Merge pull request #3266 from agresch/agresch_storm_3633

STORM-3633 add message we're about to kill detached workers
diff --git a/storm-server/src/main/java/org/apache/storm/daemon/supervisor/ReadClusterState.java b/storm-server/src/main/java/org/apache/storm/daemon/supervisor/ReadClusterState.java
index 503b44a..35d0857 100644
--- a/storm-server/src/main/java/org/apache/storm/daemon/supervisor/ReadClusterState.java
+++ b/storm-server/src/main/java/org/apache/storm/daemon/supervisor/ReadClusterState.java
@@ -113,6 +113,7 @@
                 }
             }
             if (!detachedRunningWorkers.isEmpty()) {
+                LOG.info("Killing detached workers {}", detachedRunningWorkers);
                 supervisor.killWorkers(detachedRunningWorkers, launcher);
             }
         } catch (Exception e) {