apache · slfan1989 · Jul 12, 2025 · Jul 10, 2025 · Jul 11, 2025
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPipelines.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPipelines.java
@@ -17,8 +17,8 @@
  */
 package org.apache.hadoop.hdfs;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.IOException;
 import java.util.List;
@@ -35,9 +35,9 @@
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.hdfs.server.datanode.Replica;
 import org.apache.hadoop.test.GenericTestUtils;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.slf4j.event.Level;
 
 public class TestPipelines {
@@ -57,13 +57,13 @@ public class TestPipelines {
     setConfiguration();
   }
 
-  @Before
+  @BeforeEach
   public void startUpCluster() throws IOException {
     cluster = new MiniDFSCluster.Builder(conf).numDataNodes(REPL_FACTOR).build();
     fs = cluster.getFileSystem();
   }
 
-  @After
+  @AfterEach
   public void shutDownCluster() throws IOException {
     if (fs != null) {
       fs.close();
@@ -108,10 +108,9 @@ public void pipeline_01() throws IOException {
       Replica r =
           cluster.getFsDatasetTestUtils(dn).fetchReplica(lb.get(0).getBlock());
 
-      assertTrue("Replica on DN " + dn + " shouldn't be null", r != null);
-      assertEquals("Should be RBW replica on " + dn
-          + " after sequence of calls append()/write()/hflush()",
-          HdfsServerConstants.ReplicaState.RBW, r.getState());
+      assertTrue(r != null, "Replica on DN " + dn + " shouldn't be null");
+      assertEquals(HdfsServerConstants.ReplicaState.RBW, r.getState(),
+          "Should be RBW replica on " + dn + " after sequence of calls append()/write()/hflush()");
     }
     ofs.close();
   }

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPread.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPread.java
@@ -18,9 +18,9 @@
 package org.apache.hadoop.hdfs;
 
 import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_CLIENT_MAX_BLOCK_ACQUIRE_FAILURES_KEY;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 import java.io.EOFException;
 import java.io.IOException;
@@ -53,10 +53,11 @@
 import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.test.GenericTestUtils;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
 import org.mockito.Mockito;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
@@ -82,11 +83,13 @@ public class TestPread {
       LoggerFactory.getLogger(TestPread.class.getName());
   private final GenericTestUtils.LogCapturer dfsClientLog =
       GenericTestUtils.LogCapturer.captureLogs(DFSClient.LOG);
-  @BeforeClass
+
+  @BeforeAll
   public static void setLogLevel() {
     GenericTestUtils.setLogLevel(DFSClient.LOG, org.apache.log4j.Level.WARN);
   }
-  @Before
+
+  @BeforeEach
   public void setup() {
     simulatedStorage = false;
     isHedgedRead = false;
@@ -107,10 +110,10 @@ private void writeFile(FileSystem fileSys, Path name) throws IOException {
       // should throw an exception
       res = e;
     }
-    assertTrue("Error reading beyond file boundary.", res != null);
+    assertTrue(res != null, "Error reading beyond file boundary.");
     in.close();
     if (!fileSys.delete(name, true))
-      assertTrue("Cannot delete file", false);
+      assertTrue(false, "Cannot delete file");
 
     // now create the real file
     DFSTestUtil.createFile(fileSys, name, fileSize, fileSize,
@@ -119,9 +122,9 @@ private void writeFile(FileSystem fileSys, Path name) throws IOException {
 
   private void checkAndEraseData(byte[] actual, int from, byte[] expected, String message) {
     for (int idx = 0; idx < actual.length; idx++) {
-      assertEquals(message+" byte "+(from+idx)+" differs. expected "+
-                        expected[from+idx]+" actual "+actual[idx],
-                        actual[idx], expected[from+idx]);
+      assertEquals(actual[idx], expected[from + idx],
+          message + " byte " + (from + idx)
+              + " differs. expected " + expected[from + idx] + " actual " + actual[idx]);
       actual[idx] = 0;
     }
   }
@@ -140,17 +143,17 @@ private void doPread(FSDataInputStream stm, long position, byte[] buffer,
     while (nread < length) {
       int nbytes =
           stm.read(position + nread, buffer, offset + nread, length - nread);
-      assertTrue("Error in pread", nbytes > 0);
+      assertTrue(nbytes > 0, "Error in pread");
       nread += nbytes;
     }
 
     if (dfstm != null) {
       if (isHedgedRead) {
-        assertTrue("Expected read statistic to be incremented", length <= dfstm
-            .getReadStatistics().getTotalBytesRead() - totalRead);
+        assertTrue(length <= dfstm.getReadStatistics().getTotalBytesRead() - totalRead,
+            "Expected read statistic to be incremented");
       } else {
-        assertEquals("Expected read statistic to be incremented", length, dfstm
-            .getReadStatistics().getTotalBytesRead() - totalRead);
+        assertEquals(length, dfstm.getReadStatistics().getTotalBytesRead() - totalRead,
+            "Expected read statistic to be incremented");
       }
     }
   }
@@ -221,7 +224,7 @@ private void pReadFile(FileSystem fileSys, Path name) throws IOException {
       // should throw an exception
       res = e;
     }
-    assertTrue("Error reading beyond file boundary.", res != null);
+    assertTrue(res != null, "Error reading beyond file boundary.");
 
     stm.close();
   }
@@ -553,9 +556,9 @@ public Void call() throws IOException {
       });
       try {
         future.get(4, TimeUnit.SECONDS);
-        Assert.fail();
+        Assertions.fail();
       } catch (ExecutionException ee) {
-        assertTrue(ee.toString(), ee.getCause() instanceof EOFException);
+        assertTrue(ee.getCause() instanceof EOFException, ee.toString());
       } finally {
         future.cancel(true);
         executor.shutdown();
@@ -570,7 +573,8 @@ public Void call() throws IOException {
    * retrying on a different datanode or by refreshing data nodes and retrying each data node one
    * more time.
    */
-  @Test(timeout=120000)
+  @Test
+  @Timeout(value = 120)
   public void testGetFromOneDataNodeExceptionLogging() throws IOException {
     // With maxBlockAcquireFailures = 0, we would try on each datanode only once and if
     // we fail on all three datanodes, we fail the read request.
@@ -647,7 +651,8 @@ public Void answer(InvocationOnMock invocation) throws Throwable {
   /**
    * Test the case where we always hit IOExceptions, causing the read request to fail.
    */
-  @Test(timeout=60000)
+  @Test
+  @Timeout(value = 60)
   public void testFetchFromDataNodeExceptionLoggingFailedRequest()
       throws IOException {
     testFetchFromDataNodeExceptionLoggingFailedRequest(0);
@@ -723,7 +728,8 @@ public Void answer(InvocationOnMock invocation) throws Throwable {
     }
   }
 
-  @Test(timeout=30000)
+  @Test
+  @Timeout(value = 30)
   public void testHedgedReadFromAllDNFailed() throws IOException {
     Configuration conf = new Configuration();
     int numHedgedReadPoolThreads = 5;
@@ -768,7 +774,7 @@ public Void answer(InvocationOnMock invocation) throws Throwable {
       byte[] buffer = new byte[64 * 1024];
       input = dfsClient.open(filename);
       input.read(0, buffer, 0, 1024);
-      Assert.fail("Reading the block should have thrown BlockMissingException");
+      Assertions.fail("Reading the block should have thrown BlockMissingException");
     } catch (BlockMissingException e) {
       // The result of 9 is due to 2 blocks by 4 iterations plus one because
       // hedgedReadOpsLoopNumForTesting is incremented at start of the loop.
@@ -808,7 +814,8 @@ public void testPreadFailureWithChangedBlockLocations() throws Exception {
    * 7. Consider next calls to getBlockLocations() always returns DN3 as last
    * location.<br>
    */
-  @Test(timeout = 60000)
+  @Test
+  @Timeout(value = 60)
   public void testPreadHedgedFailureWithChangedBlockLocations()
       throws Exception {
     isHedgedRead = true;
@@ -929,10 +936,10 @@ public Boolean get() {
       byte[] buf = new byte[1024];
       int n = din.read(0, buf, 0, data.length());
       assertEquals(data.length(), n);
-      assertEquals("Data should be read", data, new String(buf, 0, n));
-      assertTrue("Read should complete with maximum " + maxFailures
-              + " failures, but completed with " + din.failures,
-          din.failures <= maxFailures);
+      assertEquals(data, new String(buf, 0, n), "Data should be read");
+      assertTrue(din.failures <= maxFailures,
+          "Read should complete with maximum " + maxFailures
+              + " failures, but completed with " + din.failures);
       DFSClient.LOG.info("Read completed");
     }
   }