kw2542 commented on a change in pull request #14942:
URL: https://github.com/apache/beam/pull/14942#discussion_r648684999



##########
File path: 
runners/portability/java/src/main/java/org/apache/beam/runners/portability/ExternalWorkerService.java
##########
@@ -130,15 +131,13 @@ public void close() {}
    *       up-front and matches the running job. See {@link PipelineOptions} 
for further details.
    * </ul>
    */
-  public static void main(String[] args) throws Exception {
-    main(System::getenv);
-  }
-
-  public static void main(Function<String, String> environmentVarGetter) 
throws Exception {
+  public static void main(String[] args) {
     LOG.info("Starting external worker service");
-    LOG.info("Pipeline options {}", 
environmentVarGetter.apply(PIPELINE_OPTIONS_ENV_VAR));
-    PipelineOptions options =
-        
PipelineOptionsTranslation.fromJson(environmentVarGetter.apply(PIPELINE_OPTIONS_ENV_VAR));
+    final String optionsEnv =
+        checkArgumentNotNull(
+            System.getenv(PIPELINE_OPTIONS_ENV_VAR), "No pipeline options 
provided.");

Review comment:
       Updated




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