diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 2234da306c5..2eeb79f35db 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -175,6 +175,9 @@ Release 2.6.1 - UNRELEASED
     HDFS-8863. The remaining space check in BlockPlacementPolicyDefault is
     flawed. (Kihwal Lee via yliu)
 
+    HDFS-7552. Change FsVolumeList toString() to fix
+    TestDataNodeVolumeFailureToleration (Liang Xie via Colin P. McCabe)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java
index b17b90be121..367824af3de 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeList.java
@@ -216,7 +216,7 @@ class FsVolumeList {
 
   @Override
   public String toString() {
-    return volumes.toString();
+    return Arrays.toString(volumes.get());
   }
 
   /**