fixes #1991

Author: tulinkry

opengrok-indexer/src/main/java/org/opengrok/indexer/index/Indexer.java

@@ -1092,6 +1092,7 @@ public void run() {
 
         // Wait forever for the executors to finish.
         try {
+            LOGGER.info("Waiting for the executors to finish");
             latch.await(999, TimeUnit.DAYS);
         } catch (InterruptedException exp) {
             LOGGER.log(Level.WARNING, "Received interrupt while waiting" +