phet commented on code in PR #3727:
URL: https://github.com/apache/gobblin/pull/3727#discussion_r1279644630


##########
gobblin-service/src/main/java/org/apache/gobblin/service/modules/orchestration/Orchestrator.java:
##########
@@ -374,9 +358,41 @@ public void orchestrate(Spec spec, Properties jobProps, 
long triggerTimestampMil
     Instrumented.updateTimer(this.flowOrchestrationTimer, System.nanoTime() - 
startTime, TimeUnit.NANOSECONDS);
   }
 
+  /**
+   * Abstraction used to populate the message of and emit a FlowCompileFailed 
event for the Orchestrator.
+   * @param spec
+   * @param flowMetadata
+   */
+  public void emitFlowCompilationFailedEvent(Spec spec, Map<String, String> 
flowMetadata) {
+    // For scheduled flows, we do not insert the flowExecutionId into the 
FlowSpec. As a result, if the flow
+    // compilation fails (i.e. we are unable to find a path), the metadata 
will not have flowExecutionId.
+    // In this case, the current time is used as the flow executionId.
+    
flowMetadata.putIfAbsent(TimingEvent.FlowEventConstants.FLOW_EXECUTION_ID_FIELD,
+        Long.toString(System.currentTimeMillis()));
+
+    String message = "Flow was not compiled successfully.";
+    if (!((FlowSpec) spec).getCompilationErrors().isEmpty()) {
+      message = message + " Compilation errors encountered: " + ((FlowSpec) 
spec).getCompilationErrors();
+    }
+    _log.warn(message);
+    flowMetadata.put(TimingEvent.METADATA_MESSAGE, message);
+
+    Optional<TimingEvent> flowCompileFailedTimer = 
eventSubmitter.transform(submitter ->
+        new TimingEvent(submitter, 
TimingEvent.FlowTimings.FLOW_COMPILE_FAILED));
+
+    if (flowCompileFailedTimer.isPresent()) {
+      flowCompileFailedTimer.get().stop(flowMetadata);
+    }

Review Comment:
   if this works (w/o being challenged by checked exceptions), it would be more 
idiomatic:
   ```
   eventSubmitter.transform(...).ifPresent(timer -> timer.stop(fmd));
   ```



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