splitter: 1.0.0-vanilla-kafka - Fixed shutdown

* The shutdown was blocked, because tSplitterStreamProcessor.stop()
  was called twice.
* The second time, it could no longer reach the cluster, hence, blocking
  the shutdown process.

diff --git a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
index fabae8f6d1ab4280ca60b9a4b951079ac28e030c..0eafbda49e0a44c577362d4caf8523bf925eee6b 100644 (file)
--- a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
@@ -254,6 +254,11 @@ public class SplitterStreamProcessor implements Runnable
   public void stop()
   {
     log.info("Shutdown requested...");
+    if (stopped)
+    {
+      log.warn("Ignoring request: already stopped!");
+      return;
+    }
     stopped = true;
     consumer.wakeup();
     running.lock();