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https://issues.apache.org/jira/browse/HADOOP-17115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17339830#comment-17339830
 ] 

Ahmed Hussein commented on HADOOP-17115:
----------------------------------------

Thanks [~vjasani]!
Sure feel free to work on it.

> Replace Guava initialization of Sets.newHashSet
> -----------------------------------------------
>
>                 Key: HADOOP-17115
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17115
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Ahmed Hussein
>            Assignee: Viraj Jasani
>            Priority: Major
>
> Unjustified usage of Guava API to initialize a {{HashSet}}. This should be 
> replaced by Java APIs.
> {code:java}
> Targets
>     Occurrences of 'Sets.newHashSet' in project
> Found Occurrences  (223 usages found)
>     org.apache.hadoop.crypto.key  (2 usages found)
>         TestValueQueue.java  (2 usages found)
>             testWarmUp()  (2 usages found)
>                 106 Assert.assertEquals(Sets.newHashSet("k1", "k2", "k3"),
>                 107 Sets.newHashSet(fillInfos[0].key,
>     org.apache.hadoop.crypto.key.kms  (6 usages found)
>         TestLoadBalancingKMSClientProvider.java  (6 usages found)
>             testCreation()  (6 usages found)
>                 86 
> assertEquals(Sets.newHashSet("http://host1:9600/kms/foo/v1/";),
>                 87 Sets.newHashSet(providers[0].getKMSUrl()));
>                 95 
> assertEquals(Sets.newHashSet("http://host1:9600/kms/foo/v1/";,
>                 98 Sets.newHashSet(providers[0].getKMSUrl(),
>                 108 
> assertEquals(Sets.newHashSet("http://host1:9600/kms/foo/v1/";,
>                 111 Sets.newHashSet(providers[0].getKMSUrl(),
>     org.apache.hadoop.crypto.key.kms.server  (1 usage found)
>         KMSAudit.java  (1 usage found)
>             59 static final Set<KMS.KMSOp> AGGREGATE_OPS_WHITELIST = 
> Sets.newHashSet(
>     org.apache.hadoop.fs.s3a  (1 usage found)
>         TestS3AAWSCredentialsProvider.java  (1 usage found)
>             testFallbackToDefaults()  (1 usage found)
>                 183 Sets.newHashSet());
>     org.apache.hadoop.fs.s3a.auth  (1 usage found)
>         AssumedRoleCredentialProvider.java  (1 usage found)
>             AssumedRoleCredentialProvider(URI, Configuration)  (1 usage found)
>                 113 Sets.newHashSet(this.getClass()));
>     org.apache.hadoop.fs.s3a.commit.integration  (1 usage found)
>         ITestS3ACommitterMRJob.java  (1 usage found)
>             test_200_execute()  (1 usage found)
>                 232 Set<String> expectedKeys = Sets.newHashSet();
>     org.apache.hadoop.fs.s3a.commit.staging  (5 usages found)
>         TestStagingCommitter.java  (3 usages found)
>             testSingleTaskMultiFileCommit()  (1 usage found)
>                 341 Set<String> keys = Sets.newHashSet();
>             runTasks(JobContext, int, int)  (1 usage found)
>                 603 Set<String> uploads = Sets.newHashSet();
>             commitTask(StagingCommitter, TaskAttemptContext, int)  (1 usage 
> found)
>                 640 Set<String> files = Sets.newHashSet();
>         TestStagingPartitionedTaskCommit.java  (2 usages found)
>             verifyFilesCreated(PartitionedStagingCommitter)  (1 usage found)
>                 148 Set<String> files = Sets.newHashSet();
>             buildExpectedList(StagingCommitter)  (1 usage found)
>                 188 Set<String> expected = Sets.newHashSet();
>     org.apache.hadoop.hdfs  (5 usages found)
>         DFSUtil.java  (2 usages found)
>             getNNServiceRpcAddressesForCluster(Configuration)  (1 usage found)
>                 615 Set<String> availableNameServices = Sets.newHashSet(conf
>             getNNLifelineRpcAddressesForCluster(Configuration)  (1 usage 
> found)
>                 660 Set<String> availableNameServices = Sets.newHashSet(conf
>         MiniDFSCluster.java  (1 usage found)
>             597 private Set<FileSystem> fileSystems = Sets.newHashSet();
>         TestDFSUtil.java  (2 usages found)
>             testGetNNServiceRpcAddressesForNsIds()  (2 usages found)
>                 1046 assertEquals(Sets.newHashSet("nn1"), internal);
>                 1049 assertEquals(Sets.newHashSet("nn1", "nn2"), all);
>     org.apache.hadoop.hdfs.net  (5 usages found)
>         TestDFSNetworkTopology.java  (5 usages found)
>             testChooseRandomWithStorageType()  (4 usages found)
>                 277 Sets.newHashSet("host2", "host4", "host5", "host6");
>                 278 Set<String> archiveUnderL1 = Sets.newHashSet("host1", 
> "host3");
>                 279 Set<String> ramdiskUnderL1 = Sets.newHashSet("host7");
>                 280 Set<String> ssdUnderL1 = Sets.newHashSet("host8");
>             testChooseRandomWithStorageTypeWithExcluded()  (1 usage found)
>                 363 Set<String> expectedSet = Sets.newHashSet("host4", 
> "host5");
>     org.apache.hadoop.hdfs.qjournal.server  (2 usages found)
>         JournalNodeSyncer.java  (2 usages found)
>             getOtherJournalNodeAddrs()  (1 usage found)
>                 276 HashSet<String> sharedEditsUri = Sets.newHashSet();
>             getJournalAddrList(String)  (1 usage found)
>                 318 Sets.newHashSet(jn.getBoundIpcAddress()));
>     org.apache.hadoop.hdfs.server.datanode  (5 usages found)
>         BlockPoolManager.java  (1 usage found)
>             doRefreshNamenodes(Map<String, Map<String, InetSocketAddress>>, 
> Map<String, Map<String, InetSocketAddress>>)  (1 usage found)
>                 198 toRemove = Sets.newHashSet(Sets.difference(
>         BPOfferService.java  (2 usages found)
>             refreshNNList(String, List<String>, ArrayList<InetSocketAddress>, 
> ArrayList<InetSocketAddress>)  (2 usages found)
>                 146 Set<InetSocketAddress> oldAddrs = Sets.newHashSet();
>                 150 Set<InetSocketAddress> newAddrs = Sets.newHashSet(addrs);
>         TestRefreshNamenodes.java  (2 usages found)
>             testRefreshNamenodes()  (2 usages found)
>                 74 Set<InetSocketAddress> nnAddrsFromCluster = 
> Sets.newHashSet();
>                 80 Set<InetSocketAddress> nnAddrsFromDN = Sets.newHashSet();
>     org.apache.hadoop.hdfs.server.datanode.fsdataset.impl  (1 usage found)
>         FsDatasetImpl.java  (1 usage found)
>             getInitialVolumeFailureInfos(Collection<StorageLocation>, 
> DataStorage)  (1 usage found)
>                 430 Set<StorageLocation> failedLocationSet = 
> Sets.newHashSetWithExpectedSize(
>     org.apache.hadoop.hdfs.server.namenode  (11 usages found)
>         FSImageTestUtil.java  (2 usages found)
>             assertFileContentsSame(File...)  (1 usage found)
>                 418 if (Sets.newHashSet(md5s.values()).size() > 1) {
>             assertFileContentsDifferent(int, File...)  (1 usage found)
>                 435 if (Sets.newHashSet(md5s.values()).size() != 
> expectedUniqueHashes) {
>         TestFsck.java  (6 usages found)
>             testFsckMove()  (5 usages found)
>                 388 new CorruptedTestFile(fileNames[0], Sets.newHashSet(0),
>                 390 new CorruptedTestFile(fileNames[1], Sets.newHashSet(2, 3),
>                 392 new CorruptedTestFile(fileNames[2], Sets.newHashSet(4),
>                 394 new CorruptedTestFile(fileNames[3], Sets.newHashSet(0, 1, 
> 2, 3),
>                 396 new CorruptedTestFile(fileNames[4], Sets.newHashSet(1, 2, 
> 3, 4),
>             testFsckMoveAfterCorruption()  (1 usage found)
>                 2217 Sets.newHashSet(0), dfsClient, numDatanodes, 
> dfsBlockSize);
>         TestNameNodeRecovery.java  (3 usages found)
>             getValidTxIds()  (1 usage found)
>                 303 return Sets.newHashSet(0L);
>             getValidTxIds()  (1 usage found)
>                 345 return Sets.newHashSet(0L);
>             getValidTxIds()  (1 usage found)
>                 391 return Sets.newHashSet(1L , 2L, 3L, 5L, 6L, 7L, 8L, 9L, 
> 10L);
>     org.apache.hadoop.mapred  (1 usage found)
>         TestMRTimelineEventHandling.java  (1 usage found)
>             checkNewTimelineEvent(ApplicationId, ApplicationReport, String)  
> (1 usage found)
>                 302 Set<String> cfgsToCheck = Sets.newHashSet("dummy_conf1", 
> "dummy_conf2",
>     org.apache.hadoop.mapreduce.lib.input  (2 usages found)
>         TestFileInputFormat.java  (2 usages found)
>             verifyFileStatuses(List<Path>, List<FileStatus>, FileSystem)  (1 
> usage found)
>                 408 Set<Path> expectedPathSet = 
> Sets.newHashSet(fqExpectedPaths);
>             verifySplits(List<String>, List<InputSplit>)  (1 usage found)
>                 426 Set<String> expectedSet = Sets.newHashSet(expected);
>     org.apache.hadoop.mapreduce.v2.app.webapp  (1 usage found)
>         TestAMWebServices.java  (1 usage found)
>             configureServlets()  (1 usage found)
>                 78 appContext.setBlacklistedNodes(Sets.newHashSet("badnode1", 
> "badnode2"));
>     org.apache.hadoop.mapreduce.v2.hs.webapp  (4 usages found)
>         TestHsWebServicesLogs.java  (4 usages found)
>             testGetAggregatedLogsMetaForFinishedApp()  (1 usage found)
>                 302 Set<String> expectedIdStrings = Sets.newHashSet(
>             testGetAggregatedLogsMetaForRunningApp()  (1 usage found)
>                 335 Set<String> expectedIdStrings = Sets.newHashSet(
>             testGetAggregatedLogsMetaForFinishedAppAttempt()  (1 usage found)
>                 368 Set<String> expectedIdStrings = Sets.newHashSet(
>             testGetAggregatedLogsMetaForRunningAppAttempt()  (1 usage found)
>                 401 Set<String> expectedIdStrings = Sets.newHashSet(
>     org.apache.hadoop.metrics2.lib  (2 usages found)
>         MutableRates.java  (1 usage found)
>             47 private final Set<Class<?>> protocolCache = Sets.newHashSet();
>         MutableRatesWithAggregation.java  (1 usage found)
>             55 private final Set<Class<?>> protocolCache = Sets.newHashSet();
>     org.apache.hadoop.tools  (2 usages found)
>         CopyListing.java  (2 usages found)
>             validateFinalListing(Path, DistCpContext)  (2 usages found)
>                 166 Set<URI> aclSupportCheckFsSet = Sets.newHashSet();
>                 167 Set<URI> xAttrSupportCheckFsSet = Sets.newHashSet();
>     org.apache.hadoop.tools.dynamometer  (3 usages found)
>         TestDynamometerInfra.java  (3 usages found)
>             setupClass()  (3 usages found)
>                 272 Sets.newHashSet(NAMENODE_NODELABEL, DATANODE_NODELABEL));
>                 275 Sets.newHashSet(NAMENODE_NODELABEL));
>                 277 Sets.newHashSet(DATANODE_NODELABEL));
>     org.apache.hadoop.yarn.api  (1 usage found)
>         BasePBImplRecordsTest.java  (1 usage found)
>             genTypeValue(Type)  (1 usage found)
>                 115 ret = Sets.newHashSet(genTypeValue(params[0]));
>     org.apache.hadoop.yarn.api.protocolrecords.impl.pb  (1 usage found)
>         GetNodesToLabelsResponsePBImpl.java  (1 usage found)
>             initNodeToLabels()  (1 usage found)
>                 70 Sets.newHashSet(c.getNodeLabelsList()));
>     org.apache.hadoop.yarn.api.resource  (3 usages found)
>         TestPlacementConstraintParser.java  (3 usages found)
>             testTargetExpressionParser()  (1 usage found)
>                 116 Set<TargetExpression> expectedTargetExpressions = 
> Sets.newHashSet(
>             testCardinalityConstraintParser()  (1 usage found)
>                 169 Set<TargetExpression> expectedTargetExpressions = 
> Sets.newHashSet(
>             testParseAllocationTagNameSpace()  (1 usage found)
>                 583 Set<TargetExpression> expectedTargetExpressions = 
> Sets.newHashSet(
>     org.apache.hadoop.yarn.client.cli  (10 usages found)
>         TestYarnCLI.java  (10 usages found)
>             testGetApplications()  (10 usages found)
>                 410 Sets.newHashSet("tag1", "tag3"), false, 
> Priority.UNDEFINED, "", "");
>                 421 null, Sets.newHashSet("tag2", "tag3"), false, 
> Priority.UNDEFINED,
>                 431 null, Sets.newHashSet("tag1", "tag4"), false, 
> Priority.UNDEFINED,
>                 441 "NON-MAPREDUCE", null, Sets.newHashSet("tag1"), false,
>                 451 Sets.newHashSet("tag2", "tag4"), false, 
> Priority.UNDEFINED, "", "");
>                 756 Set<String> appTag1 = Sets.newHashSet("tag1");
>                 829 Set<String> appType9 = Sets.newHashSet("YARN");
>                 830 Set<String> appTag2 = Sets.newHashSet("tag3");
>                 858 Set<String> appType10 = Sets.newHashSet("HIVE");
>                 859 Set<String> appTag3 = Sets.newHashSet("tag4");
>     org.apache.hadoop.yarn.logaggregation  (1 usage found)
>         AggregatedLogFormat.java  (1 usage found)
>             getFileCandidates(Set<File>, boolean)  (1 usage found)
>                 366 return Sets.newHashSet(mask);
>     org.apache.hadoop.yarn.logaggregation.filecontroller  (1 usage found)
>         LogAggregationFileController.java  (1 usage found)
>             cleanOldLogs(Path, NodeId, UserGroupInformation)  (1 usage found)
>                 545 status = Sets.newHashSet(mask);
>     org.apache.hadoop.yarn.logaggregation.filecontroller.ifile  (1 usage 
> found)
>         LogAggregationIndexedFileController.java  (1 usage found)
>             parseCheckSumFiles(List<FileStatus>)  (1 usage found)
>                 718 status = Sets.newHashSet(mask);
>     org.apache.hadoop.yarn.nodelabels  (7 usages found)
>         NodeLabelTestBase.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 123 Set<E> set = Sets.newHashSet(elements);
>         TestCommonNodeLabelsManager.java  (6 usages found)
>             testAddRemovelabel()  (5 usages found)
>                 65 verifyNodeLabelAdded(Sets.newHashSet("hello"), 
> mgr.lastAddedlabels);
>                 69 verifyNodeLabelAdded(Sets.newHashSet("hello1", "world1"), 
> mgr.lastAddedlabels);
>                 72 Sets.newHashSet("hello", "world", "hello1", "world1")));
>                 103 assertCollectionEquals(Sets.newHashSet("hello"), 
> mgr.lastRemovedlabels);
>                 109 
> Assert.assertTrue(mgr.lastRemovedlabels.containsAll(Sets.newHashSet(
>             testAddlabelWithCase()  (1 usage found)
>                 118 verifyNodeLabelAdded(Sets.newHashSet("HeLlO"), 
> mgr.lastAddedlabels);
>     org.apache.hadoop.yarn.nodelabels.store.op  (1 usage found)
>         RemoveClusterLabelOp.java  (1 usage found)
>             write(OutputStream, CommonNodeLabelsManager)  (1 usage found)
>                 48 
> .newInstance(Sets.newHashSet(labels.iterator()))).getProto()
>     org.apache.hadoop.yarn.server.api.protocolrecords  (1 usage found)
>         TestProtocolRecords.java  (1 usage found)
>             testNodeHeartBeatRequest()  (1 usage found)
>                 185 Sets.newHashSet(NodeAttribute.newInstance("attributeA",
>     org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb  (1 usage found)
>         ReplaceLabelsOnNodeRequestPBImpl.java  (1 usage found)
>             initNodeToLabels()  (1 usage found)
>                 66 Sets.newHashSet(c.getNodeLabelsList()));
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer  (2 
> usages found)
>         TestResourceLocalizationService.java  (2 usages found)
>             doLocalization(ResourceLocalizationService, DrainDispatcher, 
> DummyExecutor, DeletionService)  (1 usage found)
>                 1400 Sets.newHashSet(new Path(locPath1), new Path(locPath1 + 
> "_tmp"),
>             doLocalizationAfterCleanup(ResourceLocalizationService, 
> DrainDispatcher, DummyExecutor, DeletionService)  (1 usage found)
>                 1547 Sets.newHashSet(new Path(locPath1), new Path(locPath1 + 
> "_tmp"),
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation 
>  (1 usage found)
>         AppLogAggregatorImpl.java  (1 usage found)
>             doContainerLogAggregation(LogAggregationFileController, boolean, 
> boolean)  (1 usage found)
>                 674 this.uploadedFileMeta = Sets.newHashSet(mask);
>     
> org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.com.nec
>   (1 usage found)
>         TestNECVEPlugin.java  (1 usage found)
>             testFindDevicesWithUdev()  (1 usage found)
>                 388 .thenReturn(Sets.newHashSet(testDevice));
>     
> org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.fpga
>   (1 usage found)
>         FpgaDiscoverer.java  (1 usage found)
>             discover()  (1 usage found)
>                 123 Set<String> minors = Sets.newHashSet(allowed.split(","));
>     
> org.apache.hadoop.yarn.server.nodemanager.containermanager.resourceplugin.gpu 
>  (1 usage found)
>         GpuDiscoverer.java  (1 usage found)
>             lookupBinaryInDefaultDirsInternal()  (1 usage found)
>                 328 Set<String> triedBinaryPaths = Sets.newHashSet();
>     org.apache.hadoop.yarn.server.resourcemanager  (5 usages found)
>         TestAppManager.java  (1 usage found)
>             testEscapeApplicationSummary()  (1 usage found)
>                 977 
> when(app.getApplicationTags()).thenReturn(Sets.newHashSet("tag2", "tag1"));
>         TestClientRMService.java  (3 usages found)
>             testGetApplications()  (3 usages found)
>                 1442 tagSet = Sets.newHashSet(tags.get(0));
>                 1447 tagSet = Sets.newHashSet(tags.get(1));
>                 1452 tagSet = Sets.newHashSet(tags.get(2));
>         TestRMRestart.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 2587 Set<E> set = Sets.newHashSet(elements);
>     org.apache.hadoop.yarn.server.resourcemanager.nodelabels  (11 usages 
> found)
>         TestNodeAttributesManager.java  (11 usages found)
>             testAddNodeAttributes()  (2 usages found)
>                 132 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[0]));
>                 138 
> .getClusterNodeAttributes(Sets.newHashSet("non_exist_prefix"));
>             testRemoveNodeAttributes()  (4 usages found)
>                 219 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[0]));
>                 222 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[1]));
>                 225 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[2]));
>                 263 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[0]));
>             testReplaceNodeAttributes()  (5 usages found)
>                 299 Sets.newHashSet(NodeAttribute.PREFIX_DISTRIBUTED, 
> PREFIXES[0]));
>                 313 Sets.newHashSet(NodeAttribute.PREFIX_DISTRIBUTED, 
> PREFIXES[0]));
>                 340 Sets.newHashSet(NodeAttribute.PREFIX_DISTRIBUTED));
>                 357 .getClusterNodeAttributes(Sets.newHashSet(PREFIXES[1]));
>                 360 .getClusterNodeAttributes(Sets.newHashSet(
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler  (5 usages found)
>         TestAbstractYarnScheduler.java  (3 usages found)
>             testContainerReleaseWithAllocationTags()  (2 usages found)
>                 469 Sets.newHashSet(testTag1),
>                 477 Sets.newHashSet(testTag2),
>             testNodeRemovedWithAllocationTags()  (1 usage found)
>                 578 Sets.newHashSet(testTag1),
>         TestSchedulerUtils.java  (2 usages found)
>             testValidateResourceRequestWithErrorLabelsPermission()  (1 usage 
> found)
>                 246 Set<String> queueAccessibleNodeLabels = Sets.newHashSet();
>             testNormalizeNodeLabelExpression()  (1 usage found)
>                 795 Set<String> queueAccessibleNodeLabels = Sets.newHashSet();
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity  (8 
> usages found)
>         CapacitySchedulerTestBase.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 56 Set<E> set = Sets.newHashSet(elements);
>         TestApplicationLimits.java  (1 usage found)
>             toSet(String...)  (1 usage found)
>                 790 Set<String> set = Sets.newHashSet(elements);
>         TestCapacityScheduler.java  (1 usage found)
>             testParseQueueWithAbsoluteResource()  (1 usage found)
>                 1042 Sets.newHashSet(labelName));
>         TestCapacitySchedulerMaxParallelApps.java  (1 usage found)
>             executeCommonStepsAndChecks()  (1 usage found)
>                 200 Sets.newHashSet(
>         TestCapacitySchedulerNodeLabelUpdate.java  (1 usage found)
>             toSet(String...)  (1 usage found)
>                 144 Set<String> set = Sets.newHashSet(elements);
>         TestNodeLabelContainerAllocation.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 157 Set<E> set = Sets.newHashSet(elements);
>         TestUtils.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 262 Set<E> set = Sets.newHashSet(elements);
>         TestWorkPreservingRMRestartForNodeLabel.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 77 Set<E> set = Sets.newHashSet(elements);
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.constraint  (3 
> usages found)
>         TestPlacementConstraintManagerService.java  (3 usages found)
>             testGetRequestConstraint()  (3 usages found)
>                 209 Sets.newHashSet("not_exist_tag"), null);
>                 228 Sets.newHashSet(sourceTag1), null);
>                 256 Sets.newHashSet(sourceTag1), c1);
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair  (2 usages 
> found)
>         TestFairScheduler.java  (1 usage found)
>             testGetAppsInQueue()  (1 usage found)
>                 4455 Set<ApplicationAttemptId> appAttIds = 
> Sets.newHashSet(apps.get(0), apps.get(1));
>         TestQueueManager.java  (1 usage found)
>             updateConfiguredLeafQueues(QueueManager, String...)  (1 usage 
> found)
>                 185 .addAll(Sets.newHashSet(confLeafQueues));
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.allocation  
> (1 usage found)
>         AllocationFileParser.java  (1 usage found)
>             81 Sets.newHashSet(QUEUE_MAX_RESOURCES_DEFAULT, 
> USER_MAX_APPS_DEFAULT,
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.converter  
> (8 usages found)
>         TestFSQueueConverter.java  (8 usages found)
>             testConvertQueueHierarchy()  (1 usage found)
>                 168 Sets.newHashSet("root",
>             testQueueMaxAMShare()  (1 usage found)
>                 192 Sets.newHashSet("root.admins.bob", "root.admins.alice"));
>             testQueueMaxParallelApps()  (1 usage found)
>                 208 Sets.newHashSet("root.admins.alice"));
>             testQueueMaxAllocations()  (1 usage found)
>                 232 Sets.newHashSet("root.admins", "root.users.john"));
>             testQueuePreemptionDisabled()  (1 usage found)
>                 251 Sets.newHashSet("root.admins.alice", "root.users.joe"));
>             testQueueAutoCreateChildQueue()  (2 usages found)
>                 319 Set<String> parentQueues = Sets.newHashSet(
>                 323 Set<String> leafQueues = Sets.newHashSet(
>             64 Sets.newHashSet("root",
>     org.apache.hadoop.yarn.server.resourcemanager.webapp  (25 usages found)
>         ApplicationsRequestBuilder.java  (5 usages found)
>             34 private Set<String> statesQuery = Sets.newHashSet();
>             35 private Set<String> users = Sets.newHashSetWithExpectedSize(1);
>             36 private Set<String> queues = 
> Sets.newHashSetWithExpectedSize(1);
>             45 private Set<String> appTypes = Sets.newHashSet();
>             46 private Set<String> appTags = Sets.newHashSet();
>         RMWebAppFilter.java  (1 usage found)
>             71 private static final Set<String> NON_REDIRECTED_URIS = 
> Sets.newHashSet(
>         TestApplicationsRequestBuilder.java  (16 usages found)
>             testRequestWithValidStateQuery()  (1 usage found)
>                 86 
> Sets.newHashSet(YarnApplicationState.NEW_SAVING.toString());
>             testRequestWithEmptyStateQueries()  (1 usage found)
>                 96 .withStatesQuery(Sets.newHashSet()).build();
>             testRequestWithInvalidStateQueries()  (1 usage found)
>                 106 .withStatesQuery(Sets.newHashSet("a1", "a2", "")).build();
>             testRequestWithValidStateQueries()  (2 usages found)
>                 127 
> Sets.newHashSet(YarnApplicationState.NEW_SAVING.toString(),
>                 133 
> Sets.newHashSet(YarnApplicationState.NEW_SAVING.toString(),
>             testRequestWithUserQuery()  (1 usage found)
>                 165 expectedRequest.setUsers(Sets.newHashSet("user1"));
>             testRequestWithQueueQueryExistingQueue()  (1 usage found)
>                 196 expectedRequest.setQueues(Sets.newHashSet("queue1"));
>             testRequestWithQueueQueryNotExistingQueue()  (1 usage found)
>                 212 expectedRequest.setQueues(Sets.newHashSet("queue1"));
>             testRequestWithEmptyApplicationTypesQuery()  (2 usages found)
>                 487 .withApplicationTypes(Sets.newHashSet()).build();
>                 490 expectedRequest.setApplicationTypes(Sets.newHashSet());
>             testRequestWithValidApplicationTypesQuery()  (2 usages found)
>                 497 .withApplicationTypes(Sets.newHashSet("type1")).build();
>                 500 
> expectedRequest.setApplicationTypes(Sets.newHashSet("type1"));
>             testRequestWithEmptyApplicationTagsQuery()  (2 usages found)
>                 513 .withApplicationTags(Sets.newHashSet()).build();
>                 516 expectedRequest.setApplicationTags(Sets.newHashSet());
>             testRequestWithValidApplicationTagsQuery()  (2 usages found)
>                 523 .withApplicationTags(Sets.newHashSet("tag1")).build();
>                 526 
> expectedRequest.setApplicationTags(Sets.newHashSet("tag1"));
>         TestRMWebServiceAppsNodelabel.java  (1 usage found)
>             toSet(E...)  (1 usage found)
>                 242 Set<E> set = Sets.newHashSet(elements);
>         TestRMWebServicesApps.java  (1 usage found)
>             getApplicationIds(JSONArray)  (1 usage found)
>                 107 Set<String> ids = Sets.newHashSet();
>         TestRMWebServicesForCSWithPartitions.java  (1 usage found)
>             testPartitionInSchedulerActivities()  (1 usage found)
>                 273 .of(NodeId.newInstance("127.0.0.1", 0), 
> Sets.newHashSet(LABEL_LX)));
>     org.apache.hadoop.yarn.server.resourcemanager.webapp.fairscheduler  (4 
> usages found)
>         FairSchedulerJsonVerifications.java  (2 usages found)
>             FairSchedulerJsonVerifications(List<String>)  (1 usage found)
>                 49 this.customResourceTypes = 
> Sets.newHashSet(customResourceTypes);
>             42 Sets.newHashSet("minResources", "amUsedResources", 
> "amMaxResources",
>         FairSchedulerXmlVerifications.java  (2 usages found)
>             FairSchedulerXmlVerifications(List<String>)  (1 usage found)
>                 53 this.customResourceTypes = 
> Sets.newHashSet(customResourceTypes);
>             46 private static final Set<String> RESOURCE_FIELDS = 
> Sets.newHashSet(
>     org.apache.hadoop.yarn.server.resourcemanager.webapp.helper  (1 usage 
> found)
>         ResourceRequestsXmlVerifications.java  (1 usage found)
>             extractActualCustomResourceType(Element, List<String>)  (1 usage 
> found)
>                 85 Sets.newHashSet(expectedResourceTypes));
>     org.apache.hadoop.yarn.server.timeline  (3 usages found)
>         EntityGroupPlugInForTest.java  (3 usages found)
>             getTimelineEntityGroupId(String, NameValuePair, 
> Collection<NameValuePair>)  (1 usage found)
>                 39 return Sets.newHashSet(getStandardTimelineGroupId(appId));
>             getTimelineEntityGroupId(String, String)  (1 usage found)
>                 47 return Sets.newHashSet(getStandardTimelineGroupId(appId));
>             getTimelineEntityGroupId(String, SortedSet<String>, Set<String>)  
> (1 usage found)
>                 54 return Sets.newHashSet();
>     org.apache.hadoop.yarn.server.timelineservice.collector  (1 usage found)
>         TestTimelineCollector.java  (1 usage found)
>             testClearPreviousEntitiesOnAggregation()  (1 usage found)
>                 306 assertEquals(Sets.newHashSet("type"), 
> aggregationGroups.keySet());
>     
> org.apache.hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb  
> (1 usage found)
>         CosmosDBDocumentStoreReader.java  (1 usage found)
>             fetchEntityTypes(String, TimelineReaderContext)  (1 usage found)
>                 118 return Sets.newHashSet(client.queryDocuments(
>     org.apache.hadoop.yarn.server.timelineservice.reader  (38 usages found)
>         TestTimelineReaderWebServicesHBaseStorage.java  (16 usages found)
>             loadData()  (16 usages found)
>                 266 Sets.newHashSet("entity21", "entity22", "entity23", 
> "entity24"));
>                 267 isRelatedTo1.put("type4", Sets.newHashSet("entity41", 
> "entity42"));
>                 268 isRelatedTo1.put("type1", Sets.newHashSet("entity14", 
> "entity15"));
>                 270 Sets.newHashSet("entity31", "entity35", "entity32", 
> "entity33"));
>                 274 Sets.newHashSet("entity21", "entity22", "entity23", 
> "entity24"));
>                 275 relatesTo1.put("type4", Sets.newHashSet("entity41", 
> "entity42"));
>                 276 relatesTo1.put("type1", Sets.newHashSet("entity14", 
> "entity15"));
>                 278 Sets.newHashSet("entity31", "entity35", "entity32", 
> "entity33"));
>                 327 Sets.newHashSet("entity21", "entity22", "entity23", 
> "entity24"));
>                 328 isRelatedTo2.put("type5", Sets.newHashSet("entity51", 
> "entity52"));
>                 329 isRelatedTo2.put("type6", Sets.newHashSet("entity61", 
> "entity66"));
>                 330 isRelatedTo2.put("type3", Sets.newHashSet("entity31"));
>                 334 Sets.newHashSet("entity21", "entity22", "entity23", 
> "entity24"));
>                 335 relatesTo2.put("type5", Sets.newHashSet("entity51", 
> "entity52"));
>                 336 relatesTo2.put("type6", Sets.newHashSet("entity61", 
> "entity66"));
>                 337 relatesTo2.put("type3", Sets.newHashSet("entity31"));
>         TestTimelineReaderWebServicesUtils.java  (22 usages found)
>             testRelationFiltersParsing()  (22 usages found)
>                 721 "type1", Sets.newHashSet((Object)"entity11")),
>                 723 "type2", Sets.newHashSet((Object)"entity21", "entity22"))
>                 737 "type1", Sets.newHashSet((Object)"entity11")),
>                 739 "type2", Sets.newHashSet((Object)"entity21", "entity22"))
>                 743 "type3", Sets.newHashSet(
>                 746 "type1", Sets.newHashSet((Object)"entity11", "entity12"))
>                 758 "type1", Sets.newHashSet((Object)"entity11")),
>                 760 "type2", Sets.newHashSet((Object)"entity21", "entity22")),
>                 762 "type5", Sets.newHashSet((Object)"entity51"))
>                 766 "type3", Sets.newHashSet(
>                 769 "type1", Sets.newHashSet((Object)"entity11", "entity12"))
>                 784 "type1", Sets.newHashSet((Object)"entity11")),
>                 786 "type2", Sets.newHashSet(
>                 789 "type5", Sets.newHashSet((Object)"entity51"))
>                 793 "type3", Sets.newHashSet(
>                 796 "type1", Sets.newHashSet(
>                 803 "type11", Sets.newHashSet((Object)"entity111"))
>                 807 "type4", Sets.newHashSet((Object)"entity43", "entity44",
>                 810 "type7", Sets.newHashSet((Object)"entity71"))
>                 817 "type2", Sets.newHashSet((Object)"entity2")),
>                 819 "type8", Sets.newHashSet((Object)"entity88"))
>                 822 Sets.newHashSet((Object)"e", "e1"))
>     org.apache.hadoop.yarn.service  (1 usage found)
>         TestApiServer.java  (1 usage found)
>             testUpgradeSingleInstance()  (1 usage found)
>                 533 mockServerClient.setExpectedInstances(Sets.newHashSet(
>     org.apache.hadoop.yarn.service.utils  (2 usages found)
>         ServiceApiUtil.java  (2 usages found)
>             validateAndResolveCompsUpgrade(Service, Collection<String>)  (1 
> usage found)
>                 625 HashSet<String> requestedComps = 
> Sets.newHashSet(compNames);
>             validateAndResolveCompsStable(Service, Collection<String>)  (1 
> usage found)
>                 651 HashSet<String> requestedComps = 
> Sets.newHashSet(compNames);
>     org.apache.hadoop.yarn.service.webapp  (1 usage found)
>         ApiServer.java  (1 usage found)
>             updateComponent(HttpServletRequest, String, String, Component)  
> (1 usage found)
>                 374 Sets.newHashSet(componentName));
>     org.apache.hadoop.yarn.webapp.hamlet  (2 usages found)
>         HamletGen.java  (2 usages found)
>             67 final Set<String> endTagOptional = Sets.newHashSet();
>             68 final Set<String> inlineElements = Sets.newHashSet();
>     org.apache.hadoop.yarn.webapp.hamlet2  (2 usages found)
>         HamletGen.java  (2 usages found)
>             65 final Set<String> endTagOptional = Sets.newHashSet();
>             66 final Set<String> inlineElements = Sets.newHashSet();
>     patches  (4 usages found)
>         HADOOP-17101.001.patch  (2 usages found)
>             226      Set<Path> expectedPathSet = 
> Sets.newHashSet(fqExpectedPaths);
>             244      Set<String> expectedSet = Sets.newHashSet(expected);
>         HADOOP-17101.002.patch  (2 usages found)
>             456      Set<Path> expectedPathSet = 
> Sets.newHashSet(fqExpectedPaths);
>             474      Set<String> expectedSet = Sets.newHashSet(expected);
> {code}



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