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The following commit(s) were added to refs/heads/master by this push:
     new aeb504029d HDDS-9691. Migrate remaining tests in ozone-recon to JUnit5 
(#5669)
aeb504029d is described below

commit aeb504029d280ca5c405784c5e5f74c208c904f8
Author: Raju Balpande <[email protected]>
AuthorDate: Mon Nov 27 21:15:32 2023 +0530

    HDDS-9691. Migrate remaining tests in ozone-recon to JUnit5 (#5669)
---
 hadoop-ozone/recon/pom.xml                         |   6 +-
 .../ozone/recon/OMMetadataManagerTestUtils.java    |   2 +-
 .../apache/hadoop/ozone/recon/TestReconUtils.java  |  54 +++----
 .../hadoop/ozone/recon/common/CommonUtils.java     | 119 ++++++--------
 .../persistence/TestReconWithDifferentSqlDBs.java  |   4 +-
 .../ozone/recon/scm/TestReconNodeManager.java      |   8 +-
 .../impl/TestOzoneManagerServiceProviderImpl.java  | 179 ++++++++++-----------
 .../ozone/recon/spi/impl/TestReconDBProvider.java  |   2 +-
 .../ozone/recon/tasks/TestNSSummaryTask.java       |  64 ++++----
 .../recon/tasks/TestNSSummaryTaskWithFSO.java      | 104 ++++++------
 .../recon/tasks/TestNSSummaryTaskWithLegacy.java   | 108 +++++++------
 11 files changed, 313 insertions(+), 337 deletions(-)

diff --git a/hadoop-ozone/recon/pom.xml b/hadoop-ozone/recon/pom.xml
index 933ac426e1..3bbe8af1bb 100644
--- a/hadoop-ozone/recon/pom.xml
+++ b/hadoop-ozone/recon/pom.xml
@@ -25,6 +25,7 @@
   <artifactId>ozone-recon</artifactId>
   <properties>
     <pnpm.version>7.33.6</pnpm.version>
+    <allow.junit4>false</allow.junit4>
   </properties>
   <build>
     <resources>
@@ -300,11 +301,6 @@
       <type>test-jar</type>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter-params</artifactId>
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/OMMetadataManagerTestUtils.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/OMMetadataManagerTestUtils.java
index cadfc5ca9b..42d69e030f 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/OMMetadataManagerTestUtils.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/OMMetadataManagerTestUtils.java
@@ -27,7 +27,7 @@ import static 
org.apache.hadoop.ozone.om.OmMetadataManagerImpl.DIRECTORY_TABLE;
 import static org.apache.hadoop.ozone.om.OmMetadataManagerImpl.FILE_TABLE;
 import static org.apache.hadoop.ozone.om.OmMetadataManagerImpl.VOLUME_TABLE;
 import static 
org.apache.hadoop.ozone.recon.ReconServerConfigKeys.OZONE_RECON_OM_SNAPSHOT_DB_DIR;
-import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/TestReconUtils.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/TestReconUtils.java
index b138b934fb..b34c8d31c6 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/TestReconUtils.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/TestReconUtils.java
@@ -20,8 +20,9 @@ package org.apache.hadoop.ozone.recon;
 
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.apache.hadoop.ozone.recon.ReconUtils.createTarFile;
-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 static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.Mockito.mock;
@@ -36,6 +37,8 @@ import java.io.InputStream;
 import java.io.OutputStreamWriter;
 import java.net.HttpURLConnection;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.net.URL;
 import java.util.Random;
@@ -44,46 +47,37 @@ import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.hadoop.hdds.conf.OzoneConfiguration;
 import org.apache.hadoop.hdfs.web.URLConnectionFactory;
-import org.junit.Assert;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 /**
  * Test Recon Utility methods.
  */
 public class TestReconUtils {
 
-  @Rule
-  public TemporaryFolder folder = new TemporaryFolder();
+  @TempDir
+  private Path temporaryFolder;
 
   @Test
   public void testGetReconDbDir() throws Exception {
 
-    String filePath = folder.getRoot().getAbsolutePath();
     OzoneConfiguration configuration = new OzoneConfiguration();
-    configuration.set("TEST_DB_DIR", filePath);
+    configuration.set("TEST_DB_DIR", temporaryFolder.toString());
 
     File file = new ReconUtils().getReconDbDir(configuration,
         "TEST_DB_DIR");
-    Assert.assertEquals(filePath, file.getAbsolutePath());
+    assertEquals(temporaryFolder.toString(), file.getAbsolutePath());
   }
 
   @Test
-  public void testCreateTarFile() throws Exception {
+  public void testCreateTarFile(@TempDir File tempSnapshotDir)
+      throws Exception {
 
-    File tempSnapshotDir = null;
     FileInputStream fis = null;
     FileOutputStream fos = null;
     File tarFile = null;
 
     try {
-      String testDirName = System.getProperty("java.io.tmpdir");
-      if (!testDirName.endsWith("/")) {
-        testDirName += "/";
-      }
-      testDirName += "TestCreateTarFile_Dir" + System.currentTimeMillis();
-      tempSnapshotDir = new File(testDirName);
-      tempSnapshotDir.mkdirs();
+      String testDirName = tempSnapshotDir.getPath();
 
       File file = new File(testDirName + "/temp1.txt");
       OutputStreamWriter writer = new OutputStreamWriter(
@@ -98,7 +92,7 @@ public class TestReconUtils {
       writer.close();
 
       tarFile = createTarFile(Paths.get(testDirName));
-      Assert.assertNotNull(tarFile);
+      assertNotNull(tarFile);
 
     } finally {
       org.apache.hadoop.io.IOUtils.closeStream(fis);
@@ -111,8 +105,8 @@ public class TestReconUtils {
   @Test
   public void testUntarCheckpointFile() throws Exception {
 
-    File newDir = folder.newFolder();
-
+    File newDir = Files.createDirectory(
+        temporaryFolder.resolve("NewDir")).toFile();
     File file1 = Paths.get(newDir.getAbsolutePath(), "file1")
         .toFile();
     String str = "File1 Contents";
@@ -131,17 +125,18 @@ public class TestReconUtils {
 
     //Create test tar file.
     File tarFile = createTarFile(newDir.toPath());
-    File outputDir = folder.newFolder();
+    File outputDir = Files.createDirectory(
+        temporaryFolder.resolve("OutputDir")).toFile();
     new ReconUtils().untarCheckpointFile(tarFile, outputDir.toPath());
 
     assertTrue(outputDir.isDirectory());
-    assertTrue(outputDir.listFiles().length == 2);
+    assertEquals(2, outputDir.listFiles().length);
   }
 
   @Test
   public void testMakeHttpCall() throws Exception {
     String url = "http://localhost:9874/dbCheckpoint";;
-    File file1 = Paths.get(folder.getRoot().getPath(), "file1")
+    File file1 = Paths.get(temporaryFolder.toString(), "file1")
         .toFile();
     BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
         new FileOutputStream(file1.getAbsoluteFile()), UTF_8));
@@ -165,8 +160,7 @@ public class TestReconUtils {
   }
 
   @Test
-  public void testGetLastKnownDB() throws IOException {
-    File newDir = folder.newFolder();
+  public void testGetLastKnownDB(@TempDir File newDir) throws IOException {
 
     File file1 = Paths.get(newDir.getAbsolutePath(), "valid_1")
         .toFile();
@@ -195,7 +189,7 @@ public class TestReconUtils {
 
     ReconUtils reconUtils = new ReconUtils();
     File latestValidFile = reconUtils.getLastKnownDB(newDir, "valid");
-    assertTrue(latestValidFile.getName().equals("valid_2"));
+    assertEquals("valid_2", latestValidFile.getName());
   }
 
   @Test
@@ -221,7 +215,7 @@ public class TestReconUtils {
   static void assertNextClosestPowerIndexOfTwo(long n) {
     final int expected = oldNextClosestPowerIndexOfTwoFixed(n);
     final int computed = ReconUtils.nextClosestPowerIndexOfTwo(n);
-    Assert.assertEquals("n=" + n, expected, computed);
+    assertEquals(expected, computed, "n=" + n);
   }
 
   private static int oldNextClosestPowerIndexOfTwoFixed(long n) {
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/common/CommonUtils.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/common/CommonUtils.java
index fc3fcf813b..35196a748b 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/common/CommonUtils.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/common/CommonUtils.java
@@ -34,7 +34,6 @@ import org.apache.hadoop.ozone.recon.api.types.ResponseStatus;
 import org.apache.hadoop.ozone.recon.api.types.VolumeObjectDBInfo;
 import org.apache.hadoop.ozone.recon.recovery.ReconOMMetadataManager;
 import org.apache.hadoop.ozone.security.acl.IAccessAuthorizer;
-import org.junit.Assert;
 
 import javax.ws.rs.core.Response;
 
@@ -43,6 +42,7 @@ import java.util.Collections;
 import java.util.HashMap;
 
 import static org.apache.hadoop.ozone.OzoneAcl.AclScope.ACCESS;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 /**
  * This is a utility class for common code for test cases.
@@ -84,21 +84,20 @@ public class CommonUtils {
     Response rootResponse = nsSummaryEndpoint.getBasicInfo(ROOT_PATH);
     NamespaceSummaryResponse rootResponseObj =
         (NamespaceSummaryResponse) rootResponse.getEntity();
-    Assert.assertEquals(EntityType.ROOT, rootResponseObj.getEntityType());
-    Assert.assertEquals(2, rootResponseObj.getCountStats().getNumVolume());
-    Assert.assertEquals(4, rootResponseObj.getCountStats().getNumBucket());
-    Assert.assertEquals(5, rootResponseObj.getCountStats().getNumTotalDir());
-    Assert.assertEquals(10, rootResponseObj.getCountStats().getNumTotalKey());
-    Assert.assertEquals("USER",
+    assertEquals(EntityType.ROOT, rootResponseObj.getEntityType());
+    assertEquals(2, rootResponseObj.getCountStats().getNumVolume());
+    assertEquals(4, rootResponseObj.getCountStats().getNumBucket());
+    assertEquals(5, rootResponseObj.getCountStats().getNumTotalDir());
+    assertEquals(10, rootResponseObj.getCountStats().getNumTotalKey());
+    assertEquals("USER",
         rootResponseObj.getObjectDBInfo().getAcls().get(0).getType());
-    Assert.assertEquals("WRITE",
-        rootResponseObj.getObjectDBInfo().getAcls().get(0)
+    assertEquals("WRITE", rootResponseObj.getObjectDBInfo().getAcls().get(0)
             .getAclList().get(0));
-    Assert.assertEquals(username,
+    assertEquals(username,
         rootResponseObj.getObjectDBInfo().getAcls().get(0).getName());
-    Assert.assertEquals("value",
+    assertEquals("value",
         rootResponseObj.getObjectDBInfo().getMetadata().get("key"));
-    Assert.assertEquals("ACCESS",
+    assertEquals("ACCESS",
         rootResponseObj.getObjectDBInfo().getAcls().get(0).getScope());
   }
 
@@ -107,26 +106,18 @@ public class CommonUtils {
     Response volResponse = nsSummaryEndpoint.getBasicInfo(VOL_PATH);
     NamespaceSummaryResponse volResponseObj =
         (NamespaceSummaryResponse) volResponse.getEntity();
-    Assert.assertEquals(EntityType.VOLUME,
+    assertEquals(EntityType.VOLUME,
         volResponseObj.getEntityType());
-    Assert.assertEquals(2,
-        volResponseObj.getCountStats().getNumBucket());
-    Assert.assertEquals(4,
-        volResponseObj.getCountStats().getNumTotalDir());
-    Assert.assertEquals(6,
-        volResponseObj.getCountStats().getNumTotalKey());
-    Assert.assertEquals("TestUser",
-        ((VolumeObjectDBInfo) volResponseObj.
+    assertEquals(2, volResponseObj.getCountStats().getNumBucket());
+    assertEquals(4, volResponseObj.getCountStats().getNumTotalDir());
+    assertEquals(6, volResponseObj.getCountStats().getNumTotalKey());
+    assertEquals("TestUser", ((VolumeObjectDBInfo) volResponseObj.
             getObjectDBInfo()).getAdmin());
-    Assert.assertEquals("TestUser",
-        ((VolumeObjectDBInfo) volResponseObj.
+    assertEquals("TestUser", ((VolumeObjectDBInfo) volResponseObj.
             getObjectDBInfo()).getOwner());
-    Assert.assertEquals("vol",
-        volResponseObj.getObjectDBInfo().getName());
-    Assert.assertEquals(2097152,
-        volResponseObj.getObjectDBInfo().getQuotaInBytes());
-    Assert.assertEquals(-1,
-        volResponseObj.getObjectDBInfo().getQuotaInNamespace());
+    assertEquals("vol", volResponseObj.getObjectDBInfo().getName());
+    assertEquals(2097152, volResponseObj.getObjectDBInfo().getQuotaInBytes());
+    assertEquals(-1, volResponseObj.getObjectDBInfo().getQuotaInNamespace());
   }
 
   public void testNSSummaryBasicInfoBucketOne(BucketLayout bucketLayout,
@@ -135,18 +126,18 @@ public class CommonUtils {
         nsSummaryEndpoint.getBasicInfo(BUCKET_ONE_PATH);
     NamespaceSummaryResponse bucketOneObj =
         (NamespaceSummaryResponse) bucketOneResponse.getEntity();
-    Assert.assertEquals(EntityType.BUCKET, bucketOneObj.getEntityType());
-    Assert.assertEquals(4, bucketOneObj.getCountStats().getNumTotalDir());
-    Assert.assertEquals(4, bucketOneObj.getCountStats().getNumTotalKey());
-    Assert.assertEquals("vol",
+    assertEquals(EntityType.BUCKET, bucketOneObj.getEntityType());
+    assertEquals(4, bucketOneObj.getCountStats().getNumTotalDir());
+    assertEquals(4, bucketOneObj.getCountStats().getNumTotalKey());
+    assertEquals("vol",
         ((BucketObjectDBInfo) bucketOneObj.getObjectDBInfo()).getVolumeName());
-    Assert.assertEquals(StorageType.DISK,
+    assertEquals(StorageType.DISK,
         ((BucketObjectDBInfo)
             bucketOneObj.getObjectDBInfo()).getStorageType());
-    Assert.assertEquals(bucketLayout,
+    assertEquals(bucketLayout,
         ((BucketObjectDBInfo)
             bucketOneObj.getObjectDBInfo()).getBucketLayout());
-    Assert.assertEquals("bucket1",
+    assertEquals("bucket1",
         ((BucketObjectDBInfo) bucketOneObj.getObjectDBInfo()).getName());
   }
 
@@ -157,18 +148,18 @@ public class CommonUtils {
         nsSummaryEndpoint.getBasicInfo(BUCKET_TWO_PATH);
     NamespaceSummaryResponse bucketTwoObj =
         (NamespaceSummaryResponse) bucketTwoResponse.getEntity();
-    Assert.assertEquals(EntityType.BUCKET, bucketTwoObj.getEntityType());
-    Assert.assertEquals(0, bucketTwoObj.getCountStats().getNumTotalDir());
-    Assert.assertEquals(2, bucketTwoObj.getCountStats().getNumTotalKey());
-    Assert.assertEquals("vol",
+    assertEquals(EntityType.BUCKET, bucketTwoObj.getEntityType());
+    assertEquals(0, bucketTwoObj.getCountStats().getNumTotalDir());
+    assertEquals(2, bucketTwoObj.getCountStats().getNumTotalKey());
+    assertEquals("vol",
         ((BucketObjectDBInfo) bucketTwoObj.getObjectDBInfo()).getVolumeName());
-    Assert.assertEquals(StorageType.DISK,
+    assertEquals(StorageType.DISK,
         ((BucketObjectDBInfo)
             bucketTwoObj.getObjectDBInfo()).getStorageType());
-    Assert.assertEquals(bucketLayout,
+    assertEquals(bucketLayout,
         ((BucketObjectDBInfo)
             bucketTwoObj.getObjectDBInfo()).getBucketLayout());
-    Assert.assertEquals("bucket2",
+    assertEquals("bucket2",
         ((BucketObjectDBInfo) bucketTwoObj.getObjectDBInfo()).getName());
   }
 
@@ -177,21 +168,14 @@ public class CommonUtils {
     Response dirOneResponse = nsSummaryEndpoint.getBasicInfo(DIR_ONE_PATH);
     NamespaceSummaryResponse dirOneObj =
         (NamespaceSummaryResponse) dirOneResponse.getEntity();
-    Assert.assertEquals(EntityType.DIRECTORY, dirOneObj.getEntityType());
-    Assert.assertEquals(3,
-        dirOneObj.getCountStats().getNumTotalDir());
-    Assert.assertEquals(3,
-        dirOneObj.getCountStats().getNumTotalKey());
-    Assert.assertEquals("dir1",
-        dirOneObj.getObjectDBInfo().getName());
-    Assert.assertEquals(0,
-        dirOneObj.getObjectDBInfo().getMetadata().size());
-    Assert.assertEquals(0,
-        dirOneObj.getObjectDBInfo().getQuotaInBytes());
-    Assert.assertEquals(0,
-        dirOneObj.getObjectDBInfo().getQuotaInNamespace());
-    Assert.assertEquals(0,
-        dirOneObj.getObjectDBInfo().getUsedNamespace());
+    assertEquals(EntityType.DIRECTORY, dirOneObj.getEntityType());
+    assertEquals(3, dirOneObj.getCountStats().getNumTotalDir());
+    assertEquals(3, dirOneObj.getCountStats().getNumTotalKey());
+    assertEquals("dir1", dirOneObj.getObjectDBInfo().getName());
+    assertEquals(0, dirOneObj.getObjectDBInfo().getMetadata().size());
+    assertEquals(0, dirOneObj.getObjectDBInfo().getQuotaInBytes());
+    assertEquals(0, dirOneObj.getObjectDBInfo().getQuotaInNamespace());
+    assertEquals(0, dirOneObj.getObjectDBInfo().getUsedNamespace());
   }
 
   public void testNSSummaryBasicInfoNoPath(
@@ -200,10 +184,9 @@ public class CommonUtils {
         .getBasicInfo(INVALID_PATH);
     NamespaceSummaryResponse invalidObj =
         (NamespaceSummaryResponse) invalidResponse.getEntity();
-    Assert.assertEquals(ResponseStatus.PATH_NOT_FOUND,
-        invalidObj.getStatus());
-    Assert.assertEquals(null, invalidObj.getCountStats());
-    Assert.assertEquals(null, invalidObj.getObjectDBInfo());
+    assertEquals(ResponseStatus.PATH_NOT_FOUND, invalidObj.getStatus());
+    assertEquals(null, invalidObj.getCountStats());
+    assertEquals(null, invalidObj.getObjectDBInfo());
   }
 
   public void testNSSummaryBasicInfoKey(
@@ -211,16 +194,16 @@ public class CommonUtils {
     Response keyResponse = nsSummaryEndpoint.getBasicInfo(KEY_PATH);
     NamespaceSummaryResponse keyResObj =
         (NamespaceSummaryResponse) keyResponse.getEntity();
-    Assert.assertEquals(EntityType.KEY, keyResObj.getEntityType());
-    Assert.assertEquals("vol",
+    assertEquals(EntityType.KEY, keyResObj.getEntityType());
+    assertEquals("vol",
         ((KeyObjectDBInfo) keyResObj.getObjectDBInfo()).getVolumeName());
-    Assert.assertEquals("bucket2",
+    assertEquals("bucket2",
         ((KeyObjectDBInfo) keyResObj.getObjectDBInfo()).getBucketName());
-    Assert.assertEquals("file4",
+    assertEquals("file4",
         ((KeyObjectDBInfo) keyResObj.getObjectDBInfo()).getKeyName());
-    Assert.assertEquals(2049,
+    assertEquals(2049,
         ((KeyObjectDBInfo) keyResObj.getObjectDBInfo()).getDataSize());
-    Assert.assertEquals(HddsProtos.ReplicationType.STAND_ALONE,
+    assertEquals(HddsProtos.ReplicationType.STAND_ALONE,
         ((KeyObjectDBInfo) keyResObj.getObjectDBInfo()).
             getReplicationConfig().getReplicationType());
   }
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/persistence/TestReconWithDifferentSqlDBs.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/persistence/TestReconWithDifferentSqlDBs.java
index 721e524dad..b4cf768957 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/persistence/TestReconWithDifferentSqlDBs.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/persistence/TestReconWithDifferentSqlDBs.java
@@ -20,8 +20,8 @@ package org.apache.hadoop.ozone.recon.persistence;
 import static 
org.apache.hadoop.ozone.recon.ReconControllerModule.ReconDaoBindingModule.RECON_DAO_LIST;
 import static org.hadoop.ozone.recon.codegen.SqlDbUtils.SQLITE_DRIVER_CLASS;
 import static org.hadoop.ozone.recon.schema.Tables.RECON_TASK_STATUS;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 import java.io.File;
 import java.io.IOException;
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/scm/TestReconNodeManager.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/scm/TestReconNodeManager.java
index 4f6b09309a..2e52b707df 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/scm/TestReconNodeManager.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/scm/TestReconNodeManager.java
@@ -24,10 +24,10 @@ import static 
org.apache.hadoop.hdds.protocol.proto.HddsProtos.NodeOperationalSt
 import static org.apache.hadoop.hdds.scm.ScmConfigKeys.OZONE_SCM_NAMES;
 import static 
org.apache.hadoop.ozone.container.upgrade.UpgradeUtils.defaultLayoutVersionProto;
 import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_METADATA_DIRS;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertThrows;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestOzoneManagerServiceProviderImpl.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestOzoneManagerServiceProviderImpl.java
index e93073cbd0..497d05c4f8 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestOzoneManagerServiceProviderImpl.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestOzoneManagerServiceProviderImpl.java
@@ -30,10 +30,11 @@ import static 
org.apache.hadoop.ozone.recon.ReconServerConfigKeys.RECON_OM_DELTA
 import static org.apache.hadoop.ozone.recon.ReconUtils.createTarFile;
 import static 
org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.OmSnapshotTaskName.OmDeltaRequest;
 import static 
org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.OmSnapshotTaskName.OmSnapshotRequest;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyString;
@@ -75,11 +76,9 @@ import 
org.apache.hadoop.ozone.recon.tasks.ReconTaskController;
 
 import org.hadoop.ozone.recon.schema.tables.daos.ReconTaskStatusDao;
 import org.hadoop.ozone.recon.schema.tables.pojos.ReconTaskStatus;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.TemporaryFolder;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 import org.mockito.ArgumentCaptor;
 import org.rocksdb.TransactionLogIterator.BatchResult;
 import org.rocksdb.WriteBatch;
@@ -89,33 +88,33 @@ import org.rocksdb.WriteBatch;
  */
 public class TestOzoneManagerServiceProviderImpl {
 
-  @Rule
-  public TemporaryFolder temporaryFolder = new TemporaryFolder();
-
   private OzoneConfiguration configuration;
   private OzoneManagerProtocol ozoneManagerProtocol;
   private CommonUtils commonUtils;
 
-  @Before
-  public void setUp() throws Exception {
+  @BeforeEach
+  public void setUp(@TempDir File dirReconSnapDB, @TempDir File dirReconDB)
+      throws Exception {
     configuration = new OzoneConfiguration();
     configuration.set(OZONE_RECON_OM_SNAPSHOT_DB_DIR,
-        temporaryFolder.newFolder().getAbsolutePath());
+        dirReconSnapDB.getAbsolutePath());
     configuration.set(OZONE_RECON_DB_DIR,
-        temporaryFolder.newFolder().getAbsolutePath());
+        dirReconDB.getAbsolutePath());
     configuration.set("ozone.om.address", "localhost:9862");
     ozoneManagerProtocol = getMockOzoneManagerClient(new DBUpdates());
     commonUtils = new CommonUtils();
   }
 
   @Test
-  public void testUpdateReconOmDBWithNewSnapshot() throws Exception {
+  public void testUpdateReconOmDBWithNewSnapshot(
+      @TempDir File dirOmMetadata, @TempDir File dirReconMetadata)
+      throws Exception {
 
     OMMetadataManager omMetadataManager =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata);
     ReconOMMetadataManager reconOMMetadataManager =
         getTestReconOmMetadataManager(omMetadataManager,
-            temporaryFolder.newFolder());
+            dirReconMetadata);
 
     writeDataToOm(omMetadataManager, "key_one");
     writeDataToOm(omMetadataManager, "key_two");
@@ -139,9 +138,9 @@ public class TestOzoneManagerServiceProviderImpl {
             reconOMMetadataManager, reconTaskController, reconUtilsMock,
             ozoneManagerProtocol);
 
-    Assert.assertNull(reconOMMetadataManager.getKeyTable(getBucketLayout())
+    assertNull(reconOMMetadataManager.getKeyTable(getBucketLayout())
         .get("/sampleVol/bucketOne/key_one"));
-    Assert.assertNull(reconOMMetadataManager.getKeyTable(getBucketLayout())
+    assertNull(reconOMMetadataManager.getKeyTable(getBucketLayout())
         .get("/sampleVol/bucketOne/key_two"));
 
     assertTrue(ozoneManagerServiceProvider.updateReconOmDBWithNewSnapshot());
@@ -153,12 +152,13 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testReconOmDBCloseAndOpenNewSnapshotDb() throws Exception {
+  public void testReconOmDBCloseAndOpenNewSnapshotDb(
+      @TempDir File dirOmMetadata, @TempDir File dirReconMetadata)
+      throws Exception {
     OMMetadataManager omMetadataManager =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata);
     ReconOMMetadataManager reconOMMetadataManager =
-        getTestReconOmMetadataManager(omMetadataManager,
-            temporaryFolder.newFolder());
+        getTestReconOmMetadataManager(omMetadataManager, dirReconMetadata);
 
     writeDataToOm(omMetadataManager, "key_one");
     writeDataToOm(omMetadataManager, "key_two");
@@ -197,66 +197,58 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testGetOzoneManagerDBSnapshot() throws Exception {
-
-    File reconOmSnapshotDbDir = temporaryFolder.newFolder();
+  public void testGetOzoneManagerDBSnapshot(@TempDir File dirReconMetadata)
+      throws Exception {
 
-    File checkpointDir = Paths.get(reconOmSnapshotDbDir.getAbsolutePath(),
+    File checkpointDir = Paths.get(dirReconMetadata.getAbsolutePath(),
         "testGetOzoneManagerDBSnapshot").toFile();
     checkpointDir.mkdir();
 
     File file1 = Paths.get(checkpointDir.getAbsolutePath(), "file1")
         .toFile();
     String str = "File1 Contents";
-    BufferedWriter writer = null;
-    try {
-      writer = new BufferedWriter(new OutputStreamWriter(
-          new FileOutputStream(file1), UTF_8));
-      writer.write(str);
-    } finally {
-      if (writer != null) {
-        writer.close();
-      }
+
+    try (BufferedWriter writer1 = new BufferedWriter(new OutputStreamWriter(
+        new FileOutputStream(file1), UTF_8))) {
+      writer1.write(str);
     }
 
     File file2 = Paths.get(checkpointDir.getAbsolutePath(), "file2")
         .toFile();
     str = "File2 Contents";
-    try {
-      writer = new BufferedWriter(new OutputStreamWriter(
-          new FileOutputStream(file2), UTF_8));
+    try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
+        new FileOutputStream(file2), UTF_8))) {
       writer.write(str);
-    } finally {
-      writer.close();
     }
 
     //Create test tar file.
     File tarFile = createTarFile(checkpointDir.toPath());
-    InputStream fileInputStream = new FileInputStream(tarFile);
-    ReconUtils reconUtilsMock = getMockReconUtils();
-    HttpURLConnection httpURLConnectionMock = mock(HttpURLConnection.class);
-    when(httpURLConnectionMock.getInputStream()).thenReturn(fileInputStream);
-    when(reconUtilsMock.makeHttpCall(any(), anyString(), anyBoolean()))
-        .thenReturn(httpURLConnectionMock);
-    when(reconUtilsMock.getReconNodeDetails(
-        any(OzoneConfiguration.class))).thenReturn(
-        commonUtils.getReconNodeDetails());
-    ReconOMMetadataManager reconOMMetadataManager =
-        mock(ReconOMMetadataManager.class);
-    ReconTaskController reconTaskController = getMockTaskController();
-    OzoneManagerServiceProviderImpl ozoneManagerServiceProvider =
-        new OzoneManagerServiceProviderImpl(configuration,
-            reconOMMetadataManager, reconTaskController, reconUtilsMock,
-            ozoneManagerProtocol);
-
-    DBCheckpoint checkpoint = ozoneManagerServiceProvider
-        .getOzoneManagerDBSnapshot();
-    assertNotNull(checkpoint);
-    assertTrue(checkpoint.getCheckpointLocation().toFile().isDirectory());
-
-    File[] files = checkpoint.getCheckpointLocation().toFile().listFiles();
-    assertNotNull(files);
-    assertEquals(2, files.length);
+    try (InputStream fileInputStream = new FileInputStream(tarFile)) {
+      ReconUtils reconUtilsMock = getMockReconUtils();
+      HttpURLConnection httpURLConnectionMock = mock(HttpURLConnection.class);
+      when(httpURLConnectionMock.getInputStream()).thenReturn(fileInputStream);
+      when(reconUtilsMock.makeHttpCall(any(), anyString(), anyBoolean()))
+          .thenReturn(httpURLConnectionMock);
+      when(reconUtilsMock.getReconNodeDetails(
+          any(OzoneConfiguration.class))).thenReturn(
+          commonUtils.getReconNodeDetails());
+      ReconOMMetadataManager reconOMMetadataManager =
+          mock(ReconOMMetadataManager.class);
+      ReconTaskController reconTaskController = getMockTaskController();
+      OzoneManagerServiceProviderImpl ozoneManagerServiceProvider =
+          new OzoneManagerServiceProviderImpl(configuration,
+              reconOMMetadataManager, reconTaskController, reconUtilsMock,
+              ozoneManagerProtocol);
+
+      DBCheckpoint checkpoint = ozoneManagerServiceProvider
+          .getOzoneManagerDBSnapshot();
+      assertNotNull(checkpoint);
+      assertTrue(checkpoint.getCheckpointLocation().toFile().isDirectory());
+
+      File[] files = checkpoint.getCheckpointLocation().toFile().listFiles();
+      assertNotNull(files);
+      assertEquals(2, files.length);
+    }
   }
 
 
@@ -265,12 +257,14 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testGetAndApplyDeltaUpdatesFromOM() throws Exception {
+  public void testGetAndApplyDeltaUpdatesFromOM(
+      @TempDir File dirSrcOmMetadata, @TempDir File dirOmMetadata,
+      @TempDir File dirReconMetadata) throws Exception {
 
     // Writing 2 Keys into a source OM DB and collecting it in a
     // DBUpdatesWrapper.
     OMMetadataManager sourceOMMetadataMgr =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirSrcOmMetadata);
     writeDataToOm(sourceOMMetadataMgr, "key_one");
     writeDataToOm(sourceOMMetadataMgr, "key_two");
 
@@ -288,12 +282,11 @@ public class TestOzoneManagerServiceProviderImpl {
 
     // OM Service Provider's Metadata Manager.
     OMMetadataManager omMetadataManager =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata);
 
     OzoneManagerServiceProviderImpl ozoneManagerServiceProvider =
         new OzoneManagerServiceProviderImpl(configuration,
-            getTestReconOmMetadataManager(omMetadataManager,
-                temporaryFolder.newFolder()),
+            getTestReconOmMetadataManager(omMetadataManager, dirReconMetadata),
             getMockTaskController(), new ReconUtils(),
             getMockOzoneManagerClient(dbUpdatesWrapper));
 
@@ -326,12 +319,14 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testGetAndApplyDeltaUpdatesFromOMWithLimit() throws Exception {
+  public void testGetAndApplyDeltaUpdatesFromOMWithLimit(
+      @TempDir File dirSrcOmMetadata, @TempDir File dirOmMetadata,
+      @TempDir File dirReconMetadata) throws Exception {
 
     // Writing 2 Keys into a source OM DB and collecting it in a
     // DBUpdatesWrapper.
     OMMetadataManager sourceOMMetadataMgr =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirSrcOmMetadata);
     writeDataToOm(sourceOMMetadataMgr, "key_one");
     writeDataToOm(sourceOMMetadataMgr, "key_two");
 
@@ -352,7 +347,7 @@ public class TestOzoneManagerServiceProviderImpl {
 
     // OM Service Provider's Metadata Manager.
     OMMetadataManager omMetadataManager =
-        initializeNewOmMetadataManager(temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata);
 
     OzoneConfiguration withLimitConfiguration =
         new OzoneConfiguration(configuration);
@@ -360,16 +355,15 @@ public class TestOzoneManagerServiceProviderImpl {
     withLimitConfiguration.setLong(RECON_OM_DELTA_UPDATE_LOOP_LIMIT, 3);
     OzoneManagerServiceProviderImpl ozoneManagerServiceProvider =
         new OzoneManagerServiceProviderImpl(withLimitConfiguration,
-            getTestReconOmMetadataManager(omMetadataManager,
-                temporaryFolder.newFolder()),
+            getTestReconOmMetadataManager(omMetadataManager, dirReconMetadata),
             getMockTaskController(), new ReconUtils(),
             getMockOzoneManagerClientWith4Updates(dbUpdatesWrapper[0],
                 dbUpdatesWrapper[1], dbUpdatesWrapper[2], 
dbUpdatesWrapper[3]));
 
-    assertEquals(true, dbUpdatesWrapper[0].isDBUpdateSuccess());
-    assertEquals(true, dbUpdatesWrapper[1].isDBUpdateSuccess());
-    assertEquals(true, dbUpdatesWrapper[2].isDBUpdateSuccess());
-    assertEquals(true, dbUpdatesWrapper[3].isDBUpdateSuccess());
+    assertTrue(dbUpdatesWrapper[0].isDBUpdateSuccess());
+    assertTrue(dbUpdatesWrapper[1].isDBUpdateSuccess());
+    assertTrue(dbUpdatesWrapper[2].isDBUpdateSuccess());
+    assertTrue(dbUpdatesWrapper[3].isDBUpdateSuccess());
 
     OMDBUpdatesHandler updatesHandler =
         new OMDBUpdatesHandler(omMetadataManager);
@@ -400,12 +394,13 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testSyncDataFromOMFullSnapshot() throws Exception {
+  public void testSyncDataFromOMFullSnapshot(
+      @TempDir File dirOmMetadata, @TempDir File dirReconMetadata)
+      throws Exception {
 
     // Empty OM DB to start with.
     ReconOMMetadataManager omMetadataManager = getTestReconOmMetadataManager(
-        initializeEmptyOmMetadataManager(temporaryFolder.newFolder()),
-        temporaryFolder.newFolder());
+        initializeEmptyOmMetadataManager(dirOmMetadata), dirReconMetadata);
     ReconTaskStatusDao reconTaskStatusDaoMock =
         mock(ReconTaskStatusDao.class);
     doNothing().when(reconTaskStatusDaoMock)
@@ -438,12 +433,13 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testSyncDataFromOMDeltaUpdates() throws Exception {
+  public void testSyncDataFromOMDeltaUpdates(
+      @TempDir File dirOmMetadata, @TempDir File dirReconMetadata)
+      throws Exception {
 
     // Non-Empty OM DB to start with.
     ReconOMMetadataManager omMetadataManager = getTestReconOmMetadataManager(
-        initializeNewOmMetadataManager(temporaryFolder.newFolder()),
-        temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata), dirReconMetadata);
     ReconTaskStatusDao reconTaskStatusDaoMock =
         mock(ReconTaskStatusDao.class);
     doNothing().when(reconTaskStatusDaoMock)
@@ -478,12 +474,13 @@ public class TestOzoneManagerServiceProviderImpl {
   }
 
   @Test
-  public void testSyncDataFromOMFullSnapshotForSNNFE() throws Exception {
+  public void testSyncDataFromOMFullSnapshotForSNNFE(
+      @TempDir File dirOmMetadata, @TempDir File dirReconMetadata)
+      throws Exception {
 
     // Non-Empty OM DB to start with.
     ReconOMMetadataManager omMetadataManager = getTestReconOmMetadataManager(
-        initializeNewOmMetadataManager(temporaryFolder.newFolder()),
-        temporaryFolder.newFolder());
+        initializeNewOmMetadataManager(dirOmMetadata), dirReconMetadata);
     ReconTaskStatusDao reconTaskStatusDaoMock =
         mock(ReconTaskStatusDao.class);
     doNothing().when(reconTaskStatusDaoMock)
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestReconDBProvider.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestReconDBProvider.java
index d75e99692c..e5aa029a92 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestReconDBProvider.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/spi/impl/TestReconDBProvider.java
@@ -19,7 +19,7 @@
 package org.apache.hadoop.ozone.recon.spi.impl;
 
 import static 
org.apache.hadoop.ozone.recon.ReconServerConfigKeys.OZONE_RECON_DB_DIR;
-import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 import java.io.File;
 import java.io.IOException;
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTask.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTask.java
index 96f58fdc41..6992c3100f 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTask.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTask.java
@@ -39,7 +39,6 @@ import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
-import org.junit.Assert;
 import org.junit.jupiter.api.io.TempDir;
 
 import java.io.File;
@@ -52,6 +51,9 @@ import static 
org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_DB_DIRS;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.writeKeyToOm;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.getMockOzoneManagerServiceProvider;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.getTestReconOmMetadataManager;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
  * Test for NSSummaryTask. Create one bucket of each layout
@@ -122,7 +124,7 @@ public final class TestNSSummaryTask {
 
     NSSummary nonExistentSummary =
         reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
-    Assert.assertNull(nonExistentSummary);
+    assertNull(nonExistentSummary);
 
     populateOMDB();
 
@@ -151,10 +153,10 @@ public final class TestNSSummaryTask {
       reconNamespaceSummaryManager.commitBatchOperation(rdbBatchOperation);
 
       // Verify commit
-      Assert.assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       nSSummaryTask.reprocess(reconOMMetadataManager);
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
@@ -162,44 +164,44 @@ public final class TestNSSummaryTask {
           reconNamespaceSummaryManager.getNSSummary(BUCKET_TWO_OBJECT_ID);
       nsSummaryForBucket3 =
       reconNamespaceSummaryManager.getNSSummary(BUCKET_THREE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertNotNull(nsSummaryForBucket2);
-      Assert.assertNull(nsSummaryForBucket3);
+      assertNotNull(nsSummaryForBucket1);
+      assertNotNull(nsSummaryForBucket2);
+      assertNull(nsSummaryForBucket3);
     }
 
     @Test
     public void testReprocessNSSummaryNull() throws IOException {
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
     }
 
     @Test
     public void testReprocessGetFiles() {
-      Assert.assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
-      Assert.assertEquals(1, nsSummaryForBucket2.getNumOfFiles());
+      assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
+      assertEquals(1, nsSummaryForBucket2.getNumOfFiles());
 
-      Assert.assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
-      Assert.assertEquals(KEY_TWO_SIZE, nsSummaryForBucket2.getSizeOfFiles());
+      assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
+      assertEquals(KEY_TWO_SIZE, nsSummaryForBucket2.getSizeOfFiles());
     }
 
     @Test
     public void testReprocessFileBucketSize() {
       int[] fileDistBucket1 = nsSummaryForBucket1.getFileSizeBucket();
       int[] fileDistBucket2 = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket1.length);
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket2.length);
 
-      Assert.assertEquals(1, fileDistBucket1[0]);
+      assertEquals(1, fileDistBucket1[0]);
       for (int i = 1; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
-        Assert.assertEquals(0, fileDistBucket1[i]);
+        assertEquals(0, fileDistBucket1[i]);
       }
-      Assert.assertEquals(1, fileDistBucket2[1]);
+      assertEquals(1, fileDistBucket2[1]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
         if (i == 1) {
           continue;
         }
-        Assert.assertEquals(0, fileDistBucket2[i]);
+        assertEquals(0, fileDistBucket2[i]);
       }
     }
 
@@ -225,13 +227,13 @@ public final class TestNSSummaryTask {
 
       nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket1);
+      assertNotNull(nsSummaryForBucket1);
       nsSummaryForBucket2 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_TWO_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket2);
+      assertNotNull(nsSummaryForBucket2);
       nsSummaryForBucket3 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_THREE_OBJECT_ID);
-      Assert.assertNull(nsSummaryForBucket3);
+      assertNull(nsSummaryForBucket3);
     }
 
     private OMUpdateEventBatch processEventBatch() throws IOException {
@@ -271,31 +273,31 @@ public final class TestNSSummaryTask {
     @Test
     public void testProcessUpdateFileSize() throws IOException {
       // file 1 is gone, so bucket 1 is empty now
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket1);
+      assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
 
       Set<Long> childDirBucket1 = nsSummaryForBucket1.getChildDir();
-      Assert.assertEquals(0, childDirBucket1.size());
+      assertEquals(0, childDirBucket1.size());
     }
 
     @Test
     public void testProcessBucket() throws IOException {
       // file 5 is added under bucket 2, so bucket 2 has 2 keys now
-      Assert.assertNotNull(nsSummaryForBucket2);
-      Assert.assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket2);
+      assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
       // key 2 + key 5
-      Assert.assertEquals(KEY_TWO_SIZE + KEY_FIVE_SIZE,
+      assertEquals(KEY_TWO_SIZE + KEY_FIVE_SIZE,
           nsSummaryForBucket2.getSizeOfFiles());
 
       int[] fileSizeDist = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileSizeDist.length);
       // 1025L
-      Assert.assertEquals(1, fileSizeDist[0]);
+      assertEquals(1, fileSizeDist[0]);
       // 2050L
-      Assert.assertEquals(1, fileSizeDist[1]);
+      assertEquals(1, fileSizeDist[1]);
       for (int i = 2; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
-        Assert.assertEquals(0, fileSizeDist[i]);
+        assertEquals(0, fileSizeDist[i]);
       }
     }
   }
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithFSO.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithFSO.java
index 771d22a121..66c522cb4d 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithFSO.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithFSO.java
@@ -36,7 +36,6 @@ import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
-import org.junit.Assert;
 import org.junit.jupiter.api.io.TempDir;
 
 import java.io.File;
@@ -52,6 +51,9 @@ import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.initializ
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.writeDirToOm;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.writeKeyToOm;
 import static 
org.apache.hadoop.ozone.recon.ReconServerConfigKeys.OZONE_RECON_NSSUMMARY_FLUSH_TO_DB_MAX_THRESHOLD;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
  * Test for NSSummaryTaskWithFSO.
@@ -138,7 +140,7 @@ public final class TestNSSummaryTaskWithFSO {
 
     NSSummary nonExistentSummary =
             reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
-    Assert.assertNull(nonExistentSummary);
+    assertNull(nonExistentSummary);
 
     populateOMDB();
 
@@ -167,34 +169,34 @@ public final class TestNSSummaryTaskWithFSO {
       reconNamespaceSummaryManager.commitBatchOperation(rdbBatchOperation);
 
       // Verify commit
-      Assert.assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       // reinit Recon RocksDB's namespace CF.
       reconNamespaceSummaryManager.clearNSSummaryTable();
 
       nSSummaryTaskWithFso.reprocessWithFSO(reconOMMetadataManager);
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
       nsSummaryForBucket2 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_TWO_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertNotNull(nsSummaryForBucket2);
+      assertNotNull(nsSummaryForBucket1);
+      assertNotNull(nsSummaryForBucket2);
     }
 
     @Test
     public void testReprocessNSSummaryNull() throws IOException {
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
     }
 
     @Test
     public void testReprocessGetFiles() {
-      Assert.assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
-      Assert.assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
+      assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
+      assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
 
-      Assert.assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
-      Assert.assertEquals(KEY_TWO_OLD_SIZE + KEY_FOUR_SIZE,
+      assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
+      assertEquals(KEY_TWO_OLD_SIZE + KEY_FOUR_SIZE,
           nsSummaryForBucket2.getSizeOfFiles());
     } 
 
@@ -202,22 +204,22 @@ public final class TestNSSummaryTaskWithFSO {
     public void testReprocessFileBucketSize() {
       int[] fileDistBucket1 = nsSummaryForBucket1.getFileSizeBucket();
       int[] fileDistBucket2 = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket1.length);
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket2.length);
 
-      Assert.assertEquals(1, fileDistBucket1[0]);
+      assertEquals(1, fileDistBucket1[0]);
       for (int i = 1; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
-        Assert.assertEquals(0, fileDistBucket1[i]);
+        assertEquals(0, fileDistBucket1[i]);
       }
-      Assert.assertEquals(1, fileDistBucket2[1]);
-      Assert.assertEquals(1, fileDistBucket2[2]);
+      assertEquals(1, fileDistBucket2[1]);
+      assertEquals(1, fileDistBucket2[2]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
         if (i == 1 || i == 2) {
           continue;
         }
-        Assert.assertEquals(0, fileDistBucket2[i]);
+        assertEquals(0, fileDistBucket2[i]);
       }
     }
 
@@ -226,11 +228,11 @@ public final class TestNSSummaryTaskWithFSO {
       // Bucket one has one dir, bucket two has none.
       Set<Long> childDirBucketOne = nsSummaryForBucket1.getChildDir();
       Set<Long> childDirBucketTwo = nsSummaryForBucket2.getChildDir();
-      Assert.assertEquals(1, childDirBucketOne.size());
+      assertEquals(1, childDirBucketOne.size());
       bucketOneAns.clear();
       bucketOneAns.add(DIR_ONE_OBJECT_ID);
-      Assert.assertEquals(bucketOneAns, childDirBucketOne);
-      Assert.assertEquals(0, childDirBucketTwo.size());
+      assertEquals(bucketOneAns, childDirBucketOne);
+      assertEquals(0, childDirBucketTwo.size());
     }
 
     @Test
@@ -239,34 +241,34 @@ public final class TestNSSummaryTaskWithFSO {
       // Dir 1 has two dir: dir2 and dir3.
       NSSummary nsSummaryInDir1 = reconNamespaceSummaryManager
           .getNSSummary(DIR_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryInDir1);
+      assertNotNull(nsSummaryInDir1);
       Set<Long> childDirForDirOne = nsSummaryInDir1.getChildDir();
-      Assert.assertEquals(2, childDirForDirOne.size());
+      assertEquals(2, childDirForDirOne.size());
       dirOneAns.clear();
       dirOneAns.add(DIR_TWO_OBJECT_ID);
       dirOneAns.add(DIR_THREE_OBJECT_ID);
-      Assert.assertEquals(dirOneAns, childDirForDirOne);
+      assertEquals(dirOneAns, childDirForDirOne);
 
       NSSummary nsSummaryInDir2 = reconNamespaceSummaryManager
           .getNSSummary(DIR_TWO_OBJECT_ID);
-      Assert.assertEquals(1, nsSummaryInDir2.getNumOfFiles());
-      Assert.assertEquals(KEY_THREE_SIZE, nsSummaryInDir2.getSizeOfFiles());
+      assertEquals(1, nsSummaryInDir2.getNumOfFiles());
+      assertEquals(KEY_THREE_SIZE, nsSummaryInDir2.getSizeOfFiles());
 
       int[] fileDistForDir2 = nsSummaryInDir2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistForDir2.length);
-      Assert.assertEquals(1, fileDistForDir2[fileDistForDir2.length - 1]);
+      assertEquals(1, fileDistForDir2[fileDistForDir2.length - 1]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS - 1; ++i) {
-        Assert.assertEquals(0, fileDistForDir2[i]);
+        assertEquals(0, fileDistForDir2[i]);
       }
-      Assert.assertEquals(0, nsSummaryInDir2.getChildDir().size());
+      assertEquals(0, nsSummaryInDir2.getChildDir().size());
 
       // bucket should have empty dirName
-      Assert.assertEquals(0, nsSummaryForBucket1.getDirName().length());
-      Assert.assertEquals(0, nsSummaryForBucket2.getDirName().length());
+      assertEquals(0, nsSummaryForBucket1.getDirName().length());
+      assertEquals(0, nsSummaryForBucket2.getDirName().length());
       // check dirName is correctly written
-      Assert.assertEquals(DIR_ONE, nsSummaryInDir1.getDirName());
-      Assert.assertEquals(DIR_TWO, nsSummaryInDir2.getDirName());
+      assertEquals(DIR_ONE, nsSummaryInDir1.getDirName());
+      assertEquals(DIR_TWO, nsSummaryInDir2.getDirName());
     }
   }
 
@@ -399,16 +401,16 @@ public final class TestNSSummaryTaskWithFSO {
       NSSummary nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
       // file 1 is gone, so bucket 1 is empty now
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket1);
+      assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
 
       Set<Long> childDirBucket1 = nsSummaryForBucket1.getChildDir();
       // after put dir4, bucket1 now has two child dirs: dir1 and dir4
-      Assert.assertEquals(2, childDirBucket1.size());
+      assertEquals(2, childDirBucket1.size());
       bucketOneAns.clear();
       bucketOneAns.add(DIR_ONE_OBJECT_ID);
       bucketOneAns.add(DIR_FOUR_OBJECT_ID);
-      Assert.assertEquals(bucketOneAns, childDirBucket1);
+      assertEquals(bucketOneAns, childDirBucket1);
     }
 
     @Test
@@ -418,31 +420,31 @@ public final class TestNSSummaryTaskWithFSO {
       // file 5 is added under bucket 2, so bucket 2 has 3 keys now
       // file 2 is updated with new datasize,
       // so file size dist for bucket 2 should be updated
-      Assert.assertNotNull(nsSummaryForBucket2);
-      Assert.assertEquals(3, nsSummaryForBucket2.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket2);
+      assertEquals(3, nsSummaryForBucket2.getNumOfFiles());
       // key 4 + key 5 + updated key 2
-      Assert.assertEquals(KEY_FOUR_SIZE + KEY_FIVE_SIZE
+      assertEquals(KEY_FOUR_SIZE + KEY_FIVE_SIZE
           + KEY_TWO_UPDATE_SIZE, nsSummaryForBucket2.getSizeOfFiles());
 
       int[] fileSizeDist = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileSizeDist.length);
       // 1023L and 100L
-      Assert.assertEquals(2, fileSizeDist[0]);
+      assertEquals(2, fileSizeDist[0]);
       // 2050L
-      Assert.assertEquals(1, fileSizeDist[2]);
+      assertEquals(1, fileSizeDist[2]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
         if (i == 0 || i == 2) {
           continue;
         }
-        Assert.assertEquals(0, fileSizeDist[i]);
+        assertEquals(0, fileSizeDist[i]);
       }
 
       // after put dir5, bucket 2 now has one dir
       Set<Long> childDirBucket2 = nsSummaryForBucket2.getChildDir();
-      Assert.assertEquals(1, childDirBucket2.size());
+      assertEquals(1, childDirBucket2.size());
       bucketTwoAns.add(DIR_FIVE_OBJECT_ID);
-      Assert.assertEquals(bucketTwoAns, childDirBucket2);
+      assertEquals(bucketTwoAns, childDirBucket2);
     }
 
     @Test
@@ -450,15 +452,15 @@ public final class TestNSSummaryTaskWithFSO {
       // after delete dir 3, dir 1 now has only one dir: dir2
       NSSummary nsSummaryForDir1 = reconNamespaceSummaryManager
           .getNSSummary(DIR_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForDir1);
+      assertNotNull(nsSummaryForDir1);
       Set<Long> childDirForDir1 = nsSummaryForDir1.getChildDir();
-      Assert.assertEquals(1, childDirForDir1.size());
+      assertEquals(1, childDirForDir1.size());
       dirOneAns.clear();
       dirOneAns.add(DIR_TWO_OBJECT_ID);
-      Assert.assertEquals(dirOneAns, childDirForDir1);
+      assertEquals(dirOneAns, childDirForDir1);
 
       // after renaming dir1, check its new name
-      Assert.assertEquals(DIR_ONE_RENAME, nsSummaryForDir1.getDirName());
+      assertEquals(DIR_ONE_RENAME, nsSummaryForDir1.getDirName());
     }
   }
 
diff --git 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithLegacy.java
 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithLegacy.java
index ca7a9d86b1..5ffd03cbb8 100644
--- 
a/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithLegacy.java
+++ 
b/hadoop-ozone/recon/src/test/java/org/apache/hadoop/ozone/recon/tasks/TestNSSummaryTaskWithLegacy.java
@@ -39,7 +39,6 @@ import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
-import org.junit.Assert;
 import org.junit.jupiter.api.io.TempDir;
 
 import java.io.File;
@@ -54,6 +53,9 @@ import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.writeKeyT
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.writeDirToOm;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.getMockOzoneManagerServiceProvider;
 import static 
org.apache.hadoop.ozone.recon.OMMetadataManagerTestUtils.getTestReconOmMetadataManager;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
  * Test for NSSummaryTaskWithLegacy.
@@ -139,7 +141,7 @@ public final class TestNSSummaryTaskWithLegacy {
 
     NSSummary nonExistentSummary =
         reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
-    Assert.assertNull(nonExistentSummary);
+    assertNull(nonExistentSummary);
 
     populateOMDB();
 
@@ -168,34 +170,34 @@ public final class TestNSSummaryTaskWithLegacy {
       reconNamespaceSummaryManager.commitBatchOperation(rdbBatchOperation);
 
       // Verify commit
-      Assert.assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNotNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       // reinit Recon RocksDB's namespace CF.
       reconNamespaceSummaryManager.clearNSSummaryTable();
 
       nSSummaryTaskWithLegacy.reprocessWithLegacy(reconOMMetadataManager);
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
 
       nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
       nsSummaryForBucket2 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_TWO_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertNotNull(nsSummaryForBucket2);
+      assertNotNull(nsSummaryForBucket1);
+      assertNotNull(nsSummaryForBucket2);
     }
 
     @Test
     public void testReprocessNSSummaryNull() throws IOException {
-      Assert.assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
+      assertNull(reconNamespaceSummaryManager.getNSSummary(-1L));
     }
 
     @Test
     public void testReprocessGetFiles() {
-      Assert.assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
-      Assert.assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
+      assertEquals(1, nsSummaryForBucket1.getNumOfFiles());
+      assertEquals(2, nsSummaryForBucket2.getNumOfFiles());
 
-      Assert.assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
-      Assert.assertEquals(KEY_TWO_OLD_SIZE + KEY_FOUR_SIZE,
+      assertEquals(KEY_ONE_SIZE, nsSummaryForBucket1.getSizeOfFiles());
+      assertEquals(KEY_TWO_OLD_SIZE + KEY_FOUR_SIZE,
           nsSummaryForBucket2.getSizeOfFiles());
     }
 
@@ -203,22 +205,22 @@ public final class TestNSSummaryTaskWithLegacy {
     public void testReprocessFileBucketSize() {
       int[] fileDistBucket1 = nsSummaryForBucket1.getFileSizeBucket();
       int[] fileDistBucket2 = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket1.length);
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistBucket2.length);
 
-      Assert.assertEquals(1, fileDistBucket1[0]);
+      assertEquals(1, fileDistBucket1[0]);
       for (int i = 1; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
-        Assert.assertEquals(0, fileDistBucket1[i]);
+        assertEquals(0, fileDistBucket1[i]);
       }
-      Assert.assertEquals(1, fileDistBucket2[1]);
-      Assert.assertEquals(1, fileDistBucket2[2]);
+      assertEquals(1, fileDistBucket2[1]);
+      assertEquals(1, fileDistBucket2[2]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
         if (i == 1 || i == 2) {
           continue;
         }
-        Assert.assertEquals(0, fileDistBucket2[i]);
+        assertEquals(0, fileDistBucket2[i]);
       }
     }
 
@@ -227,11 +229,11 @@ public final class TestNSSummaryTaskWithLegacy {
       // Bucket one has one dir, bucket two has none.
       Set<Long> childDirBucketOne = nsSummaryForBucket1.getChildDir();
       Set<Long> childDirBucketTwo = nsSummaryForBucket2.getChildDir();
-      Assert.assertEquals(1, childDirBucketOne.size());
+      assertEquals(1, childDirBucketOne.size());
       bucketOneAns.clear();
       bucketOneAns.add(DIR_ONE_OBJECT_ID);
-      Assert.assertEquals(bucketOneAns, childDirBucketOne);
-      Assert.assertEquals(0, childDirBucketTwo.size());
+      assertEquals(bucketOneAns, childDirBucketOne);
+      assertEquals(0, childDirBucketTwo.size());
     }
 
     @Test
@@ -240,35 +242,35 @@ public final class TestNSSummaryTaskWithLegacy {
       // Dir 1 has two dir: dir2 and dir3.
       NSSummary nsSummaryInDir1 = reconNamespaceSummaryManager
           .getNSSummary(DIR_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryInDir1);
+      assertNotNull(nsSummaryInDir1);
       Set<Long> childDirForDirOne = nsSummaryInDir1.getChildDir();
-      Assert.assertEquals(2, childDirForDirOne.size());
+      assertEquals(2, childDirForDirOne.size());
       dirOneAns.clear();
       dirOneAns.add(DIR_TWO_OBJECT_ID);
       dirOneAns.add(DIR_THREE_OBJECT_ID);
-      Assert.assertEquals(dirOneAns, childDirForDirOne);
+      assertEquals(dirOneAns, childDirForDirOne);
 
       NSSummary nsSummaryInDir2 = reconNamespaceSummaryManager
           .getNSSummary(DIR_TWO_OBJECT_ID);
-      Assert.assertEquals(1, nsSummaryInDir2.getNumOfFiles());
-      Assert.assertEquals(KEY_THREE_SIZE, nsSummaryInDir2.getSizeOfFiles());
+      assertEquals(1, nsSummaryInDir2.getNumOfFiles());
+      assertEquals(KEY_THREE_SIZE, nsSummaryInDir2.getSizeOfFiles());
 
       int[] fileDistForDir2 = nsSummaryInDir2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileDistForDir2.length);
-      Assert.assertEquals(1,
+      assertEquals(1,
           fileDistForDir2[fileDistForDir2.length - 1]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS - 1; ++i) {
-        Assert.assertEquals(0, fileDistForDir2[i]);
+        assertEquals(0, fileDistForDir2[i]);
       }
-      Assert.assertEquals(0, nsSummaryInDir2.getChildDir().size());
+      assertEquals(0, nsSummaryInDir2.getChildDir().size());
 
       // bucket should have empty dirName
-      Assert.assertEquals(0, nsSummaryForBucket1.getDirName().length());
-      Assert.assertEquals(0, nsSummaryForBucket2.getDirName().length());
+      assertEquals(0, nsSummaryForBucket1.getDirName().length());
+      assertEquals(0, nsSummaryForBucket2.getDirName().length());
       // check dirName is correctly written
-      Assert.assertEquals(DIR_ONE, nsSummaryInDir1.getDirName());
-      Assert.assertEquals(DIR_ONE + OM_KEY_PREFIX + DIR_TWO,
+      assertEquals(DIR_ONE, nsSummaryInDir1.getDirName());
+      assertEquals(DIR_ONE + OM_KEY_PREFIX + DIR_TWO,
           nsSummaryInDir2.getDirName());
     }
   }
@@ -297,10 +299,10 @@ public final class TestNSSummaryTaskWithLegacy {
 
       nsSummaryForBucket1 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket1);
+      assertNotNull(nsSummaryForBucket1);
       nsSummaryForBucket2 =
           reconNamespaceSummaryManager.getNSSummary(BUCKET_TWO_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForBucket2);
+      assertNotNull(nsSummaryForBucket2);
     }
 
     private OMUpdateEventBatch processEventBatch() throws IOException {
@@ -436,16 +438,16 @@ public final class TestNSSummaryTaskWithLegacy {
     @Test
     public void testProcessUpdateFileSize() throws IOException {
       // file 1 is gone, so bucket 1 is empty now
-      Assert.assertNotNull(nsSummaryForBucket1);
-      Assert.assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket1);
+      assertEquals(0, nsSummaryForBucket1.getNumOfFiles());
 
       Set<Long> childDirBucket1 = nsSummaryForBucket1.getChildDir();
       // after put dir4, bucket1 now has two child dirs: dir1 and dir4
-      Assert.assertEquals(2, childDirBucket1.size());
+      assertEquals(2, childDirBucket1.size());
       bucketOneAns.clear();
       bucketOneAns.add(DIR_ONE_OBJECT_ID);
       bucketOneAns.add(DIR_FOUR_OBJECT_ID);
-      Assert.assertEquals(bucketOneAns, childDirBucket1);
+      assertEquals(bucketOneAns, childDirBucket1);
     }
 
     @Test
@@ -453,31 +455,31 @@ public final class TestNSSummaryTaskWithLegacy {
       // file 5 is added under bucket 2, so bucket 2 has 3 keys now
       // file 2 is updated with new datasize,
       // so file size dist for bucket 2 should be updated
-      Assert.assertNotNull(nsSummaryForBucket2);
-      Assert.assertEquals(3, nsSummaryForBucket2.getNumOfFiles());
+      assertNotNull(nsSummaryForBucket2);
+      assertEquals(3, nsSummaryForBucket2.getNumOfFiles());
       // key 4 + key 5 + updated key 2
-      Assert.assertEquals(KEY_FOUR_SIZE + KEY_FIVE_SIZE
+      assertEquals(KEY_FOUR_SIZE + KEY_FIVE_SIZE
           + KEY_TWO_UPDATE_SIZE, nsSummaryForBucket2.getSizeOfFiles());
 
       int[] fileSizeDist = nsSummaryForBucket2.getFileSizeBucket();
-      Assert.assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
+      assertEquals(ReconConstants.NUM_OF_FILE_SIZE_BINS,
           fileSizeDist.length);
       // 1023L and 100L
-      Assert.assertEquals(2, fileSizeDist[0]);
+      assertEquals(2, fileSizeDist[0]);
       // 2050L
-      Assert.assertEquals(1, fileSizeDist[2]);
+      assertEquals(1, fileSizeDist[2]);
       for (int i = 0; i < ReconConstants.NUM_OF_FILE_SIZE_BINS; ++i) {
         if (i == 0 || i == 2) {
           continue;
         }
-        Assert.assertEquals(0, fileSizeDist[i]);
+        assertEquals(0, fileSizeDist[i]);
       }
 
       // after put dir5, bucket 2 now has one dir
       Set<Long> childDirBucket2 = nsSummaryForBucket2.getChildDir();
-      Assert.assertEquals(1, childDirBucket2.size());
+      assertEquals(1, childDirBucket2.size());
       bucketTwoAns.add(DIR_FIVE_OBJECT_ID);
-      Assert.assertEquals(bucketTwoAns, childDirBucket2);
+      assertEquals(bucketTwoAns, childDirBucket2);
     }
 
     @Test
@@ -485,15 +487,15 @@ public final class TestNSSummaryTaskWithLegacy {
       // after delete dir 3, dir 1 now has only one dir: dir2
       NSSummary nsSummaryForDir1 = reconNamespaceSummaryManager
           .getNSSummary(DIR_ONE_OBJECT_ID);
-      Assert.assertNotNull(nsSummaryForDir1);
+      assertNotNull(nsSummaryForDir1);
       Set<Long> childDirForDir1 = nsSummaryForDir1.getChildDir();
-      Assert.assertEquals(1, childDirForDir1.size());
+      assertEquals(1, childDirForDir1.size());
       dirOneAns.clear();
       dirOneAns.add(DIR_TWO_OBJECT_ID);
-      Assert.assertEquals(dirOneAns, childDirForDir1);
+      assertEquals(dirOneAns, childDirForDir1);
 
       // after renaming dir1, check its new name
-      Assert.assertEquals(DIR_ONE_RENAME, nsSummaryForDir1.getDirName());
+      assertEquals(DIR_ONE_RENAME, nsSummaryForDir1.getDirName());
     }
   }
 


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