583 lines
28 KiB
HTML
583 lines
28 KiB
HTML
<!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 2023-06-03
|
|
| Rendered using Apache Maven Stylus Skin 1.5
|
|
-->
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head>
|
|
<title>HttpFS – Hadoop HDFS over HTTP - Documentation Sets</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="20230603" />
|
|
<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>
|
|
|
|
| Last Published: 2023-06-03
|
|
| Version: 3.4.0-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/cloud-storage/index.html">Huaweicloud OBS</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 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. See accompanying LICENSE file.
|
|
-->
|
|
<h1>Hadoop HDFS over HTTP - Documentation Sets</h1>
|
|
<p>HttpFS is a server that provides a REST HTTP gateway supporting all HDFS File System operations (read and write). And it is interoperable with the <b>webhdfs</b> REST HTTP API.</p>
|
|
<p>HttpFS can be used to transfer data between clusters running different versions of Hadoop (overcoming RPC versioning issues), for example using Hadoop DistCP.</p>
|
|
<p>HttpFS can be used to access data in HDFS on a cluster behind of a firewall (the HttpFS server acts as a gateway and is the only system that is allowed to cross the firewall into the cluster).</p>
|
|
<p>HttpFS can be used to access data in HDFS using HTTP utilities (such as curl and wget) and HTTP libraries Perl from other languages than Java.</p>
|
|
<p>The <b>webhdfs</b> client FileSystem implementation can be used to access HttpFS using the Hadoop filesystem command (<code>hadoop fs</code>) line tool as well as from Java applications using the Hadoop FileSystem Java API.</p>
|
|
<p>HttpFS has built-in security supporting Hadoop pseudo authentication and HTTP SPNEGO Kerberos and other pluggable authentication mechanisms. It also provides Hadoop proxy user support.</p><section>
|
|
<h2><a name="How_Does_HttpFS_Works.3F"></a>How Does HttpFS Works?</h2>
|
|
<p>HttpFS is a separate service from Hadoop NameNode.</p>
|
|
<p>HttpFS itself is Java Jetty web-application.</p>
|
|
<p>HttpFS HTTP web-service API calls are HTTP REST calls that map to a HDFS file system operation. For example, using the <code>curl</code> Unix command:</p>
|
|
<ul>
|
|
|
|
<li>
|
|
|
|
<p><code>$ curl 'http://httpfs-host:14000/webhdfs/v1/user/foo/README.txt?op=OPEN&user.name=foo'</code> returns the contents of the HDFS <code>/user/foo/README.txt</code> file.</p>
|
|
</li>
|
|
<li>
|
|
|
|
<p><code>$ curl 'http://httpfs-host:14000/webhdfs/v1/user/foo?op=LISTSTATUS&user.name=foo'</code> returns the contents of the HDFS <code>/user/foo</code> directory in JSON format.</p>
|
|
</li>
|
|
<li>
|
|
|
|
<p><code>$ curl 'http://httpfs-host:14000/webhdfs/v1/user/foo?op=GETTRASHROOT&user.name=foo'</code> returns the path <code>/user/foo/.Trash</code>, if <code>/</code> is an encrypted zone, returns the path <code>/.Trash/foo</code>. See <a href="../hadoop-project-dist/hadoop-hdfs/TransparentEncryption.html#Rename_and_Trash_considerations">more details</a> about trash path in an encrypted zone.</p>
|
|
</li>
|
|
<li>
|
|
|
|
<p><code>$ curl -X PUT 'http://httpfs-host:14000/webhdfs/v1/user/foo/bar?op=MKDIRS&user.name=foo'</code> creates the HDFS <code>/user/foo/bar</code> directory.</p>
|
|
</li>
|
|
</ul></section><section>
|
|
<h2><a name="User_and_Developer_Documentation"></a>User and Developer Documentation</h2>
|
|
<ul>
|
|
|
|
<li>
|
|
|
|
<p><a href="./ServerSetup.html">HttpFS Server Setup</a></p>
|
|
</li>
|
|
<li>
|
|
|
|
<p><a href="./UsingHttpTools.html">Using HTTP Tools</a></p>
|
|
</li>
|
|
</ul></section>
|
|
</div>
|
|
</div>
|
|
<div class="clear">
|
|
<hr/>
|
|
</div>
|
|
<div id="footer">
|
|
<div class="xright">
|
|
© 2008-2023
|
|
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>
|