diff --git a/pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/MangedLedgerInterceptorImplTest2.java b/pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerInterceptorImplTest2.java
similarity index 76%
rename from pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/MangedLedgerInterceptorImplTest2.java
rename to pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerInterceptorImplTest2.java
index 080ef9ea4c5fe..b5a610512749c 100644
--- a/pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/MangedLedgerInterceptorImplTest2.java
+++ b/pulsar-broker/src/test/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerInterceptorImplTest2.java
@@ -19,7 +19,7 @@
 package org.apache.bookkeeper.mledger.impl;
 
 import static org.testng.Assert.assertEquals;
-import static org.apache.pulsar.broker.intercept.MangedLedgerInterceptorImplTest.TestPayloadProcessor;
+import static org.apache.pulsar.broker.intercept.ManagedLedgerInterceptorImplTest.TestPayloadProcessor;
 import java.util.HashSet;
 import java.util.Set;
 import lombok.extern.slf4j.Slf4j;
@@ -28,20 +28,40 @@
 import org.apache.bookkeeper.mledger.intercept.ManagedLedgerInterceptor;
 import org.apache.bookkeeper.test.MockedBookKeeperTestCase;
 import org.apache.pulsar.broker.intercept.ManagedLedgerInterceptorImpl;
-import org.apache.pulsar.broker.intercept.MangedLedgerInterceptorImplTest;
+import org.apache.pulsar.broker.intercept.ManagedLedgerInterceptorImplTest;
 import org.apache.pulsar.common.intercept.ManagedLedgerPayloadProcessor;
 import org.awaitility.Awaitility;
+import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
 
 /***
- * Differ to {@link MangedLedgerInterceptorImplTest}, this test can call {@link ManagedLedgerImpl}'s methods modified
+ * Differ to {@link ManagedLedgerInterceptorImplTest}, this test can call {@link ManagedLedgerImpl}'s methods modified
  * by "default".
  */
 @Slf4j
 @Test(groups = "broker")
-public class MangedLedgerInterceptorImplTest2 extends MockedBookKeeperTestCase {
+public class ManagedLedgerInterceptorImplTest2 extends MockedBookKeeperTestCase {
 
-    public static void switchLedgerManually(ManagedLedgerImpl ledger){
+    private ManagedLedgerImpl ledger;
+
+
+    @BeforeMethod
+    public void setup() throws Exception {
+        final String mlName = "ml1";
+
+        // Registry interceptor.
+        ManagedLedgerConfig config = new ManagedLedgerConfig();
+        Set<ManagedLedgerPayloadProcessor> processors = new HashSet<>();
+        processors.add(new TestPayloadProcessor());
+        ManagedLedgerInterceptor interceptor = new ManagedLedgerInterceptorImpl(new HashSet<>(), processors);
+        config.setManagedLedgerInterceptor(interceptor);
+        config.setMaxEntriesPerLedger(100);
+
+        // Open the ledger.
+        ledger = (ManagedLedgerImpl) factory.open(mlName, config);
+    }
+
+    public void switchLedgerManually() {
         LedgerHandle originalLedgerHandle = ledger.currentLedger;
         ledger.ledgerClosed(ledger.currentLedger);
         ledger.createLedgerAfterClosed();
@@ -52,34 +72,23 @@ public static void switchLedgerManually(ManagedLedgerImpl ledger){
 
     @Test
     public void testCurrentLedgerSizeCorrectIfHasInterceptor() throws Exception {
-        final String mlName = "ml1";
         final String cursorName = "cursor1";
 
-        // Registry interceptor.
-        ManagedLedgerConfig config = new ManagedLedgerConfig();
-        Set<ManagedLedgerPayloadProcessor> processors = new HashSet();
-        processors.add(new TestPayloadProcessor());
-        ManagedLedgerInterceptor interceptor = new ManagedLedgerInterceptorImpl(new HashSet(), processors);
-        config.setManagedLedgerInterceptor(interceptor);
-        config.setMaxEntriesPerLedger(100);
-
         // Add one entry.
-        ManagedLedgerImpl ledger = (ManagedLedgerImpl) factory.open(mlName, config);
         ManagedCursorImpl cursor = (ManagedCursorImpl) ledger.openCursor(cursorName);
         ledger.addEntry(new byte[1]);
 
         // Mark "currentLedgerSize" and switch ledger.
         long currentLedgerSize = ledger.getCurrentLedgerSize();
-        switchLedgerManually(ledger);
+        switchLedgerManually();
 
         // verify.
-        assertEquals(currentLedgerSize, MangedLedgerInterceptorImplTest.calculatePreciseSize(ledger));
+        assertEquals(currentLedgerSize, ManagedLedgerInterceptorImplTest.calculatePreciseSize(ledger));
 
         // cleanup.
         cursor.close();
         ledger.close();
         factory.getEntryCacheManager().clear();
         factory.shutdown();
-        config.setManagedLedgerInterceptor(null);
     }
 }
diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/admin/v1/V1_AdminApiTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/admin/v1/V1_AdminApiTest.java
index 43ec01f47f614..c3e40a191ddec 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/admin/v1/V1_AdminApiTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/admin/v1/V1_AdminApiTest.java
@@ -148,6 +148,7 @@ public void setup() throws Exception {
         conf.setTlsCertificateFilePath(BROKER_CERT_FILE_PATH);
         conf.setTlsKeyFilePath(BROKER_KEY_FILE_PATH);
         conf.setNumExecutorThreadPoolSize(5);
+        conf.setLoadBalancerOverrideBrokerNicSpeedGbps(Optional.of(1.0d));
 
         super.internalSetup();
 
diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/MangedLedgerInterceptorImplTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/ManagedLedgerInterceptorImplTest.java
similarity index 99%
rename from pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/MangedLedgerInterceptorImplTest.java
rename to pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/ManagedLedgerInterceptorImplTest.java
index 7d164b68147ab..9b3de199da219 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/MangedLedgerInterceptorImplTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/intercept/ManagedLedgerInterceptorImplTest.java
@@ -59,8 +59,8 @@
 import static org.testng.Assert.assertNotNull;
 
 @Test(groups = "broker")
-public class MangedLedgerInterceptorImplTest  extends MockedBookKeeperTestCase {
-    private static final Logger log = LoggerFactory.getLogger(MangedLedgerInterceptorImplTest.class);
+public class ManagedLedgerInterceptorImplTest extends MockedBookKeeperTestCase {
+    private static final Logger log = LoggerFactory.getLogger(ManagedLedgerInterceptorImplTest.class);
 
     public static class TestPayloadProcessor implements ManagedLedgerPayloadProcessor {
         @Override
diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/ExtensibleLoadManagerCloseTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/ExtensibleLoadManagerCloseTest.java
index 41413f3e3a913..2ea1d96f992fd 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/ExtensibleLoadManagerCloseTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/ExtensibleLoadManagerCloseTest.java
@@ -79,6 +79,7 @@ private ServiceConfiguration brokerConfig() {
         config.setLoadManagerClassName(ExtensibleLoadManagerImpl.class.getName());
         config.setLoadBalancerDebugModeEnabled(true);
         config.setBrokerShutdownTimeoutMs(100);
+        config.setLoadBalancerOverrideBrokerNicSpeedGbps(Optional.of(1.0d));
         return config;
     }
 
diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/LoadManagerFailFastTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/LoadManagerFailFastTest.java
index a400bf733e557..c514567420059 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/LoadManagerFailFastTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/loadbalance/extensions/LoadManagerFailFastTest.java
@@ -50,6 +50,7 @@ protected void setup() throws Exception {
         config.setBrokerServicePort(Optional.of(0));
         config.setWebServicePort(Optional.of(0));
         config.setMetadataStoreUrl("zk:localhost:" + zkPort);
+        config.setLoadBalancerOverrideBrokerNicSpeedGbps(Optional.of(1.0d));
     }
 
     @AfterClass