value: 1");
+
+    // 2. set key: bbb, value: 2
+    let any_value = Any {
+        type_url: "".to_string(),  // 型URLを設定
+        value: b"2".to_vec(),
+    };
+    let mut request = tonic::Request::new(meta::KeyValue {
+        key: Some(meta::Key{key: "bbb".to_string()}),
+        value: Some(meta::Value { value: Some(any_value) }),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    client.set(request).await?;
+    println!("Set key: bbb, value: 2");
+
+    // 3. get key: bbb
+    let mut request = tonic::Request::new(meta::Key {
+        key: "bbb".to_string(),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    let response = client.get(request).await?;
+    println!("Get key: bbb, RESPONSE={:?}", response.into_inner());
+
+    // 4. set key: bbb, value: 3
+    let any_value = Any {
+        type_url: "".to_string(),
+        value: b"3".to_vec(),
+    };
+    let mut request = tonic::Request::new(meta::KeyValue {
+        key: Some(meta::Key{key: "bbb".to_string()}),
+        value: Some(meta::Value { value: Some(any_value) }),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    client.set(request).await?;
+    println!("Set key: bbb, value: 3");
+
+    // 5. get key: bbb
+    let mut request = tonic::Request::new(meta::Key {
+        key: "bbb".to_string(),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    let response = client.get(request).await?;
+    println!("Get key: bbb, RESPONSE={:?}", response.into_inner());
+
+    // 6. delete key: aaa
+    let mut request = tonic::Request::new(meta::Key {
+        key: "aaa".to_string(),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    client.delete(request).await?;
+    println!("Deleted key: aaa");
+
+    // 7. get key: aaa (after deletion)
+    let mut request = tonic::Request::new(meta::Key {
+        key: "aaa".to_string(),
+    });
+    inject_trace_context(&mut request); // トレースコンテキストを挿入
+    let response = client.get(request).await;
+    match response {
+        Ok(res) => println!("Get key: aaa, RESPONSE={:?}", res.into_inner()),
+        Err(e) => println!("Get key: aaa failed with error: {:?}", e),
+    }
+
+    Ok(())
+}
+
+// #[tokio::main]
+// async fn main() -> Result<(), Box<dyn std::error::Error>> {
+//     // gRPC サーバーに接続するクライアントを作成
+//     let mut client = MetaClient::connect("http://[::1]:8081").await?;
+
+//     // 1. set key: aaa, value: 1
+//     let any_value = Any {
+//         type_url: "".to_string(),  // 型URLを設定（必要なら適切なURLに）
+//         value: b"1".to_vec(),      // Vec<u8> を prost_types::Any に変換
+//     };
+//     let request = tonic::Request::new(meta::KeyValue {
+//         key: Some(meta::Key{key: "aaa".to_string()}),
+//         value: Some(meta::Value { value: Some(any_value) }),
+//     });
+//     client.set(request).await?;
+//     println!("Set key: aaa, value: 1");
+
+//     // 2. set key: bbb, value: 2
+//     let any_value = Any {
+//         type_url: "".to_string(),  // 型URLを設定
+//         value: b"2".to_vec(),
+//     };
+//     let request = tonic::Request::new(meta::KeyValue {
+//         key: Some(meta::Key{key: "bbb".to_string()}),
+//         value: Some(meta::Value { value: Some(any_value) }),
+//     });
+//     client.set(request).await?;
+//     println!("Set key: bbb, value: 2");
+
+//     // 3. get key: bbb
+//     let request = tonic::Request::new(meta::Key {
+//         key: "bbb".to_string(),
+//     });
+//     let response = client.get(request).await?;
+//     println!("Get key: bbb, RESPONSE={:?}", response.into_inner());
+
+//     // 4. set key: bbb, value: 3
+//     let any_value = Any {
+//         type_url: "".to_string(),
+//         value: b"3".to_vec(),
+//     };
+//     let request = tonic::Request::new(meta::KeyValue {
+//         key: Some(meta::Key{key: "bbb".to_string()}),
+//         value: Some(meta::Value { value: Some(any_value) }),
+//     });
+//     client.set(request).await?;
+//     println!("Set key: bbb, value: 3");
+
+//     // 5. get key: bbb
+//     let request = tonic::Request::new(meta::Key {
+//         key: "bbb".to_string(),
+//     });
+//     let response = client.get(request).await?;
+//     println!("Get key: bbb, RESPONSE={:?}", response.into_inner());
+
+//     // 6. delete key: aaa
+//     let request = tonic::Request::new(meta::Key {
+//         key: "aaa".to_string(),
+//     });
+//     client.delete(request).await?;
+//     println!("Deleted key: aaa");
+
+//     // 7. get key: aaa (after deletion)
+//     let request = tonic::Request::new(meta::Key {
+//         key: "aaa".to_string(),
+//     });
+//     let response = client.get(request).await;
+//     match response {
+//         Ok(res) => println!("Get key: aaa, RESPONSE={:?}", res.into_inner()),
+//         Err(e) => println!("Get key: aaa failed with error: {:?}", e),
+//     }
+
+//     Ok(())
+// }
\ No newline at end of file
diff --git a/versions/JAEGER_OPERATOR_VERSION b/versions/JAEGER_OPERATOR_VERSION
index 5f46e11eed..d66b738716 100644
--- a/versions/JAEGER_OPERATOR_VERSION
+++ b/versions/JAEGER_OPERATOR_VERSION
@@ -1 +1 @@
-2.56.0
+2.51.0