{"id":1385,"date":"2025-08-02T10:12:00","date_gmt":"2025-08-02T02:12:00","guid":{"rendered":"https:\/\/soledad.pencidesign.net\/soledad-technology-blog2\/wework-is-about-to-become-the-biggest-office-tenant-in-manhattan-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c-c\/"},"modified":"2025-10-24T09:33:25","modified_gmt":"2025-10-24T01:33:25","slug":"the-expensive-education-of-mark-zuckerberg-and-silicon-valley","status":"publish","type":"post","link":"https:\/\/coin-aiot.com\/myone\/the-expensive-education-of-mark-zuckerberg-and-silicon-valley\/","title":{"rendered":"MapReduce\u7684\u5be6\u969b\u7528\u9014"},"content":{"rendered":"\n<p>MapReduce \u7684\u5f37\u9805\u662f\u300c\u628a\u8d85\u5927\u91cf\u3001\u5206\u6563\u5728\u8a31\u591a\u6a5f\u5668\u4e0a\u7684\u8cc7\u6599\uff0c\u505a<strong>\u540c\u4e00\u7a2e\u898f\u5247\u7684\u5e73\u884c\u8655\u7406<\/strong>\uff0c\u518d\u628a\u7d50\u679c\u5f59\u6574\u300d\u3002\u5b83\u6700\u5e38\u898b\u5728\u96e2\u7dda\u6279\u6b21\u4efb\u52d9\uff1a\u6e05\u6d17\u3001\u7d71\u8a08\u3001\u805a\u5408\u3001\u6392\u5e8f\u3001\u5efa\u7acb\u7d22\u5f15\u7b49\u3002\u5e7e\u500b\u5be6\u969b\u7528\u9014\u8207\u6848\u4f8b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u641c\u5c0b\u5f15\u64ce\u7684\u5012\u6392\u7d22\u5f15\uff08Inverted Index\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u8b80\u7db2\u9801 \u2192 \u65b7\u8a5e \u2192 \u8f38\u51fa (term, docID)<\/li>\n\n\n\n<li>Reduce\uff1a\u540c\u4e00 term \u7684 docID \u6e05\u55ae\u5408\u4f75\u3001\u53bb\u91cd\u8207\u4f4d\u7f6e\u8cc7\u8a0a\u5f59\u6574 \u2192 \u751f\u6210\u5012\u6392\u7d22\u5f15<\/li>\n<\/ul>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>\u5927\u898f\u6a21\u65e5\u8a8c\u5206\u6790\uff08\u7db2\u7ad9\/APP\/IoT\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u89e3\u6790\u6bcf\u884c Nginx\/APP log \u2192 \u8f38\u51fa (url, 1)\u3001(userId, bytes) \u7b49<\/li>\n\n\n\n<li>Reduce\uff1a\u6309 key \u52a0\u7e3d \u2192 PV\/UV\u3001\u6d41\u91cf\u3001\u932f\u8aa4\u7387\u3001\u6700\u5e38\u898b\u7684 404 \u8def\u5f91<\/li>\n<\/ul>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>ETL \u8207\u8cc7\u6599\u6e05\u6d17<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u89e3\u6790\u539f\u59cb CSV\/JSON\uff0c\u6b04\u4f4d\u6821\u6b63\u3001\u7f3a\u503c\u8655\u7406\u3001\u6a19\u6e96\u5316 \u2192 \u8f38\u51fa (entityId, normalizedRecord)<\/li>\n\n\n\n<li>Reduce\uff1a\u540c\u4e00 entity \u805a\u5408\u6700\u65b0\/\u6700\u4f73\u7d00\u9304\u3001\u5408\u4f75\u591a\u4f86\u6e90\u6b04\u4f4d \u2192 \u7522\u51fa\u4e7e\u6de8\u4e8b\u5be6\u8868<\/li>\n<\/ul>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>\u53bb\u91cd\u8207\u552f\u4e00\u8a08\u6578\uff08De-dup \/ Distinct\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u8f38\u51fa (fingerprint\/hash, 1)<\/li>\n\n\n\n<li>Reduce\uff1a\u540c hash \u5f59\u6574 \u2192 \u5224\u65b7\u662f\u5426\u91cd\u8907\u3001\u8a08\u7b97\u552f\u4e00\u6578\u91cf\uff08\u5982\u552f\u4e00\u88dd\u7f6e\u6578\uff09<\/li>\n<\/ul>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li>\u9ede\u64ca\u4e32\u6d41\u7684\u6703\u8a71\u5316\uff08Sessionization\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u8f38\u51fa (userId, event)<\/li>\n\n\n\n<li>Reduce\uff1a\u4f9d userId \u6642\u5e8f\u6392\u5e8f\uff0c\u5207\u5206 30 \u5206\u9418\u7121\u64cd\u4f5c\u70ba\u65b0 session \u2192 \u8a08\u7b97\u5e73\u5747\u505c\u7559\/\u8f49\u63db<\/li>\n<\/ul>\n\n\n\n<ol start=\"6\" class=\"wp-block-list\">\n<li>\u5927\u8cc7\u6599\u6392\u5e8f \/ \u57fa\u6e96\u6e2c\u8a66\uff08TeraSort \u985e\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u8b80\u5165\u8a18\u9304\u4e26\u767c\u51fa\u5e36\u6392\u5e8f\u9375\u7684 pair<\/li>\n\n\n\n<li>Reduce\uff1a\u5206\u5340\u5f8c\u65bc\u6bcf\u500b reducer \u5167\u6392\u5e8f \u2192 \u7522\u751f\u5168\u57df\u6709\u5e8f\u8f38\u51fa<\/li>\n<\/ul>\n\n\n\n<ol start=\"7\" class=\"wp-block-list\">\n<li>\u6a5f\u5668\u5b78\u7fd2\u524d\u8655\u7406\uff08\u7279\u5fb5\u5de5\u7a0b\u7684\u6279\u6b21\u7ba1\u7dda\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u62bd\u53d6\u7279\u5fb5\uff08\u5b57\u983b\u3001\u7d71\u8a08\u91cf\u3001\u985e\u5225\u7de8\u78bc\uff09<\/li>\n\n\n\n<li>Reduce\uff1a\u5c0d\u4f7f\u7528\u8005\u6216 item \u805a\u5408\u7279\u5fb5\uff08\u4f8b\u5982 7 \u65e5\u5e73\u5747\u3001\u9ede\u64ca\u6b21\u6578\u3001\u5171\u73fe\u6b21\u6578\uff09\u2192 \u9935\u7d66\u5f8c\u7e8c\u8a13\u7df4<\/li>\n<\/ul>\n\n\n\n<ol start=\"8\" class=\"wp-block-list\">\n<li>\u751f\u7269\u8cc7\u8a0a\u8207\u79d1\u5b78\u904b\u7b97\uff08\u5e8f\u5217\u7d71\u8a08\/\u7247\u6bb5\u6bd4\u5c0d\u7684\u9810\u805a\u5408\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map\uff1a\u5c07\u57fa\u56e0\u8b80\u6bb5\u5207\u7247\u3001\u8a08\u6578 k-mer<\/li>\n\n\n\n<li>Reduce\uff1a\u5f59\u6574 k-mer \u5206\u4f48\uff0c\u7528\u65bc\u5f8c\u7e8c\u6bd4\u5c0d\u6216\u8b8a\u7570\u6aa2\u6e2c<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u9ebc\u6642\u5019\u9078 MapReduce\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8d85\u5927\u898f\u6a21\u3001<strong>\u53ef\u88ab\u5206\u5272\u6210\u300c\u7368\u7acb\u8a18\u9304\u7d1a\u5225\u300d\u7684\u5e73\u884c\u8a08\u7b97<\/strong>\uff0c\u800c\u4e14<strong>\u4e0d\u5728\u4e4e\u5ef6\u9072\uff08\u5206\u9418\uff5e\u5c0f\u6642\u7d1a\uff09<\/strong>\u3002<\/li>\n\n\n\n<li>\u4efb\u52d9\u4ee5<strong>\u4e00\u6b21\u6027\u6279\u6b21<\/strong>\u70ba\u4e3b\uff1a\u751f\u6210\u5831\u8868\u3001\u96e2\u7dda\u7279\u5fb5\u3001\u6bcf\u65e5\u7d22\u5f15\u3001\u6708\u7d50\u7b97\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u9ebc\u6642\u5019\u4e0d\u8981\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9700\u8981<strong>\u4f4e\u5ef6\u9072\/\u4e92\u52d5\u5f0f<\/strong>\u67e5\u8a62\u6216<strong>\u8a18\u61b6\u9ad4\u5167\u53cd\u8986\u8a08\u7b97<\/strong>\uff08\u6a5f\u5668\u5b78\u7fd2\u8fed\u4ee3\u8a13\u7df4\u3001\u5716\u6f14\u7b97\u6cd5\uff09\uff0c\u901a\u5e38\u6539\u7528 Spark\u3001Flink \u6216\u8cc7\u6599\u5009\u5132\/\u5411\u91cf\u8cc7\u6599\u5eab\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5982\u679c\u4f60\u6b63\u5728\u898f\u5283\u4f01\u696d\u5167\u7684\u8cc7\u6599\u7ba1\u7dda\uff0c\u53ef\u4ee5\u628a MapReduce \u8996\u70ba\u300c\u8010\u64cd\u7684\u6279\u6b21\u78da\u982d\u5de5\u300d\uff1a\u524d\u671f\u628a\u539f\u59cb\u8cc7\u6599\u6574\u5e73\u3001\u6e05\u6d17\u3001\u805a\u5408\uff0c\u5f8c\u9762\u518d\u63a5\u5373\u6642\u5f15\u64ce\u6216\u5009\u5132\u505a\u5206\u6790\u8207\u53ef\u8996\u5316\u3002<\/h3>\n\n\n\n<p><em><strong>~\u9233\u6069\u667a\u806f\uff0c\u838a\u6fe0\u79a7<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MapReduce \u7684\u5f37\u9805\u662f\u300c\u628a\u8d85\u5927\u91cf\u3001\u5206\u6563\u5728\u8a31\u591a\u6a5f\u5668\u4e0a\u7684\u8cc7\u6599\uff0c\u505a\u540c\u4e00\u7a2e\u898f\u5247\u7684\u5e73\u884c\u8655\u7406\uff0c\u518d\u628a\u7d50\u679c\u5f59\u6574\u300d\u3002\u5b83\u6700\u5e38\u898b\u5728\u96e2\u7dda\u6279\u6b21\u4efb\u52d9\uff1a\u6e05\u6d17\u3001\u7d71\u8a08\u3001\u805a\u5408\u3001\u6392\u5e8f\u3001\u5efa\u7acb\u7d22\u5f15&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1441,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_canvas","format":"standard","meta":{"content-type":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[23,24,25,22],"tags":[9],"class_list":["post-1385","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-","category-24","category-ai","category-22","tag-technology"],"aioseo_notices":[],"yoast_head":"<!-- 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content=\"2025-08-02T02:12:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-24T01:33:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/coin-aiot.com\/myone\/wp-content\/uploads\/2018\/08\/p10.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin_ktouhfg3\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005:\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin_ktouhfg3\" \/>\n<script type=\"application\/ld+json\" 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