diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
index f49512cd6b5ea..14f5ffeefe0d3 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
@@ -208,7 +208,7 @@ public class DockerLinuxContainerRuntime extends OCIContainerRuntime {
   private static final Pattern dockerImagePattern =
       Pattern.compile(DOCKER_IMAGE_PATTERN);
 
-  private static final Pattern DOCKER_DIGEST_PATTERN = Pattern.compile("^sha256:[a-z0-9]{32,}$");
+  private static final Pattern DOCKER_DIGEST_PATTERN = Pattern.compile("^sha256:[a-z0-9]{12,64}$");
 
   private static final String DEFAULT_PROCFS = "/proc";
 
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/TestDockerContainerRuntime.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/TestDockerContainerRuntime.java
index 4d5fb2f6957b4..ea7c213809330 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/TestDockerContainerRuntime.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/TestDockerContainerRuntime.java
@@ -2042,7 +2042,18 @@ public void testDockerImageNamePattern() throws Exception {
             + "@sha256:f1d4ae3f7261a72e98c6ebefe9985cf10a0ea5bd762585a43e0700ed99863807"};
 
     String[] invalidNames = {"Ubuntu", "ubuntu || fedora", "ubuntu#", "myregistryhost:50AB0/ubuntu",
-        "myregistry#host:50AB0/ubuntu", ":8080/ubuntu"};
+        "myregistry#host:50AB0/ubuntu", ":8080/ubuntu",
+
+        // Invalid: contains "@sha256" but doesn't really contain a digest.
+        "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example@sha256",
+
+        // Invalid: digest is too short.
+        "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example"
+            + "@sha256:f1d4",
+
+        // Invalid: digest is too long
+        "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example"
+            + "@sha256:f1d4ae3f7261a72e98c6ebefe9985cf10a0ea5bd762585a43e0700ed99863807f"};
 
     for (String name : validNames) {
       DockerLinuxContainerRuntime.validateImageName(name);