apache
/
hadoop
огледало од https://github.com/apache/hadoop.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233
							<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!--
 | Generated by Apache Maven Doxia at 2025-05-09
 | Rendered using Apache Maven Stylus Skin 1.5
-->
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>Apache Hadoop 3.5.0-SNAPSHOT &#x2013; Apache Hadoop Changelog</title>
    <style type="text/css" media="all">
      @import url("../../css/maven-base.css");
      @import url("../../css/maven-theme.css");
      @import url("../../css/site.css");
    </style>
    <link rel="stylesheet" href="../../css/print.css" type="text/css" media="print" />
        <meta name="Date-Revision-yyyymmdd" content="20250509" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
                </head>
  <body class="composite">
    <div id="banner">
                        <a href="http://hadoop.apache.org/" id="bannerLeft">
                                        <img src="http://hadoop.apache.org/images/hadoop-logo.jpg" alt="" />
                </a>
                              <a href="http://www.apache.org/" id="bannerRight">
                                        <img src="http://www.apache.org/images/asf_logo_wide.png" alt="" />
                </a>
            <div class="clear">
        <hr/>
      </div>
    </div>
    <div id="breadcrumbs">
            
                                     <div class="xright">            <a href="http://wiki.apache.org/hadoop" class="externalLink">Wiki</a>
            |
                <a href="https://gitbox.apache.org/repos/asf/hadoop.git" class="externalLink">git</a>
            |
                <a href="http://hadoop.apache.org/" class="externalLink">Apache Hadoop</a>
              
                                   &nbsp;| Last Published: 2025-05-09
              &nbsp;| Version: 3.5.0-SNAPSHOT
            </div>
      <div class="clear">
        <hr/>
      </div>
    </div>
    <div id="leftColumn">
      <div id="navcolumn">
             
                                                   <h5>General</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../index.html">Overview</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/SingleCluster.html">Single Node Setup</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/ClusterSetup.html">Cluster Setup</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/CommandsManual.html">Commands Reference</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/FileSystemShell.html">FileSystem Shell</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/Compatibility.html">Compatibility Specification</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/DownstreamDev.html">Downstream Developer's Guide</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/AdminCompatibilityGuide.html">Admin Compatibility Guide</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/InterfaceClassification.html">Interface Classification</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/filesystem/index.html">FileSystem Specification</a>
            </li>
          </ul>
                       <h5>Common</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/CLIMiniCluster.html">CLI Mini Cluster</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/FairCallQueue.html">Fair Call Queue</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/NativeLibraries.html">Native Libraries</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/Superusers.html">Proxy User</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/RackAwareness.html">Rack Awareness</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/SecureMode.html">Secure Mode</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/ServiceLevelAuth.html">Service Level Authorization</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/HttpAuthentication.html">HTTP Authentication</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/CredentialProviderAPI.html">Credential Provider API</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-kms/index.html">Hadoop KMS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/Tracing.html">Tracing</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/UnixShellGuide.html">Unix Shell Guide</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/registry/index.html">Registry</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/AsyncProfilerServlet.html">Async Profiler</a>
            </li>
          </ul>
                       <h5>HDFS</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsDesign.html">Architecture</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html">User Guide</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HDFSCommands.html">Commands Reference</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html">NameNode HA With QJM</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithNFS.html">NameNode HA With NFS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ObserverNameNode.html">Observer NameNode</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/Federation.html">Federation</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ViewFs.html">ViewFs</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ViewFsOverloadScheme.html">ViewFsOverloadScheme</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsSnapshots.html">Snapshots</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsEditsViewer.html">Edits Viewer</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsImageViewer.html">Image Viewer</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsPermissionsGuide.html">Permissions and HDFS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsQuotaAdminGuide.html">Quotas and HDFS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/LibHdfs.html">libhdfs (C API)</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/WebHDFS.html">WebHDFS (REST API)</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-hdfs-httpfs/index.html">HttpFS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ShortCircuitLocalReads.html">Short Circuit Local Reads</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/CentralizedCacheManagement.html">Centralized Cache Management</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsNfsGateway.html">NFS Gateway</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html">Rolling Upgrade</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ExtendedAttributes.html">Extended Attributes</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/TransparentEncryption.html">Transparent Encryption</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsMultihoming.html">Multihoming</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html">Storage Policies</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/MemoryStorage.html">Memory Storage Support</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/SLGUserGuide.html">Synthetic Load Generator</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HDFSErasureCoding.html">Erasure Coding</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HDFSDiskbalancer.html">Disk Balancer</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsUpgradeDomain.html">Upgrade Domain</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsDataNodeAdminGuide.html">DataNode Admin</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs-rbf/HDFSRouterFederation.html">Router Federation</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/HdfsProvidedStorage.html">Provided Storage</a>
            </li>
          </ul>
                       <h5>MapReduce</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html">Tutorial</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredCommands.html">Commands Reference</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduce_Compatibility_Hadoop1_Hadoop2.html">Compatibility with 1.x</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/EncryptedShuffle.html">Encrypted Shuffle</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/PluggableShuffleAndPluggableSort.html">Pluggable Shuffle/Sort</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/DistributedCacheDeploy.html">Distributed Cache Deploy</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/SharedCacheSupport.html">Support for YARN Shared Cache</a>
            </li>
          </ul>
                       <h5>MapReduce REST APIs</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapredAppMasterRest.html">MR Application Master</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-hs/HistoryServerRest.html">MR History Server</a>
            </li>
          </ul>
                       <h5>YARN</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/YARN.html">Architecture</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/YarnCommands.html">Commands Reference</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html">Capacity Scheduler</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/FairScheduler.html">Fair Scheduler</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRestart.html">ResourceManager Restart</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerHA.html">ResourceManager HA</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/ResourceModel.html">Resource Model</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/NodeLabel.html">Node Labels</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/NodeAttributes.html">Node Attributes</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/WebApplicationProxy.html">Web Application Proxy</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html">Timeline Server</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html">Timeline Service V.2</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html">Writing YARN Applications</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/YarnApplicationSecurity.html">YARN Application Security</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/NodeManager.html">NodeManager</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/DockerContainers.html">Running Applications in Docker Containers</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/RuncContainers.html">Running Applications in runC Containers</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/NodeManagerCgroups.html">Using CGroups</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/SecureContainer.html">Secure Containers</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/ReservationSystem.html">Reservation System</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html">Graceful Decommission</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/OpportunisticContainers.html">Opportunistic Containers</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/Federation.html">YARN Federation</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/SharedCache.html">Shared Cache</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/UsingGpus.html">Using GPU</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/UsingFPGA.html">Using FPGA</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/PlacementConstraints.html">Placement Constraints</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/YarnUI2.html">YARN UI2</a>
            </li>
          </ul>
                       <h5>YARN REST APIs</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/WebServicesIntro.html">Introduction</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html">Resource Manager</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/NodeManagerRest.html">Node Manager</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html#Timeline_Server_REST_API_v1">Timeline Server</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html#Timeline_Service_v.2_REST_API">Timeline Service V.2</a>
            </li>
          </ul>
                       <h5>YARN Service</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Overview.html">Overview</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/QuickStart.html">QuickStart</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Concepts.html">Concepts</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/YarnServiceAPI.html">Yarn Service API</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/ServiceDiscovery.html">Service Discovery</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-site/yarn-service/SystemServices.html">System Services</a>
            </li>
          </ul>
                       <h5>Hadoop Compatible File Systems</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-aliyun/tools/hadoop-aliyun/index.html">Aliyun OSS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-aws/tools/hadoop-aws/index.html">Amazon S3</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-azure/index.html">Azure Blob Storage</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-azure-datalake/index.html">Azure Data Lake Storage</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-cos/cloud-storage/index.html">Tencent COS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-huaweicloud/index.html">Huaweicloud OBS</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-tos/cloud-storage/index.html">VolcanoEngine TOS</a>
            </li>
          </ul>
                       <h5>Auth</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-auth/index.html">Overview</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-auth/Examples.html">Examples</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-auth/Configuration.html">Configuration</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-auth/BuildingIt.html">Building</a>
            </li>
          </ul>
                       <h5>Tools</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-streaming/HadoopStreaming.html">Hadoop Streaming</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-archives/HadoopArchives.html">Hadoop Archives</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-archive-logs/HadoopArchiveLogs.html">Hadoop Archive Logs</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-distcp/DistCp.html">DistCp</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-federation-balance/HDFSFederationBalance.html">HDFS Federation Balance</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-gridmix/GridMix.html">GridMix</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-rumen/Rumen.html">Rumen</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-resourceestimator/ResourceEstimator.html">Resource Estimator Service</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-sls/SchedulerLoadSimulator.html">Scheduler Load Simulator</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/Benchmarking.html">Hadoop Benchmarking</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-dynamometer/Dynamometer.html">Dynamometer</a>
            </li>
          </ul>
                       <h5>Reference</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/release/">Changelog and Release Notes</a>
            </li>
                  <li class="none">
                  <a href="../../../../api/index.html">Java API docs</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/UnixShellAPI.html">Unix Shell API</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/Metrics.html">Metrics</a>
            </li>
          </ul>
                       <h5>Configuration</h5>
                  <ul>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/core-default.xml">core-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs/hdfs-default.xml">hdfs-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-hdfs-rbf/hdfs-rbf-default.xml">hdfs-rbf-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml">mapred-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-yarn/hadoop-yarn-common/yarn-default.xml">yarn-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-kms/kms-default.html">kms-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-hdfs-httpfs/httpfs-default.html">httpfs-default.xml</a>
            </li>
                  <li class="none">
                  <a href="../../../../hadoop-project-dist/hadoop-common/DeprecatedProperties.html">Deprecated Properties</a>
            </li>
          </ul>
                                 <a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy">
          <img alt="Built by Maven" src="../../images/logos/maven-feather.png"/>
        </a>
                       
                               </div>
    </div>
    <div id="bodyColumn">
      <div id="contentBox">
        <!---
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
-->
<h1>Apache Hadoop Changelog</h1><section>
<h2><a name="Release_1.3.0_-_Unreleased_.28as_of_2018-09-02.29"></a>Release 1.3.0 - Unreleased (as of 2018-09-02)</h2><section>
<h3><a name="INCOMPATIBLE_CHANGES:"></a>INCOMPATIBLE CHANGES:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5777">MAPREDUCE-5777</a> </td>
<td align="left"> Support utf-8 text with BOM (byte order marker) </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> bc Wong </td>
<td align="left"> zhihai xu </td></tr>
</tbody>
</table></section><section>
<h3><a name="IMPROVEMENTS:"></a>IMPROVEMENTS:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2351">MAPREDUCE-2351</a> </td>
<td align="left"> mapred.job.tracker.history.completed.location should support an arbitrary filesystem URI </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Tom White </td>
<td align="left"> Tom White </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9450">HADOOP-9450</a> </td>
<td align="left"> HADOOP_USER_CLASSPATH_FIRST is not honored; CLASSPATH is PREpended instead of APpended </td>
<td align="left">  Major </td>
<td align="left"> scripts </td>
<td align="left"> Mitch Wyle </td>
<td align="left"> Harsh J </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4521">HDFS-4521</a> </td>
<td align="left"> invalid network topologies should not be cached </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8873">HADOOP-8873</a> </td>
<td align="left"> Port HADOOP-8175 (Add mkdir -p flag) to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4903">HDFS-4903</a> </td>
<td align="left"> Print trash configuration and trash emptier state in namenode log </td>
<td align="left">  Minor </td>
<td align="left"> namenode </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5406">MAPREDUCE-5406</a> </td>
<td align="left"> Improve logging around Task Tracker exiting with JVM manager inconsistent state </td>
<td align="left">  Major </td>
<td align="left"> tasktracker </td>
<td align="left"> Chelsey Chang </td>
<td align="left"> Chelsey Chang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5408">MAPREDUCE-5408</a> </td>
<td align="left"> CLONE - The logging level of the tasks should be configurable by the job </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5367">MAPREDUCE-5367</a> </td>
<td align="left"> Local jobs all use same local working directory </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4963">HDFS-4963</a> </td>
<td align="left"> Improve multihoming support in namenode </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Arpit Agarwal </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9855">HADOOP-9855</a> </td>
<td align="left"> Backport HADOOP-6578 to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> James Kinley </td>
<td align="left"> James Kinley </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5038">HDFS-5038</a> </td>
<td align="left"> Backport several branch-2 APIs to branch-1 </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Jing Zhao </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5367">HDFS-5367</a> </td>
<td align="left"> Restoring namenode storage locks namenode due to unnecessary fsimage write </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> yunjiong zhao </td>
<td align="left"> yunjiong zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5457">MAPREDUCE-5457</a> </td>
<td align="left"> Add a KeyOnlyTextOutputReader to enable streaming to write out text files without separators </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5609">MAPREDUCE-5609</a> </td>
<td align="left"> Add debug log message when sending job end notification </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Robert Kanter </td>
<td align="left"> Robert Kanter </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3310">MAPREDUCE-3310</a> </td>
<td align="left"> Custom grouping comparator cannot be set for Combiners </td>
<td align="left">  Major </td>
<td align="left"> client </td>
<td align="left"> Mathias Herberts </td>
<td align="left"> Alejandro Abdelnur </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5651">MAPREDUCE-5651</a> </td>
<td align="left"> Backport Fair Scheduler queue placement policies to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> scheduler </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Ted Malaska </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5712">MAPREDUCE-5712</a> </td>
<td align="left"> Backport Fair Scheduler pool placement by secondary group </td>
<td align="left">  Major </td>
<td align="left"> scheduler </td>
<td align="left"> Theodore michael Malaska </td>
<td align="left"> Theodore michael Malaska </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10614">HADOOP-10614</a> </td>
<td align="left"> CBZip2InputStream is not threadsafe </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Xiangrui Meng </td>
<td align="left"> Xiangrui Meng </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6088">MAPREDUCE-6088</a> </td>
<td align="left"> TestTokenCache tests should use their own JobConf instances </td>
<td align="left">  Major </td>
<td align="left"> mrv1, test </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7312">HDFS-7312</a> </td>
<td align="left"> Update DistCp v1 to optionally not use tmp location (branch-1 only) </td>
<td align="left">  Minor </td>
<td align="left"> tools </td>
<td align="left"> Joseph Prosser </td>
<td align="left"> Joseph Prosser </td></tr>
</tbody>
</table></section><section>
<h3><a name="BUG_FIXES:"></a>BUG FIXES:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7140">HADOOP-7140</a> </td>
<td align="left"> IPC Reader threads do not stop when server stops </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2264">HDFS-2264</a> </td>
<td align="left"> NamenodeProtocol has the wrong value for clientPrincipal in KerberosInfo annotation </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5046">MAPREDUCE-5046</a> </td>
<td align="left"> backport MAPREDUCE-1423 to mapred.lib.CombineFileInputFormat </td>
<td align="left">  Major </td>
<td align="left"> client </td>
<td align="left"> Sangjin Lee </td>
<td align="left">  </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5047">MAPREDUCE-5047</a> </td>
<td align="left"> keep.failed.task.files=true causes job failure on secure clusters </td>
<td align="left">  Major </td>
<td align="left"> task, tasktracker </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5070">MAPREDUCE-5070</a> </td>
<td align="left"> TestClusterStatus.testClusterMetrics fails on JDK7 </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5072">MAPREDUCE-5072</a> </td>
<td align="left"> TestDelegationTokenRenewal.testDTRenewal fails in MR1 on jdk7 </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5073">MAPREDUCE-5073</a> </td>
<td align="left"> TestJobStatusPersistency.testPersistency fails on JDK7 </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4622">HDFS-4622</a> </td>
<td align="left"> Remove redundant synchronized from FSNamesystem#rollEditLog in branch-1 </td>
<td align="left">  Trivial </td>
<td align="left"> . </td>
<td align="left"> Jing Zhao </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2817">MAPREDUCE-2817</a> </td>
<td align="left"> MiniRMCluster hardcodes &#x2018;mapred.local.dir&#x2019; configuration to &#x2018;build/test/mapred/local&#x2019; </td>
<td align="left">  Minor </td>
<td align="left"> test </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Robert Kanter </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5133">MAPREDUCE-5133</a> </td>
<td align="left"> TestSubmitJob.testSecureJobExecution is flaky due to job dir deletion race </td>
<td align="left">  Major </td>
<td align="left"> test </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5218">MAPREDUCE-5218</a> </td>
<td align="left"> Annotate (comment) internal classes as Private </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5217">MAPREDUCE-5217</a> </td>
<td align="left"> DistCp fails when launched by Oozie in a secure cluster </td>
<td align="left">  Major </td>
<td align="left"> distcp, security </td>
<td align="left"> Venkat Ranganathan </td>
<td align="left"> Venkat Ranganathan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5095">MAPREDUCE-5095</a> </td>
<td align="left"> TestShuffleExceptionCount#testCheckException fails occasionally with JDK7 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Arpit Agarwal </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5250">MAPREDUCE-5250</a> </td>
<td align="left"> Searching for &#x2018;;&#x2019; in JobTracker History throws ArrayOutOfBoundException </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4944">HDFS-4944</a> </td>
<td align="left"> WebHDFS cannot create a file path containing characters that must be URI-encoded, such as space. </td>
<td align="left">  Major </td>
<td align="left"> webhdfs </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9678">HADOOP-9678</a> </td>
<td align="left"> TestRPC#testStopsAllThreads intermittently fails on Windows </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Ivan Mitic </td>
<td align="left"> Ivan Mitic </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9307">HADOOP-9307</a> </td>
<td align="left"> BufferedFSInputStream.read returns wrong results after certain seeks </td>
<td align="left">  Major </td>
<td align="left"> fs </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5003">HDFS-5003</a> </td>
<td align="left"> TestNNThroughputBenchmark failed caused by existing directories </td>
<td align="left">  Minor </td>
<td align="left"> test </td>
<td align="left"> Xi Fang </td>
<td align="left"> Xi Fang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5405">MAPREDUCE-5405</a> </td>
<td align="left"> Job recovery can fail if task log directory symlink from prior run still exists </td>
<td align="left">  Major </td>
<td align="left"> mrv1 </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5288">MAPREDUCE-5288</a> </td>
<td align="left"> ResourceEstimator#getEstimatedTotalMapOutputSize suffers from divide by zero issues </td>
<td align="left">  Major </td>
<td align="left"> mrv1 </td>
<td align="left"> Harsh J </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9507">HADOOP-9507</a> </td>
<td align="left"> LocalFileSystem rename() is broken in some cases when destination exists </td>
<td align="left">  Minor </td>
<td align="left"> fs </td>
<td align="left"> Mostafa Elhemali </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4366">MAPREDUCE-4366</a> </td>
<td align="left"> mapred metrics shows negative count of waiting maps and reduces </td>
<td align="left">  Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Thomas Graves </td>
<td align="left"> Sandy Ryza </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9768">HADOOP-9768</a> </td>
<td align="left"> chown and chgrp reject users and groups with spaces on platforms where spaces are otherwise acceptable </td>
<td align="left">  Major </td>
<td align="left"> fs </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9801">HADOOP-9801</a> </td>
<td align="left"> Configuration#writeXml uses platform defaulting encoding, which may mishandle multi-byte characters. </td>
<td align="left">  Major </td>
<td align="left"> conf </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4898">HDFS-4898</a> </td>
<td align="left"> BlockPlacementPolicyWithNodeGroup.chooseRemoteRack() fails to properly fallback to local rack </td>
<td align="left">  Minor </td>
<td align="left"> namenode </td>
<td align="left"> Eric Sirianni </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5211">HDFS-5211</a> </td>
<td align="left"> Race condition between DistributedFileSystem#close and FileSystem#close can cause return of a closed DistributedFileSystem instance from the FileSystem cache. </td>
<td align="left">  Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5508">MAPREDUCE-5508</a> </td>
<td align="left"> JobTracker memory leak caused by unreleased FileSystem objects in JobInProgress#cleanupJob </td>
<td align="left">  Critical </td>
<td align="left"> jobtracker </td>
<td align="left"> Xi Fang </td>
<td align="left"> Xi Fang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5245">HDFS-5245</a> </td>
<td align="left"> shouldRetry() in WebHDFSFileSystem generates excessive warnings </td>
<td align="left">  Minor </td>
<td align="left"> webhdfs </td>
<td align="left"> Haohui Mai </td>
<td align="left"> Haohui Mai </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10009">HADOOP-10009</a> </td>
<td align="left"> Backport HADOOP-7808 to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Haohui Mai </td>
<td align="left"> Haohui Mai </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5569">MAPREDUCE-5569</a> </td>
<td align="left"> FloatSplitter is not generating correct splits </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Nathan Roberts </td>
<td align="left"> Nathan Roberts </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5512">MAPREDUCE-5512</a> </td>
<td align="left"> TaskTracker hung after failed reconnect to the JobTracker </td>
<td align="left">  Major </td>
<td align="left"> tasktracker </td>
<td align="left"> Ivan Mitic </td>
<td align="left"> Ivan Mitic </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4794">HDFS-4794</a> </td>
<td align="left"> Browsing filesystem via webui throws kerberos exception when NN service RPC is enabled in a secure cluster </td>
<td align="left">  Major </td>
<td align="left"> security </td>
<td align="left"> Benoy Antony </td>
<td align="left"> Benoy Antony </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10142">HADOOP-10142</a> </td>
<td align="left"> Avoid groups lookup for unprivileged users such as &#x201c;dr.who&#x201d; </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Vinayakumar B </td>
<td align="left"> Vinayakumar B </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10090">HADOOP-10090</a> </td>
<td align="left"> Jobtracker metrics not updated properly after execution of a mapreduce job </td>
<td align="left">  Major </td>
<td align="left"> metrics </td>
<td align="left"> Ivan Mitic </td>
<td align="left"> Ivan Mitic </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5702">MAPREDUCE-5702</a> </td>
<td align="left"> TaskLogServlet#printTaskLog has spurious HTML closing tags </td>
<td align="left">  Trivial </td>
<td align="left"> task </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Robert Kanter </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5698">MAPREDUCE-5698</a> </td>
<td align="left"> Backport MAPREDUCE-1285 to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Yongjun Zhang </td>
<td align="left"> Yongjun Zhang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5685">HDFS-5685</a> </td>
<td align="left"> DistCp will fail to copy with -delete switch </td>
<td align="left">  Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Yongjun Zhang </td>
<td align="left"> Yongjun Zhang </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5710">MAPREDUCE-5710</a> </td>
<td align="left"> Backport MAPREDUCE-1305 to branch-1 </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Yongjun Zhang </td>
<td align="left"> Yongjun Zhang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5944">HDFS-5944</a> </td>
<td align="left"> LeaseManager:findLeaseWithPrefixPath can&#x2019;t handle path like /a/b/ right and cause SecondaryNameNode failed do checkpoint </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> yunjiong zhao </td>
<td align="left"> yunjiong zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-5516">HDFS-5516</a> </td>
<td align="left"> WebHDFS does not require user name when anonymous http requests are disallowed. </td>
<td align="left">  Major </td>
<td align="left"> webhdfs </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Miodrag Radulovic </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5808">MAPREDUCE-5808</a> </td>
<td align="left"> Port output replication factor configurable for terasort to Hadoop 1.x </td>
<td align="left">  Minor </td>
<td align="left"> examples </td>
<td align="left"> Chuan Liu </td>
<td align="left"> Chuan Liu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5822">MAPREDUCE-5822</a> </td>
<td align="left"> FairScheduler does not preempt due to fairshare-starvation when fairshare is 1 </td>
<td align="left">  Major </td>
<td align="left"> scheduler </td>
<td align="left"> Anubhav Dhoot </td>
<td align="left"> Anubhav Dhoot </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-6141">HDFS-6141</a> </td>
<td align="left"> WebHdfsFileSystem#toUrl does not perform character escaping. </td>
<td align="left">  Major </td>
<td align="left"> webhdfs </td>
<td align="left"> Chris Nauroth </td>
<td align="left"> Chris Nauroth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10562">HADOOP-10562</a> </td>
<td align="left"> Namenode exits on exception without printing stack trace in AbstractDelegationTokenSecretManager </td>
<td align="left">  Critical </td>
<td align="left"> . </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Suresh Srinivas </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5877">MAPREDUCE-5877</a> </td>
<td align="left"> Inconsistency between JT/TT for tasks taking a long time to launch </td>
<td align="left">  Critical </td>
<td align="left"> jobtracker, tasktracker </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5979">MAPREDUCE-5979</a> </td>
<td align="left"> FairScheduler: zero weight can cause sort failures </td>
<td align="left">  Major </td>
<td align="left"> scheduler </td>
<td align="left"> Anubhav Dhoot </td>
<td align="left"> Anubhav Dhoot </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5966">MAPREDUCE-5966</a> </td>
<td align="left"> MR1 FairScheduler use of custom weight adjuster is not thread safe for comparisons </td>
<td align="left">  Major </td>
<td align="left"> scheduler </td>
<td align="left"> Anubhav Dhoot </td>
<td align="left"> Anubhav Dhoot </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5968">MAPREDUCE-5968</a> </td>
<td align="left"> Work directory is not deleted when downloadCacheObject throws IOException </td>
<td align="left">  Major </td>
<td align="left"> mrv1 </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-6822">HDFS-6822</a> </td>
<td align="left"> In branch-1, Namenode and datanode fails to replace &#x201c;_HOST&#x201d; to hostname for hadoop.http.authentication.kerberos.principal </td>
<td align="left">  Major </td>
<td align="left"> security </td>
<td align="left"> Jing Zhao </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6012">MAPREDUCE-6012</a> </td>
<td align="left"> DBInputSplit creates invalid ranges on Oracle </td>
<td align="left">  Major </td>
<td align="left"> . </td>
<td align="left"> Julien Serdaru </td>
<td align="left"> Wei Yan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-11035">HADOOP-11035</a> </td>
<td align="left"> distcp on mr1(branch-1) fails with NPE using a short relative source path. </td>
<td align="left">  Major </td>
<td align="left"> tools </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6009">MAPREDUCE-6009</a> </td>
<td align="left"> Map-only job with new-api runs wrong OutputCommitter when cleanup scheduled in a reduce slot </td>
<td align="left">  Blocker </td>
<td align="left"> client, job submission </td>
<td align="left"> Gera Shegalov </td>
<td align="left"> Gera Shegalov </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6147">MAPREDUCE-6147</a> </td>
<td align="left"> Support mapreduce.input.fileinputformat.split.maxsize </td>
<td align="left">  Minor </td>
<td align="left"> mrv1 </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6170">MAPREDUCE-6170</a> </td>
<td align="left"> TestUlimit failure on JDK8 </td>
<td align="left">  Major </td>
<td align="left"> contrib/streaming </td>
<td align="left"> bc Wong </td>
<td align="left"> bc Wong </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7503">HDFS-7503</a> </td>
<td align="left"> Namenode restart after large deletions can cause slow processReport (due to logging) </td>
<td align="left">  Major </td>
<td align="left"> namenode </td>
<td align="left"> Arpit Agarwal </td>
<td align="left"> Arpit Agarwal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6196">MAPREDUCE-6196</a> </td>
<td align="left"> Fix BigDecimal ArithmeticException in PiEstimator </td>
<td align="left">  Minor </td>
<td align="left"> . </td>
<td align="left"> Ray Chiang </td>
<td align="left"> Ray Chiang </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6198">MAPREDUCE-6198</a> </td>
<td align="left"> NPE from JobTracker#resolveAndAddToTopology in MR1 cause initJob and heartbeat failure. </td>
<td align="left">  Major </td>
<td align="left"> mrv1 </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5272">MAPREDUCE-5272</a> </td>
<td align="left"> A Minor Error in Javadoc of TestMRWithDistributedCache in Branch-1 </td>
<td align="left">  Trivial </td>
<td align="left"> test </td>
<td align="left"> Zhijie Shen </td>
<td align="left"> Zhijie Shen </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5556">MAPREDUCE-5556</a> </td>
<td align="left"> mapred docs have incorrect classpath </td>
<td align="left">  Trivial </td>
<td align="left"> . </td>
<td align="left"> Allen Wittenauer </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5660">MAPREDUCE-5660</a> </td>
<td align="left"> Log info about possible thrashing (when using memory-based scheduling in Capacity Scheduler) is not printed </td>
<td align="left">  Trivial </td>
<td align="left"> capacity-sched, mrv1, tasktracker </td>
<td align="left"> Adam Kawa </td>
<td align="left"> Adam Kawa </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5183">MAPREDUCE-5183</a> </td>
<td align="left"> In, TaskTracker#reportProgress logging of 0.0-1.0 progress is followed by percent sign </td>
<td align="left">  Minor </td>
<td align="left"> mrv1, tasktracker </td>
<td align="left"> Sandy Ryza </td>
<td align="left"> Niranjan Singh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-6649">HDFS-6649</a> </td>
<td align="left"> Documentation for setrep is wrong </td>
<td align="left">  Trivial </td>
<td align="left"> documentation </td>
<td align="left"> Alexander Fahlke </td>
<td align="left"> Akira Ajisaka </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6076">MAPREDUCE-6076</a> </td>
<td align="left"> Zero map split input length combine with none zero  map split input length may cause MR1 job hung sometimes. </td>
<td align="left">  Major </td>
<td align="left"> mrv1 </td>
<td align="left"> zhihai xu </td>
<td align="left"> zhihai xu </td></tr>
</tbody>
</table></section><section>
<h3><a name="TESTS:"></a>TESTS:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9624">HADOOP-9624</a> </td>
<td align="left"> TestFSMainOperationsLocalFileSystem failed when the Hadoop test root path has &#x201c;X&#x201d; in its name </td>
<td align="left">  Minor </td>
<td align="left"> test </td>
<td align="left"> Xi Fang </td>
<td align="left"> Xi Fang </td></tr>
</tbody>
</table></section><section>
<h3><a name="SUB-TASKS:"></a>SUB-TASKS:</h3>
<table border="0" class="bodyTable">
<thead>

<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>

<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4049">MAPREDUCE-4049</a> </td>
<td align="left"> plugin for generic shuffle service </td>
<td align="left">  Major </td>
<td align="left"> performance, task, tasktracker </td>
<td align="left"> Avner BenHanoch </td>
<td align="left"> Avner BenHanoch </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-9573">HADOOP-9573</a> </td>
<td align="left"> Fix test-patch script to work with the enhanced PreCommit-Admin script. </td>
<td align="left">  Major </td>
<td align="left"> build </td>
<td align="left"> Giridharan Kesavan </td>
<td align="left"> Giridharan Kesavan </td></tr>
</tbody>
</table></section></section>
      </div>
    </div>
    <div class="clear">
      <hr/>
    </div>
    <div id="footer">
      <div class="xright">
        &#169;            2008-2025
              Apache Software Foundation
            
                          - <a href="http://maven.apache.org/privacy-policy.html">Privacy Policy</a>.
        Apache Maven, Maven, Apache, the Apache feather logo, and the Apache Maven project logos are trademarks of The Apache Software Foundation.
      </div>
      <div class="clear">
        <hr/>
      </div>
    </div>
  </body>
</html>