YARN-4541. Change log message in LocalizedResource#handle() to DEBUG (rchiang via rkanter)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/LocalizedResource.java

@@ -200,9 +200,11 @@ public class LocalizedResource implements EventHandler<ResourceEvent> {
         LOG.warn("Can't handle this event at current state", e);
       }
       if (oldState != newState) {
-        LOG.info("Resource " + resourcePath + (localPath != null ? 
-          "(->" + localPath + ")": "") + " transitioned from " + oldState
-            + " to " + newState);
+        if (LOG.isDebugEnabled()) {
+          LOG.debug("Resource " + resourcePath + (localPath != null ?
+              "(->" + localPath + ")": "") + " transitioned from " + oldState
+              + " to " + newState);
+        }
       }
     } finally {
       this.writeLock.unlock();