{"id":3339,"date":"2021-05-20T13:37:08","date_gmt":"2021-05-20T05:37:08","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=3339"},"modified":"2023-12-04T14:59:18","modified_gmt":"2023-12-04T06:59:18","slug":"mapreduce%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=3339","title":{"rendered":"MapReduce On Yarn"},"content":{"rendered":"<h1>hdfs<\/h1>\n<ol>\n<li>\u5b58\u50a8\u6a21\u578b<br \/>\n\u5207\u6362\uff0c\u6563\u5217 -> \u5206\u6cbb \u76ee\u7684\uff1a\u5206\u5e03\u5f0f\u8ba1\u7b97<\/p>\n<\/li>\n<li>\n<p>\u5b9e\u73b0 -> \u6846\u67b6<br \/>\n\u89d2\u8272 NN\uff0cDN<br \/>\n\u7279\u957f\/\u7279\u70b9\uff1a -> \u67b6\u6784\u5e08\uff1a\u3010\u6280\u672f\u9009\u578b\u3011<br \/>\n\u8bfb\u5199\u6d41\u7a0b\u5c31\u5f88\u91cd\u8981<\/p>\n<\/li>\n<\/ol>\n<h1>mapreduce<\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/oss.wyxxt.org.cn\/images\/2021\/09\/18\/wp_editor_md_1aa796ab39bff483ab895f339bd57148.jpg\" alt=\"\" \/><\/p>\n<p>\u6279\u91cf\u8ba1\u7b97 \u6d41\u5f0f\u8ba1\u7b97<\/p>\n<ol>\n<li>\u8ba1\u7b97\u6a21\u578b<br \/>\n2\u9636\u6bb5\uff1amap\u548creduce\u662f\u4e00\u79cd\u963b\u585e\u5173\u7cfb<br \/>\nmap\u9636\u6bb5\uff1a<br \/>\n\u5355\u6761\u8bb0\u5f55\u52a0\u5de5\u548c\u5904\u7406<br \/>\nreduce\u9636\u6bb5\uff1a<br \/>\n\u6309\u7ec4\uff0c\u591a\u6761\u8bb0\u5f55\u52a0\u5de5\u548c\u5904\u7406<\/p>\n<\/li>\n<li>\n<p>\u5b9e\u73b0 -> \u6846\u67b6<br \/>\n\u8ba1\u7b97\u5411\u6570\u636e\u79fb\u52a8\uff1a<br \/>\nhdfs\u66b4\u9732\u6570\u636e\u7684\u4f4d\u7f6e<br \/>\n1)\u8d44\u6e90\u7ba1\u7406<br \/>\n2)\u4efb\u52a1\u8c03\u5ea6<\/p>\n<\/li>\n<\/ol>\n<p>&#8211; \u89d2\u8272\uff1a<br \/>\nJobTracker\uff1a<br \/>\n1,\u8d44\u6e90\u7ba1\u7406<br \/>\n2,\u4efb\u52a1\u8c03\u5ea6<br \/>\nTaskTracker\uff1a<br \/>\n\u4efb\u52a1\u7ba1\u7406<br \/>\n\u8d44\u6e90\u6c47\u62a5<br \/>\n\u3010Cli\uff1a\uff1f\u3011<\/p>\n<h1>Cli<\/h1>\n<p>1\uff0c\u4f1a\u6839\u636e\u6bcf\u6b21\u7684\u8ba1\u7b97\u6570\u636e\uff0c\u54a8\u8be2NN\u5143\u6570\u636e\uff08block\uff09->\u7b97\uff1asplit \u5f97\u5230\u4e00\u4e2a\u5207\u7247\u7684\u3010\u6e05\u5355\u3011\uff0cmap\u7684\u6570\u91cf\u5c31\u6709\u4e86<br \/>\nsplit\u662f\u903b\u8f91\u7684\uff0cblock\u662f\u7269\u7406\u7684\uff0cblock\u8eab\u4e0a\u6709\uff08offset\uff0clocations\uff09\uff0csplit\u548cblock\u662f\u6709\u6620\u5c04\u5173\u7cfb\u7684<br \/>\n\u7ed3\u679c\uff1asplit\u5305\u542b\u504f\u79fb\u91cf\uff0c\u4ee5\u53casplit\u5bf9\u5e94\u7684map\u4efb\u52a1\u5e94\u8be5\u79fb\u52a8\u5230\u90a3\u4e9b\u8282\u70b9\uff08locations\uff09<br \/>\nsplit01 A 0 500  n1 n3 n5<br \/>\n\u53ef\u4ee5\u652f\u6301\u8ba1\u7b97\u5411\u6570\u636e\u79fb\u52a8\uff5e\uff01\uff01\uff01<br \/>\n2\uff0c\u751f\u6210\u8ba1\u7b97\u7a0b\u5e8f\u672a\u6765\u8fd0\u884c\u65f6\u7684\u76f8\u5173\u914d\u7f6e\u7684\u6587\u4ef6\uff1a*.xml<br \/>\n3\uff0c\u672a\u6765\u7684\u79fb\u52a8\u5e94\u8be5\u76f8\u5bf9\u53ef\u9760<br \/>\ncli\u4f1a\u5c06jar\uff0csplit\u6e05\u5355\uff0c\u914d\u7f6exml \u4e0a\u4f20\u5230hdfs\u7684\u76ee\u5f55\u4e2d\uff08\u4e0a\u4f20\u7684\u6570\u636e\uff0c\u526f\u672c\u657010\uff09<br \/>\n4\uff0ccli\u4f1a\u8c03\u7528JobTracker\uff0c\u901a\u77e5\u8981\u542f\u52a8\u4e00\u4e2a\u8ba1\u7b97\u7a0b\u5e8f\u4e86\uff0c\u5e76\u4e14\u544a\u77e5\u6587\u4ef6\u90fd\u653e\u5728\u4e86hdfs\u7684\u54ea\u4e9b\u5730\u65b9<\/p>\n<h1>JobTracker<\/h1>\n<p>JobTracker\u624b\u52a8\u542f\u52a8\u7a0b\u5e8f\u4e4b\u540e\uff1a<br \/>\n1\uff0c\u4ecehdfs\u4e2d\u53d6\u56de\u3010split\u6e05\u5355\u3011<br \/>\n2\uff0c\u6839\u636e\u81ea\u5df1\u6536\u5230\u7684TaskTracker\u6c47\u62a5\u7684\u8d44\u6e90\uff0c\u6700\u7ec8\u786e\u5b9a\u6bcf\u4e00\u4e2asplit\u5bf9\u5e94\u7684map\u5e94\u8be5\u53bb\u5230\u54ea\u4e00\u4e2a\u8282\u70b9\uff0c\u3010\u786e\u5b9a\u6e05\u5355\u3011<br \/>\n3\uff0c\u672a\u6765\uff0cTaskTracker\u5728\u5fc3\u8df3\u7684\u65f6\u5019\uff0c\u4f1a\u53d6\u56de\u5206\u914d\u7ed9\u81ea\u5df1\u7684\u4efb\u52a1\u4fe1\u606f\uff5e\uff01<\/p>\n<h1>TaskTracker<\/h1>\n<p>1\uff0c\u5728\u5fc3\u8df3\u53d6\u56de\u4efb\u52a1\u540e<br \/>\n2\uff0c\u4ecehdfs\u4e2d\u4e0b\u8f7djar\uff0cxml&#8230;\u5230\u672c\u673a<br \/>\n3\uff0c\u6700\u7ec8\u542f\u52a8\u4efb\u52a1\u63cf\u8ff0\u4e2d\u7684MapTask\/ReduceTask\uff08\u6700\u7ec8\uff0c\u4ee3\u7801\u5728\u67d0\u4e00\u4e2a\u8282\u70b9\u88ab\u542f\u52a8\uff0c\u662f\u901a\u8fc7\uff0ccli\u4e0a\u4f20\uff0cTaskTracker\u4e0b\u8f7d\uff1a\u8ba1\u7b97\u5411\u6570\u636e\u79fb\u52a8\u7684\u5b9e\u73b0\uff09<\/p>\n<h1>\u95ee\u9898<\/h1>\n<p>JobTracker 3\u4e2a\u95ee\u9898\uff1a<br \/>\n1\uff0c\u5355\u70b9\u6545\u969c<br \/>\n2\uff0c\u538b\u529b\u8fc7\u5927<br \/>\n3\uff0c\u96c6\u6210\u4e86\u3010\u8d44\u6e90\u7ba1\u7406\u548c\u4efb\u52a1\u8c03\u5ea6\u3011\uff0c\u4e24\u8005\u8026\u5408<br \/>\n\u5f0a\u7aef\uff1a\u672a\u6765\u65b0\u7684\u8ba1\u7b97\u6846\u67b6\u4e0d\u80fd\u670d\u7528\u8d44\u6e90\u7ba1\u7406<br \/>\n1\uff0c\u91cd\u590d\u9020\u8f6e\u5b50<br \/>\n2\uff0c\u56e0\u4e3a\u5404\u81ea\u5b9e\u73b0\u8d44\u6e90\u7ba1\u7406\uff0c\u4f46\u662f\u4ed6\u4eec\u90e8\u7f72\u5728\u540c\u4e00\u6279\u786c\u4ef6\u4e0a\uff0c\u56e0\u4e3a\u9694\u79bb\u7684\uff0c\u6240\u4ee5\u4e0d\u80fd\u611f\u77e5\u5bf9\u65b9\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u6240\u4ee5\uff1a\u8d44\u6e90\u4e89\u62a2\uff5e\uff01\uff01<\/p>\n<h1>\u601d\u8def\uff1a\uff08\u56e0\u679c\u5173\u7cfb\u5bfc\u5411\u5b66\u4e60\uff09<\/h1>\n<p>\u3010\u8ba1\u7b97\u8981\u5411\u6570\u636e\u79fb\u52a8\u3011<br \/>\n->\u54ea\u4e9b\u8282\u70b9\u53ef\u4ee5\u53bb\u5462\uff08\u9700\u8981\u6709\u6574\u4f53\u8d44\u6e90\u7684\u628a\u63a7\uff09<br \/>\n->\u786e\u5b9a\u4e86\u8282\u70b9\u540e\uff0c\u5bf9\u65b9\u600e\u4e48\u77e5\u9053\u5462\uff08\u4efb\u52a1\u8c03\u5ea6\uff09\uff0c\u8fd8\u6709\u6bd4\u5982\u6709\u4e00\u4e2a\u5931\u8d25\u4e86\uff0c\u5e94\u8be5\u91cd\u65b0\u5728\u54ea\u4e2a\u8282\u70b9\u91cd\u8bd5<br \/>\n->\u62c9\u4e2aJobTracker\u641e\u5b9a\u4e86\u8fd92\u4ef6\u4e8b\u60c5\u3002\u3002\u3002\u4f46\u662f\uff0c\u540e\u6765\u95ee\u9898\u4e5f\u66b4\u9732\u4e86\u3002\u3002\u3002<\/p>\n<h1>hadoop2.x<\/h1>\n<p>\u89e3\u51b3\u4e0a\u9762\u7684\u95ee\u9898<\/p>\n<h1>yarn\u67b6\u6784<\/h1>\n<p>\u8d44\u6e90\u7ba1\u7406<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/oss.wyxxt.org.cn\/images\/2021\/09\/18\/wp_editor_md_eda1143bfc55da3a3c086fa1830f0dd4.jpg\" alt=\"\" \/><\/p>\n<p>yarn<br \/>\n1. \u6a21\u578b\uff1a<br \/>\ncontainer\u5bb9\u5668 \u4e0d\u662fdocker<br \/>\n\u865a\u7684\uff1a<br \/>\n\u5bf9\u8c61\uff1a\u5c5e\u6027\uff1aNodeManager cpu mem io\u91cf<br \/>\n\u7269\u7406\u7684\uff1a<br \/>\nJVM->\u64cd\u4f5c\u7cfb\u7edf\u8fdb\u7a0b<br \/>\n1\uff0cNM\u4f1a\u6709\u7ebf\u7a0b\u76d1\u63a7container\u8d44\u6e90\u60c5\u51b5\uff0c\u8d85\u989d\uff0cNM\u76f4\u63a5kill\u6389<br \/>\n2\uff0ccgroup\u5185\u6838\u7ea7\u6280\u672f\uff1a\u5728\u542f\u52a8JVM\u8fdb\u7a0b\uff0c\u7531kernel\u7ea6\u675f\u6b7b<br \/>\n<em>\u6574\u5408docker<\/em><\/p>\n<ol start=\"2\">\n<li>\u5b9e\u73b0\uff1a\u67b6\u6784\/\u6846\u67b6<br \/>\n\u89d2\u8272\uff1a<br \/>\nResourceManager \u4e3b<br \/>\n\u8d1f\u8d23\u6574\u4f53\u8d44\u6e90\u7684\u7ba1\u7406<br \/>\nNodeManager \u4ece<br \/>\n\u5411ResourceManager\u6c47\u62a5\u5fc3\u8df3\uff0c\u63d0\u4ea4\u81ea\u5df1\u7684\u8d44\u6e90\u60c5\u51b5<\/li>\n<\/ol>\n<p>MR\u8fd0\u884c MapReduce on yarn<\/p>\n<p>1\uff0cMR-cli\uff08\u5207\u7247\u6e05\u5355\/\u914d\u7f6e\/jar\/\u4e0a\u4f20\u5230hdfs\uff09<br \/>\n\u8bbf\u95eeRM\u7533\u8bf7AppMaster<br \/>\n2\uff0cRM\u9009\u62e9\u4e00\u53f0\u4e0d\u5fd9\u7684\u8282\u70b9\u901a\u77e5NM\u542f\u52a8\u4e00\u4e2aContainer\uff0c\u5728\u91cc\u9762\u53cd\u5c04\u4e00\u4e2aMRAppMaster<br \/>\n3\uff0c\u542f\u52a8MRAppMaster\uff0c\u4ecehdfs\u4e0b\u8f7d\u5207\u7247\u6e05\u5355\uff0c\u5411RM\u7533\u8bf7\u8d44\u6e90<br \/>\n4\uff0c\u7531RM\u6839\u636e\u81ea\u5df1\u638c\u63e1\u7684\u8d44\u6e90\u60c5\u51b5\u5f97\u5230\u4e00\u4e2a\u786e\u5b9a\u6e05\u5355\uff0c\u901a\u77e5NM\u6765\u542f\u52a8container<br \/>\n5\uff0cContainer\u542f\u52a8\u540e\u4f1a\u53cd\u5411\u6ce8\u518c\u5230\u5df2\u7ecf\u542f\u52a8\u7684MRAppMaster\u8fdb\u7a0b<br \/>\n6\uff0cMRAppMaster\uff08\u66fe\u7ecf\u7684JobTracker\u9609\u5272\u7248\u4e0d\u5e26\u8d44\u6e90\u7ba1\u7406\uff09\u6700\u7ec8\u5c06\u4efb\u52a1Task\uff08\u6d88\u606f\uff09\u53d1\u9001\u7ed9container<br \/>\n7\uff0ccontainer\u4f1a\u53cd\u5c04\u76f8\u5e94\u7684Task\u7c7b\u4e3a\u5bf9\u8c61\uff0c\u8c03\u7528\u65b9\u6cd5\u6267\u884c\uff0c\u5176\u7ed3\u679c\u5c31\u662f\u6211\u4eec\u7684\u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\u7684\u6267\u884c\u8fc7\u7a0b<br \/>\n8\uff0c\u8ba1\u7b97\u6846\u67b6\u90fd\u6709Task\u5931\u8d25\u91cd\u8bd5\u7684\u673a\u5236<\/p>\n<p>\u7ed3\u8bba\uff1a<\/p>\n<p>\u95ee\u9898\uff1a<br \/>\n1\uff0c\u5355\u70b9\u6545\u969c\uff08\u66fe\u7ecf\u662f\u5168\u5c40\u7684\uff0cJobTracker\u6302\u4e86\uff0c\u6574\u4e2a\u8ba1\u7b97\u5c42\u6ca1\u6709\u4e86\u8c03\u5ea6\uff09<br \/>\nyarn\uff1a\u6bcf\u4e00\u4e2aApp\u6709\u4e00\u4e2a\u81ea\u5df1\u7684AppMaster\u8c03\u5ea6\uff01\uff08\u8ba1\u7b97\u7a0b\u5e8f\u7ea7\u522b\uff09<br \/>\nyarn\u652f\u6301AppMaster\u5931\u8d25\u91cd\u8bd5\uff5e\uff01<br \/>\n2\uff0c\u538b\u529b\u8fc7\u5927<br \/>\nyarn\u4e2d\u6bcf\u4e2a\u8ba1\u7b97\u7a0b\u5e8f\u81ea\u6709AppMaster\uff0c\u6bcf\u4e2aAppMaster\u53ea\u8d1f\u8d23\u81ea\u5df1\u8ba1\u7b97\u7a0b\u5e8f\u7684\u4efb\u52a1\u8c03\u5ea6\uff0c\u8f7b\u91cf\u4e86<br \/>\nAppMaster\u662f\u5728\u4e0d\u540c\u7684\u8282\u70b9\u4e2d\u542f\u52a8\u7684\uff0c\u9ed8\u8ba4\u6709\u4e86\u8d1f\u8f7d\u7684\u5149\u73af<br \/>\n3\uff0c\u96c6\u6210\u4e86\u3010\u8d44\u6e90\u7ba1\u7406\u548c\u4efb\u52a1\u8c03\u5ea6\u3011\uff0c\u4e24\u8005\u8026\u5408<br \/>\n\u56e0\u4e3ayarn\u53ea\u662f\u8d44\u6e90\u7ba1\u7406\uff0c\u4e0d\u8d1f\u8d23\u5177\u4f53\u7684\u4efb\u52a1\u8c03\u5ea6<br \/>\n\u662f\u516c\u7acb\u7684\uff0c\u53ea\u8981\u8ba1\u7b97\u6846\u67b6\u7ee7\u627fyarn\u7684AppMaster\uff0c\u5927\u5bb6\u90fd\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u7edf\u4e00\u8bd5\u56fe\u7684\u8d44\u6e90\u5c42\uff5e\uff01\uff01\uff01<\/p>\n<p>\u603b\u7ed3\u611f\u609f\uff1a<br \/>\n\u4ece1.x\u52302.x<br \/>\nJobTracker\uff0cTaskTracker\u662fMR\u7684\u5e38\u670d\u52a1\u3002\u3002\u3002<br \/>\n2.x\u4e4b\u540e\u6ca1\u6709\u4e86\u8fd9\u4e9b\u670d\u52a1<br \/>\n\u76f8\u5bf9\u7684\uff1aMR\u7684cli\uff0c\u8c03\u5ea6\uff0c\u4efb\u52a1\uff0c\u8fd9\u4e9b\u90fd\u662f\u4e34\u65f6\u7a0b\u5e8f\u4e86\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>hdfs \u5b58\u50a8\u6a21\u578b \u5207\u6362\uff0c\u6563\u5217 -> \u5206\u6cbb \u76ee\u7684\uff1a\u5206\u5e03\u5f0f\u8ba1\u7b97 \u5b9e\u73b0 -> \u6846\u67b6 \u89d2\u8272 NN\uff0cDN \u7279\u957f\/\u7279\u70b9\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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