HDFS-12185. Ozone: Fix Leaking in TestXceiverClientManager. Contributed by Xiaoyu Yao.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/scm/TestXceiverClientManager.java

@@ -19,6 +19,7 @@ package org.apache.hadoop.ozone.scm;
 
 import com.google.common.cache.Cache;
 import org.apache.commons.lang.RandomStringUtils;
+import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.ozone.MiniOzoneCluster;
 import org.apache.hadoop.ozone.OzoneConfiguration;
 import org.apache.hadoop.ozone.OzoneConsts;
@@ -29,6 +30,7 @@ import org.apache.hadoop.scm.protocolPB
     .StorageContainerLocationProtocolClientSideTranslatorPB;
 import org.apache.hadoop.scm.storage.ContainerProtocolCalls;
 import org.junit.Assert;
+import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
@@ -61,6 +63,11 @@ public class TestXceiverClientManager {
         .createStorageContainerLocationClient();
   }
 
+  @AfterClass
+  public static void shutdown() {
+    IOUtils.cleanup(null, cluster, storageContainerLocationClient);
+  }
+
   @Test
   public void testCaching() throws IOException {
     OzoneConfiguration conf = new OzoneConfiguration();