From c7694b5690c9e8f1d1d56e5b6d33d07349258609 Mon Sep 17 00:00:00 2001
From: Dongjoon Hyun <dongjoon@apache.org>
Date: Sat, 21 Mar 2026 12:39:17 -0700
Subject: [PATCH] [SPARK-56128] Use Java `21-jre` instead of `21` image in K8s
 Dockerfile

---
 .../kubernetes/docker/src/main/dockerfiles/spark/Dockerfile     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile b/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile
index 5d15d1a5d3583..d07c894f95927 100644
--- a/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile
+++ b/resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 ARG java_image_name=azul/zulu-openjdk
-ARG java_image_tag=21
+ARG java_image_tag=21-jre
 
 FROM ${java_image_name}:${java_image_tag}
 LABEL org.opencontainers.image.authors="Apache Spark project <dev@spark.apache.org>"