HDFS-2391. Newly set BalancerBandwidth value is not displayed anywhere. Contributed by Harsh J

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1358850 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -104,6 +104,9 @@ Release 2.0.1-alpha - UNRELEASED
     HDFS-2988. Improve error message when storage directory lock fails
     (Miomir Boljanovic via harsh)
 
+    HDFS-2391. Newly set BalancerBandwidth value is not displayed anywhere.
+    (harsh)
+
   OPTIMIZATIONS
 
     HDFS-2982. Startup performance suffers when there are many edit log

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java

@@ -615,6 +615,9 @@ class BPOfferService {
       if (bandwidth > 0) {
         DataXceiverServer dxcs =
                      (DataXceiverServer) dn.dataXceiverServer.getRunnable();
+        LOG.info("Updating balance throttler bandwidth from "
+            + dxcs.balanceThrottler.getBandwidth() + " bytes/s "
+            + "to: " + bandwidth + " bytes/s.");
         dxcs.balanceThrottler.setBandwidth(bandwidth);
       }
       break;