HADOOP-17720. Replace Guava Sets usage by Hadoop's own Sets in HDFS (#3031)

Signed-off-by: Takanobu Asanuma <tasanuma@apache.org>

hadoop-hdfs-project/hadoop-hdfs-httpfs/pom.xml

@@ -343,6 +343,38 @@
           <excludeFilterFile>${basedir}/dev-support/findbugsExcludeFile.xml</excludeFilterFile>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <dependencies>
+          <dependency>
+            <groupId>de.skuzzle.enforcer</groupId>
+            <artifactId>restrict-imports-enforcer-rule</artifactId>
+            <version>${restrict-imports.enforcer.version}</version>
+          </dependency>
+        </dependencies>
+        <executions>
+          <execution>
+            <id>banned-illegal-imports</id>
+            <phase>process-sources</phase>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <restrictImports implementation="de.skuzzle.enforcer.restrictimports.rule.RestrictImports">
+                  <includeTestCode>true</includeTestCode>
+                  <reason>Use hadoop-common provided Sets rather than Guava provided Sets</reason>
+                  <bannedImports>
+                    <bannedImport>org.apache.hadoop.thirdparty.com.google.common.collect.Sets</bannedImport>
+                    <bannedImport>com.google.common.collect.Sets</bannedImport>
+                  </bannedImports>
+                </restrictImports>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 

hadoop-hdfs-project/hadoop-hdfs-httpfs/src/test/java/org/apache/hadoop/lib/service/security/DummyGroupMapping.java

@@ -23,9 +23,9 @@
 import java.util.List;
 import java.util.Set;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.security.GroupMappingServiceProvider;
 import org.apache.hadoop.test.HadoopUsersConfTestHelper;
+import org.apache.hadoop.util.Sets;
 
 public class DummyGroupMapping implements GroupMappingServiceProvider {
 

hadoop-hdfs-project/hadoop-hdfs-rbf/pom.xml

@@ -305,6 +305,38 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
           </filesets>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <dependencies>
+          <dependency>
+            <groupId>de.skuzzle.enforcer</groupId>
+            <artifactId>restrict-imports-enforcer-rule</artifactId>
+            <version>${restrict-imports.enforcer.version}</version>
+          </dependency>
+        </dependencies>
+        <executions>
+          <execution>
+            <id>banned-illegal-imports</id>
+            <phase>process-sources</phase>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <restrictImports implementation="de.skuzzle.enforcer.restrictimports.rule.RestrictImports">
+                  <includeTestCode>true</includeTestCode>
+                  <reason>Use hadoop-common provided Sets rather than Guava provided Sets</reason>
+                  <bannedImports>
+                    <bannedImport>org.apache.hadoop.thirdparty.com.google.common.collect.Sets</bannedImport>
+                    <bannedImport>com.google.common.collect.Sets</bannedImport>
+                  </bannedImports>
+                </restrictImports>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
   <profiles>

hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterPolicyProvider.java

@@ -30,6 +30,7 @@
 import org.apache.hadoop.hdfs.protocolPB.RouterPolicyProvider;
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.security.authorize.Service;
+import org.apache.hadoop.util.Sets;
 
 import org.junit.BeforeClass;
 import org.junit.Rule;
@@ -41,8 +42,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
-
 /**
  * Test suite covering RouterPolicyProvider. We expect that it contains a
  * security policy definition for every RPC protocol used in HDFS. The test

hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterUserMappings.java

@@ -18,7 +18,6 @@
 
 package org.apache.hadoop.hdfs.server.federation.router;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.fs.FileSystem;
@@ -40,6 +39,7 @@
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.LambdaTestUtils;
 import org.apache.hadoop.tools.GetUserMappingsProtocol;
+import org.apache.hadoop.util.Sets;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -437,6 +437,38 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
           </filesets>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <dependencies>
+          <dependency>
+            <groupId>de.skuzzle.enforcer</groupId>
+            <artifactId>restrict-imports-enforcer-rule</artifactId>
+            <version>${restrict-imports.enforcer.version}</version>
+          </dependency>
+        </dependencies>
+        <executions>
+          <execution>
+            <id>banned-illegal-imports</id>
+            <phase>process-sources</phase>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <restrictImports implementation="de.skuzzle.enforcer.restrictimports.rule.RestrictImports">
+                  <includeTestCode>true</includeTestCode>
+                  <reason>Use hadoop-common provided Sets rather than Guava provided Sets</reason>
+                  <bannedImports>
+                    <bannedImport>org.apache.hadoop.thirdparty.com.google.common.collect.Sets</bannedImport>
+                    <bannedImport>com.google.common.collect.Sets</bannedImport>
+                  </bannedImports>
+                </restrictImports>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java

@@ -73,6 +73,7 @@
 import org.apache.hadoop.hdfs.server.namenode.INodesInPath;
 import org.apache.hadoop.ipc.ProtobufRpcEngine;
 import org.apache.hadoop.security.AccessControlException;
+import org.apache.hadoop.util.Sets;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
@@ -107,7 +108,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.thirdparty.protobuf.BlockingService;
 
 @InterfaceAudience.Private

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutFlags.java

@@ -23,11 +23,6 @@
 
 import org.apache.hadoop.classification.InterfaceAudience;
 
-import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
-import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
-import org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableSet;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
-
 /**
  * LayoutFlags represent features which the FSImage and edit logs can either
  * support or not, independently of layout version.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalNodeSyncer.java

@@ -19,7 +19,6 @@
 
 import org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableList;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
@@ -40,6 +39,7 @@
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.Daemon;
+import org.apache.hadoop.util.Sets;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java

@@ -22,15 +22,12 @@
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_BLOCKPLACEMENTPOLICY_EXCLUDE_SLOW_NODES_ENABLED_DEFAULT;
 import static org.apache.hadoop.util.Time.monotonicNow;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.net.InetAddresses;
 
 import org.apache.hadoop.fs.StorageType;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.HadoopIllegalArgumentException;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -59,7 +56,10 @@
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.util.Daemon;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.Timer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java

@@ -20,7 +20,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.fs.StorageType;
@@ -33,6 +32,7 @@
 import org.apache.hadoop.hdfs.server.protocol.*;
 import org.apache.hadoop.hdfs.server.protocol.BlockECReconstructionCommand.BlockECReconstructionInfo;
 import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo.BlockStatus;
+import org.apache.hadoop.util.Sets;
 
 import org.slf4j.Logger;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolManager.java

@@ -28,12 +28,12 @@
 import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.util.Sets;
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.slf4j.Logger;
 
 /**
@@ -177,8 +177,8 @@ private void doRefreshNamenodes(
       throws IOException {
     assert Thread.holdsLock(refreshNamenodesLock);
 
-    Set<String> toRefresh = Sets.newLinkedHashSet();
+    Set<String> toRefresh = new LinkedHashSet<>();
-    Set<String> toAdd = Sets.newLinkedHashSet();
+    Set<String> toAdd = new LinkedHashSet<>();
     Set<String> toRemove;
     
     synchronized (this) {

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/checker/DatasetVolumeChecker.java

@@ -20,7 +20,6 @@
 
 import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.FutureCallback;
 import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.Futures;
 import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.ListenableFuture;
@@ -37,6 +36,7 @@
 import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi.VolumeCheckContext;
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.util.DiskChecker.DiskErrorException;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.Timer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java

@@ -119,12 +119,12 @@
 import org.apache.hadoop.util.DiskChecker.DiskOutOfSpaceException;
 import org.apache.hadoop.util.InstrumentedReadWriteLock;
 import org.apache.hadoop.util.ReflectionUtils;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.Time;
 import org.apache.hadoop.util.Timer;
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/JournalSet.java

@@ -40,10 +40,11 @@
 import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLog;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLogManifest;
+import org.apache.hadoop.util.Sets;
+
 import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 /**
  * Manages a collection of Journals. None of the methods are synchronized, it is

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNStorageRetentionManager.java

@@ -40,7 +40,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.ComparisonChain;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 /**
  * The NNStorageRetentionManager is responsible for inspecting the storage
@@ -192,7 +191,7 @@ private long getImageTxIdToRetain(
       return 0L;
     }
 
-    TreeSet<Long> imageTxIds = Sets.newTreeSet(Collections.reverseOrder());
+    TreeSet<Long> imageTxIds = new TreeSet<>(Collections.reverseOrder());
     for (FSImageFile image : images) {
       imageTxIds.add(image.getCheckpointTxId());
     }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java

@@ -21,7 +21,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 import java.util.Set;
 import org.apache.commons.logging.Log;
@@ -93,6 +92,7 @@
 import org.apache.hadoop.util.GenericOptionsParser;
 import org.apache.hadoop.util.JvmPauseMonitor;
 import org.apache.hadoop.util.ServicePlugin;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.util.Time;
 import org.apache.hadoop.util.GcTimeMonitor;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java

@@ -86,6 +86,7 @@
 import org.apache.hadoop.hdfs.server.namenode.ImageServlet;
 import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
+import org.apache.hadoop.util.Sets;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
@@ -148,7 +149,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 /**
  * This class creates a single-process DFS cluster for junit testing.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockStoragePolicy.java

@@ -25,7 +25,6 @@
 import java.util.*;
 
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.BlockStoragePolicySpi;
@@ -48,6 +47,7 @@
 import org.apache.hadoop.security.token.SecretManager;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.PathUtils;
+import org.apache.hadoop.util.Sets;
 import org.junit.Assert;
 import static org.junit.Assert.fail;
 import org.junit.Test;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUtil.java

@@ -80,12 +80,11 @@
 import org.apache.hadoop.security.alias.JavaKeyStoreProvider;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.LambdaTestUtils;
+import org.apache.hadoop.util.Sets;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
-
 public class TestDFSUtil {
 
   static final String NS1_NN_ADDR    = "ns1-nn.example.com:8020";

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestHDFSPolicyProvider.java

@@ -27,12 +27,12 @@
 import java.util.List;
 import java.util.Set;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.commons.lang3.ClassUtils;
 import org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer;
 import org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer;
 import org.apache.hadoop.hdfs.server.datanode.DataNode;
 import org.apache.hadoop.security.authorize.Service;
+import org.apache.hadoop.util.Sets;
 
 import org.junit.BeforeClass;
 import org.junit.Rule;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestHdfsAdmin.java

@@ -45,13 +45,12 @@
 import org.apache.hadoop.hdfs.protocol.OpenFilesIterator;
 import org.apache.hadoop.hdfs.protocol.OpenFilesIterator.OpenFilesType;
 import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
+import org.apache.hadoop.util.Sets;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
-
 public class TestHdfsAdmin {
   
   private static final Path TEST_PATH = new Path("/test");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/net/TestDFSNetworkTopology.java

@@ -17,10 +17,7 @@
  */
 package org.apache.hadoop.hdfs.net;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.DFSTestUtil;
@@ -29,10 +26,13 @@
 import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
 import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
 import org.apache.hadoop.net.Node;
+import org.apache.hadoop.util.Sets;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.Timeout;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.EnumMap;
 import java.util.HashMap;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/client/TestQJMWithFaults.java

@@ -37,8 +37,6 @@
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
 import org.apache.hadoop.hdfs.qjournal.MiniJournalCluster;
@@ -53,6 +51,7 @@
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.ipc.ProtobufRpcEngine2;
 import org.apache.hadoop.test.GenericTestUtils;
+import org.apache.hadoop.util.Sets;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
@@ -62,7 +61,8 @@
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Preconditions;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.slf4j.event.Level;
 
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestRefreshNamenodes.java

@@ -32,10 +32,10 @@
 import org.apache.hadoop.hdfs.MiniDFSNNTopology;
 import org.apache.hadoop.hdfs.MiniDFSNNTopology.NNConf;
 import org.apache.hadoop.hdfs.MiniDFSNNTopology.NSConf;
+import org.apache.hadoop.util.Sets;
 import org.junit.Test;
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 /**
  * Tests datanode refresh namenode list functionality.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/FSImageTestUtil.java

@@ -45,8 +45,6 @@
 import java.util.Set;
 
 import org.apache.commons.lang3.StringUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.fs.permission.FsPermission;
@@ -61,6 +59,7 @@
 import org.apache.hadoop.hdfs.util.Holder;
 import org.apache.hadoop.hdfs.util.MD5FileUtils;
 import org.apache.hadoop.io.IOUtils;
+import org.apache.hadoop.util.Sets;
 import org.mockito.Mockito;
 
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
@@ -68,8 +67,9 @@
 import org.apache.hadoop.thirdparty.com.google.common.collect.ImmutableSet;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.thirdparty.com.google.common.io.Files;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Utility functions for testing fsimage storage.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java

@@ -61,7 +61,6 @@
 
 import java.util.function.Supplier;
 import org.apache.commons.logging.impl.Log4JLogger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.ChecksumException;
 import org.apache.hadoop.fs.FSDataOutputStream;
@@ -119,6 +118,7 @@
 import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.test.GenericTestUtils;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.ToolRunner;
 import org.apache.log4j.Level;
 import org.apache.log4j.Logger;
@@ -128,8 +128,7 @@
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
-
+import org.slf4j.LoggerFactory;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 /**
  * A JUnit test for doing fsck.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNNStorageRetentionManager.java

@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.Collection;
 import java.util.Comparator;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -53,7 +54,6 @@
 import org.apache.hadoop.thirdparty.com.google.common.base.Joiner;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Lists;
 import org.apache.hadoop.thirdparty.com.google.common.collect.Maps;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 
 
 public class TestNNStorageRetentionManager {
@@ -306,7 +306,7 @@ private void runTest(TestCaseDescription tc) throws IOException {
     Mockito.verify(mockPurger, Mockito.atLeast(0))
       .markStale(staleLogsCaptor.capture());
 
-    Set<String> capturedPaths = Sets.newLinkedHashSet();
+    Set<String> capturedPaths = new LinkedHashSet<>();
     // Check images
     for (FSImageFile captured : imagesPurgedCaptor.getAllValues()) {
       capturedPaths.add(fileToPath(captured.getFile()));
@@ -336,9 +336,9 @@ private void runTest(TestCaseDescription tc) throws IOException {
 
   private class TestCaseDescription {
     private final Map<File, FakeRoot> dirRoots = Maps.newLinkedHashMap();
-    private final Set<File> expectedPurgedLogs = Sets.newLinkedHashSet();
+    private final Set<File> expectedPurgedLogs = new LinkedHashSet<>();
-    private final Set<File> expectedPurgedImages = Sets.newLinkedHashSet();
+    private final Set<File> expectedPurgedImages = new LinkedHashSet<>();
-    private final Set<File> expectedStaleLogs = Sets.newLinkedHashSet();
+    private final Set<File> expectedStaleLogs = new LinkedHashSet<>();
 
     private class FakeRoot {
       final NameNodeDirType type;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRecovery.java

@@ -33,8 +33,6 @@
 import java.util.Set;
 
 import org.apache.commons.io.FileUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -51,13 +49,14 @@
 import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.PathUtils;
+import org.apache.hadoop.util.Sets;
 import org.apache.hadoop.util.StringUtils;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
-
+import org.slf4j.Logger;
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
+import org.slf4j.LoggerFactory;
 
 /**
  * This tests data recovery mode for the NameNode.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestRefreshUserMappings.java

@@ -38,7 +38,6 @@
 import java.util.List;
 import java.util.Set;
 
-import org.apache.hadoop.thirdparty.com.google.common.collect.Sets;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -48,6 +47,7 @@
 import org.apache.hadoop.security.authorize.DefaultImpersonationProvider;
 import org.apache.hadoop.security.authorize.ProxyUsers;
 import org.apache.hadoop.test.GenericTestUtils;
+import org.apache.hadoop.util.Sets;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.event.Level;