{"id":1210,"date":"2019-07-31T22:35:59","date_gmt":"2019-07-31T20:35:59","guid":{"rendered":"https:\/\/myoceane.fr\/?p=1210"},"modified":"2020-05-08T07:27:44","modified_gmt":"2020-05-08T05:27:44","slug":"hdfs-%e5%ae%89%e8%a3%9d-hdfs","status":"publish","type":"post","link":"https:\/\/myoceane.fr\/index.php\/hdfs-%e5%ae%89%e8%a3%9d-hdfs\/","title":{"rendered":"[HDFS] \u5b89\u88dd HDFS (Hadoop-3.1.2)"},"content":{"rendered":"<div id=\"fb-root\"><\/div>\n\n<p style=\"text-align: justify;\">\u95dc\u65bc\u5b89\u88dd Hdfs \u7684\u89e3\u8aaa\u6587\uff0c\u7db2\u8def\u4e0a\u6709\u8a31\u591a\u8cc7\u6e90\uff0c\u5982\u679c\u662f Hadoop-2.8.2 \u7684\u5b89\u88dd\u89e3\u8aaa\uff0c\u840c\u7238\u89ba\u5f97\u75de\u5ba2\u90a6\u7684\u9435\u4eba\u8cfd <a href=\"https:\/\/ithelp.ithome.com.tw\/users\/20107349\/ironman\/1309\">Hadoop ecosystem \u5de5\u5177\u7c21\u4ecb, \u5b89\u88dd\u6559\u5b78\u8207\u5404\u7a2e\u60c5\u5883\u4f7f\u7528<\/a> \u8b1b\u89e3\u7684\u5f88\u8a73\u7d30\uff0c\u672c\u7bc7\u60f3\u8981\u5448\u73fe\u5728\u5b89\u88dd\u65b0\u7684 Hadoop-3.1.2 \u7684\u6642\u5019\u6703\u6709\u4ec0\u9ebc\u6a23\u7684\u554f\u984c\u3002\u672c\u7bc7\u4e3b\u8981\u53c3\u8003 hadoop-3.1.2 Single Node Cluster \u8a2d\u5b9a\u7684\u9023\u7d50\u00a0<a href=\"https:\/\/hadoop.apache.org\/docs\/r3.1.2\/hadoop-project-dist\/hadoop-common\/SingleCluster.html\">Link<\/a>\u00a0\u3002<\/p>\n<p>\u5b89\u88dd\u74b0\u5883\u8207\u5b89\u88dd\u7248\u672c\uff1a<\/p>\n<ul>\n<li>Java version &#8220;12.0.1&#8221;<\/li>\n<li>Hadoop-3.1.2<\/li>\n<\/ul>\n\n\n\n<h5>core-site.xml (&#8230;\/etc\/hadoop\/core-site.xml)<\/h5>\n<pre class=\"lang:markup\">&lt;configuration&gt;\n    &lt;property&gt;\n        &lt;name&gt;fs.defaultFS&lt;\/name&gt;\n        &lt;value&gt;hdfs:\/\/localhost:9000&lt;\/value&gt;\n    &lt;\/property&gt;\n&lt;\/configuration&gt;<\/pre>\n<h5><strong>hdfs-site.xml<\/strong> (&#8230;\/etc\/hadoop\/hdfs-site.xml)<\/h5>\n<pre class=\"lang:markup\">&lt;configuration&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.replication&lt;\/name&gt;\n        &lt;value&gt;1&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.namenode.name.dir&lt;\/name&gt;\n    \t&lt;value&gt;\/opt\/hadoop-3.1.2\/data\/namenode&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.datanode.data.dir&lt;\/name&gt;\n        &lt;value&gt;\/opt\/hadoop-3.1.2\/data\/datanode&lt;\/value&gt;\n    &lt;\/property&gt;\n&lt;\/configuration&gt;<\/pre>\n\n\n\n<h5>\u514d\u5bc6\u78bc\u8a2d\u5b9a<\/h5>\n<pre class=\"lang:bash\">sudo ssh-keygen -t rsa -P '' -f ~\/.ssh\/id_rsa\nsudo cat ~\/.ssh\/id_rsa.pub &gt;&gt; ~\/.ssh\/authorized_keys\nsudo chmod 0600 ~\/.ssh\/authorized_keys<\/pre>\n<h5>\u683c\u5f0f\u5316 NameNode<\/h5>\n<pre class=\"lang:bash\">hdfs namenode -format<\/pre>\n<p>\u57f7\u884c\u4ee5\u4e0a\u7684\u683c\u5f0f\u5316\u6307\u4ee4\u6703\u5f97\u5230<\/p>\n<pre class=\"lang:bash\">STARTUP_MSG:   build = https:\/\/github.com\/apache\/hadoop.git -r 1019dde65bcf12e05ef48ac71e84550d589e5d9a; compiled by 'sunilg' on 2019-01-29T01:39Z\nSTARTUP_MSG:   java = 12.0.1\n************************************************************\/\n2019-07-28 21:31:55,002 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]\n2019-07-28 21:31:55,159 INFO namenode.NameNode: createNameNode [-format]\n2019-07-28 21:31:55,359 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable\n2019-07-28 21:31:55,829 INFO common.Util: Assuming 'file' scheme for path \/opt\/hadoop-3.1.2\/data\/namenode in configuration.\n2019-07-28 21:31:55,830 INFO common.Util: Assuming 'file' scheme for path \/opt\/hadoop-3.1.2\/data\/namenode in configuration.\nFormatting using clusterid: CID-c830415e-428c-4edf-9340-cc672800357e\n2019-07-28 21:31:55,880 INFO namenode.FSEditLog: Edit logging is async:true\n2019-07-28 21:31:55,909 INFO namenode.FSNamesystem: KeyProvider: null\n2019-07-28 21:31:55,910 INFO namenode.FSNamesystem: fsLock is fair: true\n2019-07-28 21:31:55,911 INFO namenode.FSNamesystem: Detailed lock hold time metrics enabled: false\n2019-07-28 21:31:55,984 INFO namenode.FSNamesystem: fsOwner             = root (auth:SIMPLE)\n2019-07-28 21:31:55,984 INFO namenode.FSNamesystem: supergroup          = supergroup\n2019-07-28 21:31:55,984 INFO namenode.FSNamesystem: isPermissionEnabled = true\n2019-07-28 21:31:55,984 INFO namenode.FSNamesystem: HA Enabled: false\n2019-07-28 21:31:56,050 INFO common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling\n2019-07-28 21:31:56,075 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit: configured=1000, counted=60, effected=1000\n2019-07-28 21:31:56,075 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true\n2019-07-28 21:31:56,083 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000\n2019-07-28 21:31:56,083 INFO blockmanagement.BlockManager: The block deletion will start around 2019 7\u6708 28 21:31:56\n2019-07-28 21:31:56,087 INFO util.GSet: Computing capacity for map BlocksMap\n2019-07-28 21:31:56,087 INFO util.GSet: VM type       = 64-bit\n2019-07-28 21:31:56,090 INFO util.GSet: 2.0% max memory 2 GB = 41.0 MB\n2019-07-28 21:31:56,090 INFO util.GSet: capacity      = 2^22 = 4194304 entries\n2019-07-28 21:31:56,126 INFO blockmanagement.BlockManager: dfs.block.access.token.enable = false\n2019-07-28 21:31:56,136 INFO Configuration.deprecation: No unit for dfs.namenode.safemode.extension(30000) assuming MILLISECONDS\n2019-07-28 21:31:56,136 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.threshold-pct = 0.9990000128746033\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.min.datanodes = 0\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.extension = 30000\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManager: defaultReplication         = 1\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManager: maxReplication             = 512\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManager: minReplication             = 1\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManager: maxReplicationStreams      = 2\n2019-07-28 21:31:56,137 INFO blockmanagement.BlockManager: redundancyRecheckInterval  = 3000ms\n2019-07-28 21:31:56,138 INFO blockmanagement.BlockManager: encryptDataTransfer        = false\n2019-07-28 21:31:56,138 INFO blockmanagement.BlockManager: maxNumBlocksToLog          = 1000\n2019-07-28 21:31:56,178 INFO namenode.FSDirectory: GLOBAL serial map: bits=24 maxEntries=16777215\n2019-07-28 21:31:56,203 INFO util.GSet: Computing capacity for map INodeMap\n2019-07-28 21:31:56,204 INFO util.GSet: VM type       = 64-bit\n2019-07-28 21:31:56,204 INFO util.GSet: 1.0% max memory 2 GB = 20.5 MB\n2019-07-28 21:31:56,204 INFO util.GSet: capacity      = 2^21 = 2097152 entries\n2019-07-28 21:31:56,212 INFO namenode.FSDirectory: ACLs enabled? false\n2019-07-28 21:31:56,212 INFO namenode.FSDirectory: POSIX ACL inheritance enabled? true\n2019-07-28 21:31:56,212 INFO namenode.FSDirectory: XAttrs enabled? true\n2019-07-28 21:31:56,213 INFO namenode.NameNode: Caching file names occurring more than 10 times\n2019-07-28 21:31:56,225 INFO snapshot.SnapshotManager: Loaded config captureOpenFiles: false, skipCaptureAccessTimeOnlyChange: false, snapshotDiffAllowSnapRootDescendant: true, maxSnapshotLimit: 65536\n2019-07-28 21:31:56,230 INFO snapshot.SnapshotManager: SkipList is disabled\n2019-07-28 21:31:56,236 INFO util.GSet: Computing capacity for map cachedBlocks\n2019-07-28 21:31:56,236 INFO util.GSet: VM type       = 64-bit\n2019-07-28 21:31:56,237 INFO util.GSet: 0.25% max memory 2 GB = 5.1 MB\n2019-07-28 21:31:56,237 INFO util.GSet: capacity      = 2^19 = 524288 entries\n2019-07-28 21:31:56,259 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10\n2019-07-28 21:31:56,259 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10\n2019-07-28 21:31:56,259 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25\n2019-07-28 21:31:56,264 INFO namenode.FSNamesystem: Retry cache on namenode is enabled\n2019-07-28 21:31:56,264 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis\n2019-07-28 21:31:56,268 INFO util.GSet: Computing capacity for map NameNodeRetryCache\n2019-07-28 21:31:56,268 INFO util.GSet: VM type       = 64-bit\n2019-07-28 21:31:56,268 INFO util.GSet: 0.029999999329447746% max memory 2 GB = 629.1 KB\n2019-07-28 21:31:56,268 INFO util.GSet: capacity      = 2^16 = 65536 entries\n2019-07-28 21:31:56,312 INFO namenode.FSImage: Allocated new BlockPoolId: BP-952615036-192.168.1.35-1564342316302\n2019-07-28 21:31:56,356 INFO common.Storage: Storage directory \/opt\/hadoop-3.1.2\/data\/namenode has been successfully formatted.\n2019-07-28 21:31:56,383 INFO namenode.FSImageFormatProtobuf: Saving image file \/opt\/hadoop-3.1.2\/data\/namenode\/current\/fsimage.ckpt_0000000000000000000 using no compression\n2019-07-28 21:31:56,512 INFO namenode.FSImageFormatProtobuf: Image file \/opt\/hadoop-3.1.2\/data\/namenode\/current\/fsimage.ckpt_0000000000000000000 of size 391 bytes saved in 0 seconds .\n2019-07-28 21:31:56,544 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid &gt;= 0\n2019-07-28 21:31:56,553 INFO namenode.NameNode: SHUTDOWN_MSG: \n\/************************************************************\nSHUTDOWN_MSG: Shutting down NameNode at LindeMBP\/192.168.1.35\n************************************************************\/<\/pre>\n<p>\u6309\u7167\u539f\u672c\u7684\u6559\u5b78\u5230\u9019\u4e00\u6b65\u7684\u6642\u5019\uff0c\u53ea\u8981\u555f\u52d5 ..\/sbin\/start-dfs.sh \u5c31\u80fd\u5920\u6210\u529f\u555f\u52d5 Hdfs Namenode \u8207 Datanode\uff0c\u4f46\u662f\u6b64\u6642\u51fa\u73fe\u4ee5\u4e0b\u7684\u932f\u8aa4\u8a0a\u606f\uff01<\/p>\n<pre class=\"lang:bash\">Starting namenodes on [localhost]\nERROR: Attempting to operate on hdfs namenode as root\nERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.\nStarting datanodes\nERROR: Attempting to operate on hdfs datanode as root\nERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.\nStarting secondary namenodes [LindeMBP]\nERROR: Attempting to operate on hdfs secondarynamenode as root\nERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.\n2019-07-28 21:43:09,844 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable<\/pre>\n<p style=\"text-align: justify;\">\u9019\u662f Hadoop-2.8.2 \u4ee5\u524d\u4e0d\u6703\u51fa\u73fe\u7684\uff01\u89e3\u6c7a\u8fa6\u6cd5\u662f\u5728 \/opt\/hadoop-3.1.2\/sbin\/start-dfs.sh \u52a0\u5165\u4ee5\u4e0b\u7684\u8a0a\u606f\uff1a<\/p>\n<pre class=\"lang:bash\">HDFS_DATANODE_USER=\u4f7f\u7528\u8005\u540d\u7a31\nHADOOP_DATANODE_SECURE_USER=\u4f7f\u7528\u8005\u540d\u7a31\nHDFS_NAMENODE_USER=\u4f7f\u7528\u8005\u540d\u7a31\nHDFS_SECONDARYNAMENODE_USER=\u4f7f\u7528\u8005\u540d\u7a31<\/pre>\n\n\n\n<p>\u63a5\u4e0b\u4f86\u518d\u91cd\u65b0\u57f7\u884c .\/start-dfs.sh \u53ef\u4ee5\u5f97\u5230\u4ee5\u4e0b\u8a0a\u606f\uff1a<\/p>\n<pre class=\"lang:bash\">lindembp:sbin linyuting$ .\/start-dfs.sh\nStarting namenodes on [localhost]\nStarting datanodes\nStarting secondary namenodes [lindembp]\nlindembp: ssh: Could not resolve hostname lindembp: nodename nor servname provided, or not known\n2019-07-31 22:23:13,273 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable<\/pre>\n\n\n\n<p>\u7d50\u679c\u5229\u7528 jps \u53ef\u4ee5\u89c0\u5bdf\u5230 NameNode, DataNode \u5df2\u7d93\u88ab\u958b\u555f\u4e86\uff1a<\/p>\n<pre class=\"lang:bash\">4883 NameNode\n1158 OracleIdeLauncher\n4968 DataNode\n5049 Jps<\/pre>\n<p>\u5229\u7528\u700f\u89bd\u5668\u67e5\u770b localhost:9870\uff0c\u8ddf Hadoop 2 \u8981\u67e5\u770b\u7684 port (50070) \u4e0d\u592a\u4e00\u6a23\uff0c\u9019\u908a\u8981\u6ce8\u610f\u4e00\u4e0b\uff01<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"520\" src=\"https:\/\/myoceane.fr\/wp-content\/uploads\/2019\/07\/\u87a2\u5e55\u5feb\u7167-2019-07-31-\u4e0b\u534810.26.01-1024x520.png\" alt=\"\" class=\"wp-image-1290\" srcset=\"https:\/\/myoceane.fr\/wp-content\/uploads\/2019\/07\/\u87a2\u5e55\u5feb\u7167-2019-07-31-\u4e0b\u534810.26.01-1024x520.png 1024w, https:\/\/myoceane.fr\/wp-content\/uploads\/2019\/07\/\u87a2\u5e55\u5feb\u7167-2019-07-31-\u4e0b\u534810.26.01-300x152.png 300w, https:\/\/myoceane.fr\/wp-content\/uploads\/2019\/07\/\u87a2\u5e55\u5feb\u7167-2019-07-31-\u4e0b\u534810.26.01-768x390.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul>\n<li>\u9700\u8981\u95dc\u6ce8\u7684\u5730\u65b9\u662f Security is off\uff0c\u66f4\u591a\u7684 property \u8981\u88ab\u8a2d\u5b9a\u9032 -site.xml \u624d\u80fd\u5920\u958b\u555f\u5b89\u5168\u6027\u7684\u5de5\u80fd\uff01<\/li>\n<li>\u8a18\u5f97\u8981\u6253 hdfs dfs -mkdir \/home \u65b0\u589e\u4e00\u500b\u5b50\u76ee\u9304\uff0c\u7136\u5f8c hdfs dfs -ls \/ \u67e5\u8a62\u4e00\u4e0b\uff1a\uff09<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f7f\u7528\u60f3\u8981\u4f7f\u7528 root \u7576\u4f5c\u57f7\u884c\u8005\u7684\u8a71\u6703\u51fa\u73fe\u4ee5\u4e0b\u72c0\u6cc1\uff0c\u76ee\u524d\u9084\u4e0d\u77e5\u9053\u8981\u600e\u9ebc\u89e3\u6c7a\uff01<\/p>\n<pre class=\"lang:bash\">bash-5.0: whoami\nroot\nbash-5.0:.\/start-dfs.sh\nStarting namenodes on [localhost]\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-functions.sh: line 398: syntax error near unexpected token `&lt;'\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-functions.sh: line 398: `  done &lt; &lt;(for text in \"${input[@]}\"; do'\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 70: hadoop_deprecate_envvar: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 87: hadoop_bootstrap: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 104: hadoop_parse_args: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 105: shift: : numeric argument required\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 244: hadoop_need_reexec: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 252: hadoop_verify_user_perm: command not found\n\/opt\/hadoop-3.1.2\/bin\/hdfs: line 213: hadoop_validate_classname: command not found\n\/opt\/hadoop-3.1.2\/bin\/hdfs: line 214: hadoop_exit_with_usage: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 263: hadoop_add_client_opts: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 270: hadoop_subcommand_opts: command not found\n\/opt\/hadoop-3.1.2\/bin\/..\/libexec\/hadoop-config.sh: line 273: hadoop_generic_java_subcmd_handler: command not found<\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u95dc\u65bc\u5b89\u88dd Hdfs \u7684\u89e3\u8aaa\u6587\uff0c\u7db2\u8def\u4e0a\u6709\u8a31\u591a\u8cc7\u6e90\uff0c\u5982\u679c\u662f Hadoop-2.8.2 \u7684\u5b89\u88dd\u89e3\u8aaa\uff0c\u840c\u7238\u89ba\u5f97\u75de\u5ba2\u90a6\u7684\u9435\u4eba\u8cfd Hadoop ecosystem \u5de5\u5177\u7c21\u4ecb, \u5b89\u88dd\u6559\u5b78\u8207\u5404\u7a2e\u60c5\u5883\u4f7f\u7528 \u8b1b\u89e3\u7684\u5f88\u8a73\u7d30\uff0c\u672c\u7bc7\u60f3\u8981\u5448\u73fe\u5728\u5b89\u88dd\u65b0\u7684 Hadoop-3.1.2 \u7684\u6642\u5019\u6703\u6709\u4ec0\u9ebc\u6a23\u7684\u554f\u984c\u3002\u672c\u7bc7\u4e3b\u8981\u53c3\u8003 hadoop-3.1.2 Single Node Cluster \u8a2d\u5b9a\u7684\u9023\u7d50\u00a0Link\u00a0\u3002<\/p>\n","protected":false},"author":1,"featured_media":1321,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[266,267],"class_list":["post-1210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bigdata-ml","tag-hdfs","tag-267"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[HDFS] \u5b89\u88dd HDFS (Hadoop-3.1.2) - \u60f3\u65b9\u6d89\u6cd5 - \u91cf\u74f6\u5916\u7684\u5929\u7a7a M-Y-Oceane<\/title>\n<meta name=\"description\" content=\"\u95dc\u65bc\u5b89\u88dd Hdfs \u7684\u89e3\u8aaa\u6587\uff0c\u7db2\u8def\u4e0a\u6709\u8a31\u591a\u8cc7\u6e90\uff0c\u5982\u679c\u662f Hadoop-2.8.2 \u7684\u5b89\u88dd\u89e3\u8aaa\uff0c\u840c\u7238\u89ba\u5f97\u75de\u5ba2\u90a6\u7684\u9435\u4eba\u8cfd Hadoop ecosystem \u5de5\u5177\u7c21\u4ecb, \u5b89\u88dd\u6559\u5b78\u8207\u5404\u7a2e\u60c5\u5883\u4f7f\u7528 \u8b1b\u89e3\u7684\u5f88\u8a73\u7d30\uff0c\u672c\u7bc7\u60f3\u8981\u5448\u73fe\u5728\u5b89\u88dd\u65b0\u7684 Hadoop-3.1.2 \u7684\u6642\u5019\u6703\u6709\u4ec0\u9ebc\u6a23\u7684\u554f\u984c\u3002\u672c\u7bc7\u4e3b\u8981\u53c3\u8003 hadoop-3.1.2 Single Node Cluster \u8a2d\u5b9a\u7684\u9023\u7d50\u00a0Link\u00a0\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/myoceane.fr\/index.php\/hdfs-\u5b89\u88dd-hdfs\/\" \/>\n<meta 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