diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java
index 85054be630..7e026b09cc 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java
@@ -166,7 +166,7 @@ private void verifyDataNodeVolumeMetrics(final FileSystem fs,
     LOG.info("syncIoMean : " + metrics.getSyncIoMean());
     LOG.info("syncIoStdDev : " + metrics.getSyncIoStdDev());
 
-    LOG.info("readIoSampleCount : " + metrics.getReadIoMean());
+    LOG.info("readIoSampleCount : " + metrics.getReadIoSampleCount());
     LOG.info("readIoMean : " + metrics.getReadIoMean());
     LOG.info("readIoStdDev : " + metrics.getReadIoStdDev());