[ 
https://issues.apache.org/jira/browse/HADOOP-17100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17160596#comment-17160596
 ] 

Hadoop QA commented on HADOOP-17100:
------------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 30m 
31s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green}  0m  
4s{color} | {color:green} No case conflicting files found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 146 new or modified 
test files. {color} |
|| || || || {color:brown} branch-3.3 Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  3m 
12s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 29m 
55s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 19m 
27s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  4m 
16s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 13m 
34s{color} | {color:green} branch-3.3 passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
35m  5s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  9m 
27s{color} | {color:green} branch-3.3 passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  0m 
52s{color} | {color:blue} Used deprecated FindBugs config; considering 
switching to SpotBugs. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 
29s{color} | {color:blue} branch/hadoop-build-tools no findbugs output file 
(findbugsXml.xml) {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
28s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 10m 
56s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 20m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 20m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  3m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 13m 
43s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  
2s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
16m  2s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  9m 
52s{color} | {color:green} the patch passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 
31s{color} | {color:blue} hadoop-build-tools has no data from findbugs {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
29s{color} | {color:green} hadoop-build-tools in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 10m 50s{color} 
| {color:red} hadoop-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
47s{color} | {color:green} hadoop-kms in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 
12s{color} | {color:green} hadoop-hdfs-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}154m 38s{color} 
| {color:red} hadoop-hdfs in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 10m 
55s{color} | {color:green} hadoop-hdfs-rbf in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 22m 
47s{color} | {color:green} hadoop-yarn-server-nodemanager in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
16s{color} | {color:green} hadoop-yarn-server-web-proxy in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 93m 
47s{color} | {color:green} hadoop-yarn-server-resourcemanager in the patch 
passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 26m 
45s{color} | {color:green} hadoop-yarn-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m  
2s{color} | {color:green} hadoop-yarn-server-router in the patch passed. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 22m 49s{color} 
| {color:red} hadoop-yarn-applications-distributedshell in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 
37s{color} | {color:green} hadoop-mapreduce-client-app in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  4m 
11s{color} | {color:green} hadoop-mapreduce-client-hs in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}122m 
47s{color} | {color:green} hadoop-mapreduce-client-jobclient in the patch 
passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 20m 
15s{color} | {color:green} hadoop-yarn-services-core in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 12m 
24s{color} | {color:green} hadoop-sls in the patch passed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  1m 
15s{color} | {color:red} The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}780m 33s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.security.TestGroupsCaching |
|   | hadoop.hdfs.TestSafeMode |
|   | hadoop.fs.contract.hdfs.TestHDFSContractMultipartUploader |
|   | hadoop.hdfs.server.namenode.TestAddOverReplicatedStripedBlocks |
|   | hadoop.hdfs.qjournal.server.TestJournalNodeSync |
|   | hadoop.hdfs.TestDFSInputStream |
|   | hadoop.hdfs.server.namenode.TestNamenodeCapacityReport |
|   | hadoop.yarn.applications.distributedshell.TestDistributedShell |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.40 ServerAPI=1.40 base: 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/artifact/out/Dockerfile
 |
| JIRA Issue | HADOOP-17100 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13007956/HADOOP-17100.branch-3.3.006.patch
 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite 
unit shadedclient xml findbugs checkstyle |
| uname | Linux ff9da2c7429d 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 
08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/hadoop.sh |
| git revision | branch-3.3 / 187b161 |
| Default Java | Private Build-1.8.0_252-8u252-b09-1~16.04-b09 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/artifact/out/patch-asflicense-problems.txt
 |
| Max. process+thread count | 2911 (vs. ulimit of 5500) |
| modules | C: hadoop-build-tools hadoop-common-project/hadoop-common 
hadoop-common-project/hadoop-kms hadoop-hdfs-project/hadoop-hdfs-client 
hadoop-hdfs-project/hadoop-hdfs hadoop-hdfs-project/hadoop-hdfs-rbf 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-web-proxy 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell
 hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
 hadoop-tools/hadoop-sls U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/17050/console |
| versions | git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |


This message was automatically generated.



> Replace Guava Supplier with Java8+ Supplier in Hadoop
> -----------------------------------------------------
>
>                 Key: HADOOP-17100
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17100
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Ahmed Hussein
>            Assignee: Ahmed Hussein
>            Priority: Major
>         Attachments: HADOOP-17100.001.patch, HADOOP-17100.002.patch, 
> HADOOP-17100.003.patch, HADOOP-17100.006.patch, 
> HADOOP-17100.branch-3.1.006.patch, HADOOP-17100.branch-3.2.006.patch, 
> HADOOP-17100.branch-3.3.006.patch
>
>
> Replacing Usage of {{guava.Supplier<>}} are in Unit tests 
> {{GenereicTestUtils.waitFor()}} in Hadoop project.
>  * To make things more convenient for reviewers, I decided:
>  ** Not to replace Object instantiation by lambda expressions because this 
> will increase the patch size significantly and require code adjustments to 
> pass the checkstyle scripts.
>  ** Not to refactor the imports because this will make reading the patch more 
> difficult.
>  * Merge should be done to the following branches: trunk, branch-3.3, 
> branch-3.2, branch-3.1
> The task is straightforward because {{java.util.Supplier}} has the same API 
> as {{guava.Supplier<>}} and the vast majority of usage comes from Test-units.
>  Therefore, we need only to do the following a "one-line" change in all 147 
> files.
> {code:bash}
>  
> -import com.google.common.base.Supplier;
> +import java.util.function.Supplier;
> {code}
> The code change needs to be applied to the following list of files:
> {code:java}
>  
> Targets 
>     Occurrences of 'com.google.common.base.Supplier' in project with mask 
> '*.java' 
> Found Occurrences (146 usages found) 
>     org.apache.hadoop.conf (1 usage found) 
>         TestReconfiguration.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.crypto.key.kms.server (1 usage found) 
>         TestKMS.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.fs (2 usages found) 
>         FCStatisticsBaseTest.java (1 usage found) 
>             40 import com.google.common.base.Supplier; 
>         TestEnhancedByteBufferAccess.java (1 usage found) 
>             75 import com.google.common.base.Supplier; 
>     org.apache.hadoop.fs.viewfs (1 usage found) 
>         TestViewFileSystemWithTruncate.java (1 usage found) 
>             23 import com.google.common.base.Supplier; 
>     org.apache.hadoop.ha (1 usage found) 
>         TestZKFailoverController.java (1 usage found) 
>             25 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs (20 usages found) 
>         DFSTestUtil.java (1 usage found) 
>             79 import com.google.common.base.Supplier; 
>         MiniDFSCluster.java (1 usage found) 
>             78 import com.google.common.base.Supplier; 
>         TestBalancerBandwidth.java (1 usage found) 
>             29 import com.google.common.base.Supplier; 
>         TestClientProtocolForPipelineRecovery.java (1 usage found) 
>             30 import com.google.common.base.Supplier; 
>         TestDatanodeRegistration.java (1 usage found) 
>             44 import com.google.common.base.Supplier; 
>         TestDataTransferKeepalive.java (1 usage found) 
>             47 import com.google.common.base.Supplier; 
>         TestDeadNodeDetection.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestDecommission.java (1 usage found) 
>             41 import com.google.common.base.Supplier; 
>         TestDFSShell.java (1 usage found) 
>             37 import com.google.common.base.Supplier; 
>         TestEncryptedTransfer.java (1 usage found) 
>             35 import com.google.common.base.Supplier; 
>         TestEncryptionZonesWithKMS.java (1 usage found) 
>             22 import com.google.common.base.Supplier; 
>         TestFileCorruption.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestLeaseRecovery2.java (1 usage found) 
>             32 import com.google.common.base.Supplier; 
>         TestLeaseRecoveryStriped.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestMaintenanceState.java (1 usage found) 
>             63 import com.google.common.base.Supplier; 
>         TestPread.java (1 usage found) 
>             61 import com.google.common.base.Supplier; 
>         TestQuota.java (1 usage found) 
>             39 import com.google.common.base.Supplier; 
>         TestReplaceDatanodeOnFailure.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestReplication.java (1 usage found) 
>             27 import com.google.common.base.Supplier; 
>         TestSafeMode.java (1 usage found) 
>             62 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.client.impl (2 usages found) 
>         TestBlockReaderLocalMetrics.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestLeaseRenewer.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.qjournal (1 usage found) 
>         MiniJournalCluster.java (1 usage found) 
>             31 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.qjournal.client (1 usage found) 
>         TestIPCLoggerChannel.java (1 usage found) 
>             43 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.qjournal.server (1 usage found) 
>         TestJournalNodeSync.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.blockmanagement (7 usages found) 
>         TestBlockManagerSafeMode.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestBlockReportRateLimiting.java (1 usage found) 
>             25 import com.google.common.base.Supplier; 
>         TestNameNodePrunesMissingStorages.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestPendingInvalidateBlock.java (1 usage found) 
>             43 import com.google.common.base.Supplier; 
>         TestPendingReconstruction.java (1 usage found) 
>             34 import com.google.common.base.Supplier; 
>         TestRBWBlockInvalidation.java (1 usage found) 
>             49 import com.google.common.base.Supplier; 
>         TestSlowDiskTracker.java (1 usage found) 
>             48 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.datanode (13 usages found) 
>         DataNodeTestUtils.java (1 usage found) 
>             40 import com.google.common.base.Supplier; 
>         TestBlockRecovery.java (1 usage found) 
>             120 import com.google.common.base.Supplier; 
>         TestBlockScanner.java (1 usage found) 
>             43 import com.google.common.base.Supplier; 
>         TestBPOfferService.java (1 usage found) 
>             92 import com.google.common.base.Supplier; 
>         TestCorruptMetadataFile.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestDataNodeLifeline.java (1 usage found) 
>             74 import com.google.common.base.Supplier; 
>         TestDataNodeMetrics.java (1 usage found) 
>             37 import com.google.common.base.Supplier; 
>         TestDataNodeMetricsLogger.java (1 usage found) 
>             57 import com.google.common.base.Supplier; 
>         TestDataNodeMultipleRegistrations.java (1 usage found) 
>             33 import com.google.common.base.Supplier; 
>         TestDataNodeMXBean.java (1 usage found) 
>             31 import com.google.common.base.Supplier; 
>         TestDatanodeProtocolRetryPolicy.java (1 usage found) 
>             32 import com.google.common.base.Supplier; 
>         TestDataNodeVolumeFailure.java (1 usage found) 
>             94 import com.google.common.base.Supplier; 
>         TestDiskError.java (1 usage found) 
>             31 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.datanode.checker (1 usage found) 
>         TestThrottledAsyncChecker.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.datanode.fsdataset.impl (7 usages found) 
>         TestCacheByPmemMappableBlockLoader.java (1 usage found) 
>             65 import com.google.common.base.Supplier; 
>         TestFsDatasetCache.java (1 usage found) 
>             94 import com.google.common.base.Supplier; 
>         TestFsDatasetImpl.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestFsVolumeList.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestLazyPersistLockedMemory.java (1 usage found) 
>             22 import com.google.common.base.Supplier; 
>         TestPmemCacheRecovery.java (1 usage found) 
>             65 import com.google.common.base.Supplier; 
>         TestSpaceReservation.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.datanode.metrics (1 usage found) 
>         TestDataNodeOutlierDetectionViaMetrics.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.datanode.web.webhdfs (1 usage found) 
>         TestDataNodeUGIProvider.java (1 usage found) 
>             54 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.diskbalancer (2 usages found) 
>         TestDiskBalancer.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestDiskBalancerWithMockMover.java (1 usage found) 
>             23 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.federation (1 usage found) 
>         FederationTestUtils.java (1 usage found) 
>             95 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.federation.router (4 usages found) 
>         TestRouterAdminCLI.java (1 usage found) 
>             67 import com.google.common.base.Supplier; 
>         TestRouterQuota.java (1 usage found) 
>             77 import com.google.common.base.Supplier; 
>         TestRouterRpc.java (1 usage found) 
>             131 import com.google.common.base.Supplier; 
>         TestRouterRPCClientRetries.java (1 usage found) 
>             57 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.mover (1 usage found) 
>         TestMover.java (1 usage found) 
>             98 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.namenode (17 usages found) 
>         TestAddStripedBlockInFBR.java (1 usage found) 
>             43 import com.google.common.base.Supplier; 
>         TestBackupNode.java (1 usage found) 
>             59 import com.google.common.base.Supplier; 
>         TestCacheDirectives.java (1 usage found) 
>             99 import com.google.common.base.Supplier; 
>         TestCheckpoint.java (1 usage found) 
>             98 import com.google.common.base.Supplier; 
>         TestDeadDatanode.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestEditLogAutoroll.java (1 usage found) 
>             49 import com.google.common.base.Supplier; 
>         TestEditLogRace.java (1 usage found) 
>             41 import com.google.common.base.Supplier; 
>         TestFsck.java (1 usage found) 
>             62 import com.google.common.base.Supplier; 
>         TestFSNamesystemLock.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestMetaSave.java (1 usage found) 
>             33 import com.google.common.base.Supplier; 
>         TestNameNodeMetadataConsistency.java (1 usage found) 
>             33 import com.google.common.base.Supplier; 
>         TestNameNodeMetricsLogger.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestNameNodeMXBean.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestNameNodeStatusMXBean.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestPersistentStoragePolicySatisfier.java (1 usage found) 
>             40 import com.google.common.base.Supplier; 
>         TestReencryption.java (1 usage found) 
>             34 import com.google.common.base.Supplier; 
>         TestUpgradeDomainBlockPlacementPolicy.java (1 usage found) 
>             52 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.namenode.ha (11 usages found) 
>         HATestUtil.java (1 usage found) 
>             64 import com.google.common.base.Supplier; 
>         TestBootstrapStandby.java (1 usage found) 
>             30 import com.google.common.base.Supplier; 
>         TestDNFencing.java (1 usage found) 
>             32 import com.google.common.base.Supplier; 
>         TestDNFencingWithReplication.java (1 usage found) 
>             39 import com.google.common.base.Supplier; 
>         TestEditLogTailer.java (1 usage found) 
>             65 import com.google.common.base.Supplier; 
>         TestHASafeMode.java (1 usage found) 
>             75 import com.google.common.base.Supplier; 
>         TestPendingCorruptDnMessages.java (1 usage found) 
>             44 import com.google.common.base.Supplier; 
>         TestPipelinesFailover.java (1 usage found) 
>             65 import com.google.common.base.Supplier; 
>         TestStandbyCheckpoints.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         TestStandbyInProgressTail.java (1 usage found) 
>             52 import com.google.common.base.Supplier; 
>         TestStandbyIsHot.java (1 usage found) 
>             46 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.namenode.snapshot (1 usage found) 
>         TestRandomOpsWithSnapshots.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.namenode.sps (1 usage found) 
>         TestStoragePolicySatisfierWithStripedFile.java (1 usage found) 
>             55 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.server.sps (1 usage found) 
>         TestExternalStoragePolicySatisfier.java (1 usage found) 
>             101 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.shortcircuit (1 usage found) 
>         TestShortCircuitCache.java (1 usage found) 
>             93 import com.google.common.base.Supplier; 
>     org.apache.hadoop.hdfs.tools (2 usages found) 
>         TestDFSAdmin.java (1 usage found) 
>             28 import com.google.common.base.Supplier; 
>         TestDFSZKFailoverController.java (1 usage found) 
>             58 import com.google.common.base.Supplier; 
>     org.apache.hadoop.http (1 usage found) 
>         TestSSLHttpServerConfigs.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.ipc (1 usage found) 
>         TestIPC.java (1 usage found) 
>             101 import com.google.common.base.Supplier; 
>     org.apache.hadoop.mapred (2 usages found) 
>         TestTaskAttemptListenerImpl.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>         UtilsForTests.java (1 usage found) 
>             64 import com.google.common.base.Supplier; 
>     org.apache.hadoop.mapreduce.v2.app (4 usages found) 
>         TestFetchFailure.java (1 usage found) 
>             29 import com.google.common.base.Supplier; 
>         TestMRApp.java (1 usage found) 
>             31 import com.google.common.base.Supplier; 
>         TestRecovery.java (1 usage found) 
>             31 import com.google.common.base.Supplier; 
>         TestTaskHeartbeatHandler.java (1 usage found) 
>             28 import com.google.common.base.Supplier; 
>     org.apache.hadoop.mapreduce.v2.app.rm (1 usage found) 
>         TestRMContainerAllocator.java (1 usage found) 
>             156 import com.google.common.base.Supplier; 
>     org.apache.hadoop.mapreduce.v2.hs (1 usage found) 
>         TestJHSDelegationTokenSecretManager.java (1 usage found) 
>             30 import com.google.common.base.Supplier; 
>     org.apache.hadoop.metrics2.impl (1 usage found) 
>         TestMetricsSystemImpl.java (1 usage found) 
>             42 import com.google.common.base.Supplier; 
>     org.apache.hadoop.metrics2.lib (1 usage found) 
>         TestMutableRollingAverages.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.security (1 usage found) 
>         TestGroupsCaching.java (1 usage found) 
>             37 import com.google.common.base.Supplier; 
>     org.apache.hadoop.security.ssl (1 usage found) 
>         TestReloadingX509TrustManager.java (1 usage found) 
>             24 import com.google.common.base.Supplier; 
>     org.apache.hadoop.security.token.delegation (1 usage found) 
>         TestZKDelegationTokenSecretManager.java (1 usage found) 
>             27 import com.google.common.base.Supplier; 
>     org.apache.hadoop.test (2 usages found) 
>         GenericTestUtils.java (1 usage found) 
>             64 import com.google.common.base.Supplier; 
>         TestGenericTestUtils.java (1 usage found) 
>             26 import com.google.common.base.Supplier; 
>     org.apache.hadoop.tracing (1 usage found) 
>         SetSpanReceiver.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.util (1 usage found) 
>         TestShell.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.applications.distributedshell (1 usage found) 
>         TestDistributedShell.java (1 usage found) 
>             43 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.client (1 usage found) 
>         TestRMFailover.java (1 usage found) 
>             64 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.client.api.impl (1 usage found) 
>         TestYarnClientWithReservation.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.containermanager (1 usage 
> found) 
>         TestContainerManager.java (1 usage found) 
>             51 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher (1 
> usage found) 
>         TestContainerLaunch.java (1 usage found) 
>             57 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer (1 
> usage found) 
>         TestContainerLocalizer.java (1 usage found) 
>             97 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation 
> (1 usage found) 
>         TestLogAggregationService.java (1 usage found) 
>             150 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor (1 
> usage found) 
>         TestContainersMonitor.java (1 usage found) 
>             40 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.nodemanager.logaggregation.tracker (1 usage 
> found) 
>         TestNMLogAggregationStatusTracker.java (1 usage found) 
>             24 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.resourcemanager (6 usages found) 
>         TestApplicationMasterLauncher.java (1 usage found) 
>             95 import com.google.common.base.Supplier; 
>         TestLeaderElectorService.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestRM.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestRMHA.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>         TestRMRestart.java (1 usage found) 
>             137 import com.google.common.base.Supplier; 
>         TestWorkPreservingRMRestart.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.resourcemanager.recovery (1 usage found) 
>         TestZKRMStateStore.java (1 usage found) 
>             75 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity (1 usage 
> found) 
>         TestCapacityScheduler.java (1 usage found) 
>             192 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair (1 usage 
> found)
>         TestContinuousScheduling.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.resourcemanager.security (2 usages found) 
>         TestDelegationTokenRenewer.java (1 usage found) 
>             117 import com.google.common.base.Supplier; 
>         TestRMDelegationTokens.java (1 usage found) 
>             29 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.router.webapp (1 usage found) 
>         TestRouterWebServicesREST.java (1 usage found) 
>             135 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.server.webproxy.amfilter (1 usage found) 
>         TestAmFilter.java (1 usage found) 
>             53 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.service (1 usage found) 
>         MockServiceAM.java (1 usage found) 
>             21 import com.google.common.base.Supplier; 
>     org.apache.hadoop.yarn.sls.nodemanager (1 usage found) 
>         TestNMSimulator.java (1 usage found) 
>             20 import com.google.common.base.Supplier; 
> {code}



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