From 54cdde38c7f3ca56ebfdad914a93be232a41a261 Mon Sep 17 00:00:00 2001
From: Oleg Danilov <oleg@olegd.com>
Date: Tue, 18 Jun 2019 09:11:25 +0300
Subject: [PATCH] HDFS-12314. Typo in the
 TestDataNodeHotSwapVolumes.testAddOneNewVolume(). Contributed by Oleg
 Danilov.

---
 .../hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java
index 6672cd2375..e72c499624 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java
@@ -416,7 +416,7 @@ public void testAddOneNewVolume()
       minNumBlocks = Math.min(minNumBlocks, blockList.getNumberOfBlocks());
       maxNumBlocks = Math.max(maxNumBlocks, blockList.getNumberOfBlocks());
     }
-    assertTrue(Math.abs(maxNumBlocks - maxNumBlocks) <= 1);
+    assertTrue(Math.abs(maxNumBlocks - minNumBlocks) <= 1);
     verifyFileLength(cluster.getFileSystem(), testFile, numBlocks);
   }