HDFS-8642. Make TestFileTruncate more reliable. (Contributed by Rakesh R)

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

@@ -1017,6 +1017,9 @@ Release 2.8.0 - UNRELEASED
     HDFS-8686. WebHdfsFileSystem#getXAttr(Path p, final String name) doesn't
     work if namespace is in capitals (kanaka kumar avvaru via vinayakumarb)
 
+    HDFS-8642. Make TestFileTruncate more reliable. (Rakesh R via
+    Arpit Agarwal)
+
 Release 2.7.2 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileTruncate.java

@@ -62,9 +62,8 @@ import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.util.Time;
 import org.apache.hadoop.util.ToolRunner;
 import org.apache.log4j.Level;
-import org.junit.AfterClass;
+import org.junit.After;
 import org.junit.Before;
-import org.junit.BeforeClass;
 import org.junit.Test;
 
 public class TestFileTruncate {
@@ -90,8 +89,8 @@ public class TestFileTruncate {
 
  private Path parent;
 
-  @BeforeClass
-  public static void startUp() throws IOException {
+  @Before
+  public void setUp() throws IOException {
     conf = new HdfsConfiguration();
     conf.setLong(DFSConfigKeys.DFS_NAMENODE_MIN_BLOCK_SIZE_KEY, BLOCK_SIZE);
     conf.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, BLOCK_SIZE);
@@ -105,20 +104,15 @@ public class TestFileTruncate {
         .waitSafeMode(true)
         .build();
     fs = cluster.getFileSystem();
+    parent = new Path("/test");
   }
 
-  @AfterClass
-  public static void tearDown() throws IOException {
+  @After
+  public void tearDown() throws IOException {
     if(fs != null)      fs.close();
     if(cluster != null) cluster.shutdown();
   }
 
-  @Before
-  public void setup() throws IOException {
-    parent = new Path("/test");
-    fs.delete(parent, true);
-  }
-
   /**
    * Truncate files of different sizes byte by byte.
    */