Fixed checkstyle issues.

Author: nandakumar131

hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/interfaces/Handler.java

@@ -125,9 +125,9 @@ public abstract Container importContainer(
    * Exports container to the output stream.
    */
   public abstract void exportContainer(
-      final Container container,
-      final OutputStream outputStream,
-      final TarContainerPacker packer)
+      Container container,
+      OutputStream outputStream,
+      TarContainerPacker packer)
       throws IOException;
 
   /**

hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/statemachine/background/BlockDeletingService.java

@@ -23,6 +23,7 @@
 import org.apache.hadoop.hdds.scm.pipeline.PipelineID;
 import org.apache.hadoop.ozone.container.common.impl.ContainerData;
 import org.apache.hadoop.ozone.container.common.impl.TopNOrderedContainerDeletionChoosingPolicy;
+import org.apache.hadoop.ozone.container.common.interfaces.Container;
 import org.apache.hadoop.ozone.container.common.interfaces.ContainerDeletionChoosingPolicy;
 import org.apache.hadoop.ozone.container.common.transport.server.ratis.XceiverServerRatis;
 import org.apache.hadoop.ozone.container.keyvalue.KeyValueContainerData;
@@ -247,6 +248,9 @@ private class BlockDeletingTask
     @Override
     public BackgroundTaskResult call() throws Exception {
       ContainerBackgroundTaskResult crr = new ContainerBackgroundTaskResult();
+      final Container container = ozoneContainer.getContainerSet()
+          .getContainer(containerData.getContainerID());
+      container.writeLock();
       long startTime = Time.monotonicNow();
       // Scan container's db and get list of under deletion blocks
       try (ReferenceCountedDB meta = BlockUtils.getDB(containerData, conf)) {
@@ -313,6 +317,8 @@ public BackgroundTaskResult call() throws Exception {
         }
         crr.addAll(succeedBlocks);
         return crr;
+      } finally {
+        container.writeUnlock();
       }
     }
 

hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/TestContainerReplication.java

@@ -124,7 +124,8 @@ public void testContainerReplication() throws Exception {
     cluster.getStorageContainerManager().getScmNodeManager()
         .addDatanodeCommand(
             sourceDatanodes.get(0).getUuid(),
-            new CloseContainerCommand(containerId, sourcePipelines.getId(), true));
+            new CloseContainerCommand(containerId,
+                sourcePipelines.getId(), true));
 
     //WHEN: send the order to replicate the container
     cluster.getStorageContainerManager().getScmNodeManager()