X-czh commented on code in PR #25877:
URL: https://github.com/apache/flink/pull/25877#discussion_r1901478144


##########
flink-yarn/src/test/java/org/apache/flink/yarn/UtilsTest.java:
##########
@@ -674,6 +679,27 @@ void testGenerateJvmOptsString() {
                                 Utils.IGNORE_UNRECOGNIZED_VM_OPTIONS));
     }
 
+    @Test
+    void testGetTaskManagerEnvsWithJavaHomeSet() {
+        final Configuration cfg = new Configuration();
+        cfg.set(CoreOptions.FLINK_JAVA_HOME, "/opt/jdk");
+        cfg.setString(CONTAINERIZED_TASK_MANAGER_ENV_PREFIX + "key", "val");
+        final ContaineredTaskManagerParameters containeredParams =
+                ContaineredTaskManagerParameters.create(cfg, 
TASK_EXECUTOR_PROCESS_SPEC);
+        final Map<String, String> envVars = containeredParams.taskManagerEnv();
+        assertThat(envVars).containsEntry(ENV_JAVA_HOME, 
"/opt/jdk").containsEntry("key", "val");
+    }
+
+    @Test
+    void testGetTaskManagerEnvsWithoutJavaHomeSet() {
+        final Configuration cfg = new Configuration();
+        cfg.setString(CONTAINERIZED_TASK_MANAGER_ENV_PREFIX + "key", "val");

Review Comment:
   It doesn't seem to be a valid Java expr on JDK11.



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