diff --git a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/api/BookKeeper.java b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/api/BookKeeper.java
index 6e0bffe3a0e..279cabb0327 100644
--- a/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/api/BookKeeper.java
+++ b/bookkeeper-server/src/main/java/org/apache/bookkeeper/client/api/BookKeeper.java
@@ -82,7 +82,7 @@ static BookKeeperBuilder newBuilder(final ClientConfiguration clientConfiguratio
     CompletableFuture<LedgerMetadata> getLedgerMetadata(long ledgerId);
 
     /**
-     * Return driver metadata service is available
+     * Return driver metadata service is available.
      *
      * @return the metadata service is available.
      */
diff --git a/bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/MetadataClientDriver.java b/bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/MetadataClientDriver.java
index 89919f0f769..d71c32f63e6 100644
--- a/bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/MetadataClientDriver.java
+++ b/bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/MetadataClientDriver.java
@@ -116,7 +116,7 @@ default CompletableFuture<Boolean> isHealthCheckEnabled() {
     }
 
     /**
-     * Return driver metadata service is available
+     * Return driver metadata service is available.
      *
      * @return the metadata service is available.
      */
diff --git a/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/api/DriverMetadataServiceAvailableTest.java b/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/api/DriverMetadataServiceAvailableTest.java
index 0bc5f28cc8d..228fab3a6a3 100644
--- a/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/api/DriverMetadataServiceAvailableTest.java
+++ b/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/api/DriverMetadataServiceAvailableTest.java
@@ -20,14 +20,13 @@
  */
 package org.apache.bookkeeper.client.api;
 
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
 import org.apache.bookkeeper.conf.ClientConfiguration;
 import org.apache.bookkeeper.test.BookKeeperClusterTestCase;
 import org.awaitility.Awaitility;
 import org.junit.Test;
 
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-
 /**
  * Bookkeeper Client API driver metadata service available test.
  */