{"id":131929,"date":"2020-07-06T12:23:15","date_gmt":"2020-07-06T04:23:15","guid":{"rendered":"http:\/\/4563.org\/?p=131929"},"modified":"2020-07-06T12:23:15","modified_gmt":"2020-07-06T04:23:15","slug":"hadoop-%e5%9f%ba%e7%a1%80","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=131929","title":{"rendered":"Hadoop \u57fa\u7840"},"content":{"rendered":"<h3><a href=\"https:\/\/www.studytime.xin\/article\/#HDFS\u7684\u6982\u5ff5\" title=\"HDFS\u7684\u6982\u5ff5\"><\/a>HDFS\u7684\u6982\u5ff5<\/h3>\n<p>Hadoop Distributed File System \uff0cHadoop\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u4e3b\u8981\u7528\u6765\u89e3\u51b3\u6d77\u91cf\u6570\u636e\u7684\u5b58\u50a8\u95ee\u9898<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u6587\u4ef6\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\" title=\"\u6587\u4ef6\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\"><\/a>\u6587\u4ef6\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf<\/h3>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u5757\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\" title=\"\u5757\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\"><\/a>\u5757\u7ea7\u522b\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf<\/h3>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u8bbe\u8ba1\u601d\u60f3\" title=\"\u8bbe\u8ba1\u601d\u60f3\"><\/a>\u8bbe\u8ba1\u601d\u60f3<\/h3>\n<ul>\n<li>\u5206\u6563\u5747\u5300\u5b58\u50a8 dfs.blocksize = 128M<\/li>\n<li>\u5907\u4efd\u5197\u4f59\u5b58\u50a8 dfs.replication = 3<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u91cd\u8981\u7279\u6027\" title=\"\u91cd\u8981\u7279\u6027\"><\/a>\u91cd\u8981\u7279\u6027<\/h3>\n<p>HDFS\u4e2d\u7684\u6587\u4ef6\u5728\u7269\u7406\u4e0a\u662f\u5206\u5757\u5b58\u50a8\uff08block\uff09\uff0c\u5757\u7684\u5927\u5c0f\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u53c2\u6570( dfs.blocksize)\u6765\u89c4\u5b9a\uff0c\u9ed8\u8ba4\u5927\u5c0f\u5728hadoop2.x\u7248\u672c\u4e2d\u662f128M\uff0c\u8001\u7248\u672c\u4e2d\u662f64M<\/p>\n<p>DFS\u6587\u4ef6\u7cfb\u7edf\u4f1a\u7ed9\u5ba2\u6237\u7aef\u63d0\u4f9b\u4e00\u4e2a\u7edf\u4e00\u7684\u62bd\u8c61\u76ee\u5f55\u6811\uff0c\u5ba2\u6237\u7aef\u901a\u8fc7\u8def\u5f84\u6765\u8bbf\u95ee\u6587\u4ef6\uff0c\u5f62\u5982\uff1ahdfs:\/\/namenode:port\/dir-a\/dir-b\/dir-c\/file.dat<\/p>\n<p>\u76ee\u5f55\u7ed3\u6784\u53ca\u6587\u4ef6\u5206\u5757\u4fe1\u606f(\u5143\u6570\u636e)\u7684\u7ba1\u7406\u7531namenode\u8282\u70b9\u627f\u62c5<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#HDFS-\u57fa\u672c\u67b6\u6784\" title=\"HDFS \u57fa\u672c\u67b6\u6784\"><\/a>HDFS \u57fa\u672c\u67b6\u6784<\/h3>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/07\/20200706_5f035f81127ab.png\" alt=\"Hadoop \u57fa\u7840\"><\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#HDFS-\u7684\u89d2\u8272\" title=\"HDFS \u7684\u89d2\u8272\"><\/a>HDFS \u7684\u89d2\u8272<\/h3>\n<p>HDFS\u4e5f\u662f\u6309\u7167Master\u548cSlave\u7684\u7ed3\u6784\u3002\u5206NameNode\u3001SecondaryNameNode\u3001DataNode\u8fd9\u51e0\u4e2a\u89d2\u8272\u3002<\/p>\n<ul>\n<li>\n<p>\u4e3b\u8282\u70b9 NameNode<br \/>HDFS\u96c6\u7fa4\u7ba1\u7406\u8005\uff0c\u8d1f\u8d23\u7ba1\u7406\u6587\u4ef6\u7cfb\u7edf\u539f\u4fe1\u606f\u548cNameNode\u5404\u8282\u70b9<br \/>\u7ba1\u7406\u5143\u4fe1\u606f\uff1a\u7ef4\u62a4\u6574\u4e2a\u6587\u4ef6\u7cfb\u7edf\u76ee\u5f55\u6811\uff0c\u5404\u4e2a\u6587\u4ef6\u7684\u6570\u636e\u5757\u4fe1\u606f\u7b49\u3002<br \/>\u7ba1\u7406NameeNode\uff1a DataNode \u5468\u671f\u6027 NameNode\u6c47\u62a5\u5fc3\u8df3\uff0c\u4e00\u65e6NameNode\u53d1\u73b0\u67d0\u4e2aDataNode\u51fa\u73b0\u6545\u969c\uff0c\u4f1a\u5728\u5176\u4ed6\u5b58\u8d27\u7684DataNode\u4e0a\u91cd\u6784\u4e22\u5931\u7684\u6570\u636e\u5757<\/p>\n<\/li>\n<li>\n<p>\u4ece\u8282\u70b9 DataNode<br \/>\u5b58\u50a8\u5b9e\u9645\u7684\u6570\u636e\u5757\uff0c\u5e76\u5468\u671f\u6027\u901a\u8fc7 \u5fc3\u8df3\u5411NameNode\u6c47\u62a5\u81ea\u5df1\u7684\u72b6\u6001\u4fe1\u606f\u3002<\/p>\n<\/li>\n<li>\n<p>\u5ba2\u6237\u7aef Client<br \/>\u7528\u6237\u901a\u8fc7\u5ba2\u6237\u7aef\u4e0eNamenOde\u548cDataNode\u4ea4\u4e92\uff0c\u5b8c\u6210HDFS\u5173\u8054\uff0c\u6570\u636e\u8bfb\u5199\u7b49\u64cd\u4f5c\u3002<br \/>\u6587\u4ef6\u7684\u5206\u5757\u64cd\u4f5c\u4e5f\u662f\u5ba2\u6237\u7aef\u5b8c\u6210\uff0c\u5f53HDFS\u5199\u5165\u6587\u4ef6\u65f6\u6ca1\u5ba2\u6237\u7aef\u9996\u5148\u5c06\u6587\u4ef6\u5207\u5206\u6210\u77aa\u5927\u7684\u6570\u636e\u5757\uff0c\u4e4b\u540e\u4eceNameNode\u9886\u53d6\u4e09\u4e2aDataNode\u5730\u5740\uff0c\u5e76\u5728\u4ed6\u4eec\u4e4b\u95f4\u5efa\u7acb\u6570\u636e\u6d41\u6c34\u7ebf\uff0c\u5c06\u6570\u636e\u5757\u6d41\u5931\u5199\u5165\u8fd9\u4e9b\u8282\u70b9\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p>secondaryNameNode<br \/>\u8f85\u52a9namenode\u7ba1\u7406\u5143\u6570\u636e\u4fe1\u606f\uff0c\u4ee5\u53ca\u5143\u6570\u636e\u4fe1\u606f\u7684\u51b7\u5907\u4efd<\/p>\n<\/li>\n<li>\n<p>fsimage<br \/>\u5143\u6570\u636e\u955c\u50cf\u6587\u4ef6\uff08\u6587\u4ef6\u7cfb\u7edf\u7684\u76ee\u5f55\u6811\u3002\uff09<\/p>\n<\/li>\n<li>\n<p>edits<br \/>\u5143\u6570\u636e\u7684\u64cd\u4f5c\u65e5\u5fd7\uff08\u9488\u5bf9\u6587\u4ef6\u7cfb\u7edf\u505a\u7684\u4fee\u6539\u64cd\u4f5c\u8bb0\u5f55\uff09<\/p>\n<\/li>\n<li>\n<p>\u5176\u4ed6<br \/>namenode\u5185\u5b58\u4e2d\u5b58\u50a8\u7684\u662f=fsimage+edits\u3002<br \/>SecondaryNameNode\u8d1f\u8d23\u5b9a\u65f6\u9ed8\u8ba41\u5c0f\u65f6\uff0c\u4ecenamenode\u4e0a\uff0c\u83b7\u53d6fsimage\u548cedits\u6765\u8fdb\u884c\u5408\u5e76\uff0c\u7136\u540e\u518d\u53d1\u9001\u7ed9namenode\u3002\u51cf\u5c11namenode\u7684\u5de5\u4f5c\u91cf\u3002<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>HDFS\u7684\u6982\u5ff5 Hadoop Di&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131929"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=131929"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131929\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=131929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=131929"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=131929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}