{"id":2091,"date":"2023-04-12T08:50:01","date_gmt":"2023-04-12T00:50:01","guid":{"rendered":"https:\/\/aic.leexinghai.com\/?p=2091"},"modified":"2023-04-12T08:50:01","modified_gmt":"2023-04-12T00:50:01","slug":"h30501-%e5%ae%9e%e9%aa%8c5-wordcount","status":"publish","type":"post","link":"https:\/\/www.leexinghai.com\/aic\/h30501-%e5%ae%9e%e9%aa%8c5-wordcount\/","title":{"rendered":"H30501-\u5b9e\u9a8c5-WordCount"},"content":{"rendered":"\n<p><strong>\u4e00\u3001\u5b9e\u9a8c\u76ee\u7684<\/strong><strong><\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" type=\"a\">\n<li>\u901a\u8fc7\u5b9e\u9a8c\u638c\u63e1\u57fa\u672c\u7684MapReduce\u7f16\u7a0b\u65b9\u6cd5\uff1b<\/li>\n\n\n\n<li>\u638c\u63e1\u7528MapReduce\u89e3\u51b3\u4e00\u4e9b\u5e38\u89c1\u7684\u6570\u636e\u5904\u7406\u95ee\u9898\uff0c\u5305\u62ec\u6570\u636e\u53bb\u91cd\u3001\u6570\u636e\u6392\u5e8f\u548c\u6570\u636e\u6316\u6398\u7b49\u3002<\/li>\n<\/ol>\n\n\n\n<p><strong>\u4e8c\u3001\u5b9e\u9a8c\u4eea\u5668\u8bbe\u5907\u6216\u6750\u6599<\/strong><strong><\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\" type=\"a\">\n<li>Ubuntu 20.0.1<\/li>\n\n\n\n<li>Hadoop 3.3.1\uff08\u81f3\u5c11\u5b8c\u6210\u4f2a\u5206\u5e03\u6a21\u5f0f\uff09<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JDK 1.8.0_301<\/li>\n\n\n\n<li>Eclipse 2019-12(R)<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4e09\u3001\u5b9e\u9a8c\u539f\u7406<\/strong><strong><\/strong><\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u5728Linux\u7cfb\u7edf\u672c\u5730\u521b\u5efa\u4e24\u4e2a\u6587\u4ef6\uff0c\u5373\u6587\u4ef6wordfile1.txt\u548cwordfile2.txt\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8fd9\u4e24\u4e2a\u6587\u4ef6\u53ef\u80fd\u4f1a\u975e\u5e38\u5927\uff0c\u4f1a\u88ab\u5206\u5e03\u5b58\u50a8\u5230\u591a\u4e2a\u8282\u70b9\u4e0a\u3002\u4f46\u662f\uff0c\u4e3a\u4e86\u7b80\u5316\u4efb\u52a1\uff0c\u8fd9\u91cc\u7684\u4e24\u4e2a\u6587\u4ef6\u53ea\u5305\u542b\u51e0\u884c\u7b80\u5355\u7684\u5185\u5bb9\u3002\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u9488\u5bf9\u8fd9\u4e24\u4e2a\u5c0f\u6570\u636e\u96c6\u6837\u672c\u7f16\u5199\u7684MapReduce\u8bcd\u9891\u7edf\u8ba1\u7a0b\u5e8f\uff0c\u4e0d\u4f5c\u4efb\u4f55\u4fee\u6539\uff0c\u5c31\u53ef\u4ee5\u7528\u6765\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u96c6\u7684\u8bcd\u9891\u7edf\u8ba1\u3002<\/p>\n\n\n\n<p>\u6587\u4ef6wordfile1.txt\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>I love Spark<\/p>\n\n\n\n<p>I love Hadoop<\/p>\n\n\n\n<p>\u6587\u4ef6wordfile2.txt\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>Hadoop is good<\/p>\n\n\n\n<p>Spark is fast<\/p>\n\n\n\n<p>\u5047\u8bbeHDFS\u4e2d\u6709\u4e00\u4e2a\/user\/hadoop\/input\u6587\u4ef6\u5939\uff0c\u5e76\u4e14\u6587\u4ef6\u5939\u4e3a\u7a7a\uff0c\u8bf7\u628a\u6587\u4ef6wordfile1.txt\u548cwordfile2.txt\u4e0a\u4f20\u5230HDFS\u4e2d\u7684input\u6587\u4ef6\u5939\u4e0b\u3002\u73b0\u5728\u9700\u8981\u8bbe\u8ba1\u4e00\u4e2a\u8bcd\u9891\u7edf\u8ba1\u7a0b\u5e8f\uff0c\u7edf\u8ba1input\u6587\u4ef6\u5939\u4e0b\u6240\u6709\u6587\u4ef6\u4e2d\u6bcf\u4e2a\u5355\u8bcd\u7684\u51fa\u73b0\u6b21\u6570\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u7a0b\u5e8f\u5e94\u8be5\u8f93\u51fa\u5982\u4e0b\u5f62\u5f0f\u7684\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>fast&nbsp; 1<\/p>\n\n\n\n<p>good&nbsp;&nbsp; 1<\/p>\n\n\n\n<p>Hadoop&nbsp;&nbsp; 2<\/p>\n\n\n\n<p>I&nbsp;&nbsp;&nbsp; 2<\/p>\n\n\n\n<p>is&nbsp;&nbsp; 2<\/p>\n\n\n\n<p>love&nbsp;&nbsp; 2<\/p>\n\n\n\n<p>Spark&nbsp;&nbsp; 2<\/p>\n\n\n\n<p><strong>\u56db\u3001\u5b9e\u9a8c\u5185\u5bb9\u4e0e\u6b65\u9aa4<\/strong><strong><\/strong><\/p>\n\n\n\n<p>1.\u8f93\u5165<\/p>\n\n\n\n<p>2.\u5904\u7406<\/p>\n\n\n\n<p>\uff081\uff09Map\u7684\u5904\u7406\u903b\u8f91<\/p>\n\n\n\n<p>\uff082\uff09Reduce\u7684\u5904\u7406\u903b\u8f91<\/p>\n\n\n\n<p>\uff083\uff09main()\u6d4b\u8bd5<\/p>\n\n\n\n<p>3.\u8f93\u51fa<\/p>\n\n\n\n<p>\uff081\uff09\u7f16\u8bd1\u6253\u5305<\/p>\n\n\n\n<p>\uff082\uff09\u8fd0\u884cjar<strong><\/strong><\/p>\n\n\n\n<p><strong>\u4e94\u3001\u5b9e\u9a8c\u7ed3\u679c\u4e0e\u5206\u6790<\/strong><\/p>\n\n\n\n<p>1.\u521b\u5efa\u6587\u4ef6wordfile1\u548cwordfile2\u4e24\u4e2a\u6587\u4ef6\uff0c\u547d\u4ee4\u5982\u56fe1\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"804\" height=\"69\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-78.png\" alt=\"\" class=\"wp-image-2092\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-78.png 804w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-78-300x26.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-78-768x66.png 768w\" sizes=\"auto, (max-width: 804px) 100vw, 804px\" \/><figcaption class=\"wp-element-caption\">\u56fe1<\/figcaption><\/figure>\n\n\n\n<p>2.\u5728\u4e24\u4e2a\u6587\u4ef6\u4e2d\u8f93\u5165\u4e00\u4e9b\u6587\u672c\uff0c\u8fd9\u91cc\u4ee5\u5b9e\u9a8c\u8981\u6c42\u6587\u672c\u4e3a\u8981\u6c42\uff0c\u56de\u663e\u6587\u4ef6\u5185\u5bb9\u5982\u56fe2\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"121\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-82.png\" alt=\"\" class=\"wp-image-2096\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-82.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-82-300x42.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-82-768x107.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe2<\/figcaption><\/figure>\n\n\n\n<p>3.\u5728Eclipse\u4e2d\u65b0\u5efa\u4e00\u4e2aWordCount\u7684\u7c7b\uff0c\u7136\u540e\u901a\u8fc7JAVA API\u7f16\u7a0b\u8fdb\u884c\u6253\u5305\uff08\u4ee3\u7801\u53ef\u81f3\u6587\u672b\u9644\u4ef6\u4e0b\u8f7d\uff09\u3002\u4e0a\u4f20\u5230Hadoop\u670d\u52a1\u5bb9\u5668\u5185\uff0c\u4ee3\u7801\u90e8\u5206\u5185\u5bb9\u5982\u56fe3\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"520\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-79.png\" alt=\"\" class=\"wp-image-2093\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-79.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-79-300x180.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-79-768x462.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe3<\/figcaption><\/figure>\n\n\n\n<p>4.\u901a\u8fc7dfs\u547d\u4ee4\u5220\u9664Hadoop\u5bb9\u5668\u5185\u7684input output\u6587\u4ef6\u5939\uff0c\u91cd\u65b0\u521b\u5efainput\u6587\u4ef6\u5939\uff08\u8fd9\u91cc\u4e5f\u53ef\u901a\u8fc7\u5220\u9664input\u4e0b\u6240\u6709\u6587\u4ef6\u5b8c\u6210\uff09\uff0c\u4e0a\u4f20wordfile1,wordfile2\u5230input\u6587\u4ef6\u5939\u3002\u6700\u540e\u901a\u8fc7\u8c03\u7528\u672c\u5730\u521b\u5efa\u597d\u7684Jar\u5305\u6587\u4ef6\u8bfb\u53d6input\u6587\u4ef6\u5939\u4e2d\u6587\u4ef6\u5185\u5bb9\u8fdb\u884c\u8bcd\u9891\u7edf\u8ba1\uff0c\u7ed3\u679c\u8f93\u51fa\u5230output\u6587\u4ef6\u5939\u4e2d\uff08\u5982\u679c\u5df2\u6709\u540c\u540d\u6587\u4ef6\u5939\uff0c\u4f1a\u8f93\u51fa\u5931\u8d25\uff09\uff0c\u8fc7\u7a0b\u547d\u4ee4\u5982\u56fe4\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"303\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-80.png\" alt=\"\" class=\"wp-image-2094\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-80.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-80-300x105.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-80-768x269.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe4<\/figcaption><\/figure>\n\n\n\n<p>5.\u4f7f\u7528cat\u547d\u4ee4\u56de\u663eoutput\u6587\u4ef6\u5939\u4e0b\u7684\u5185\u5bb9\uff0c\u53ef\u89c1\u6210\u529f\u5b8c\u6210\u8bcd\u9891\u7edf\u8ba1\u3002\u5982\u56fe5\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"333\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-81.png\" alt=\"\" class=\"wp-image-2095\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-81.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-81-300x115.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-81-768x296.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe5<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u9644\u4ef6\u4e0b\u8f7d<\/h2>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-56164d9b-6b13-42a6-9607-5611aec8dc2d\" href=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/WordCount.7z\">WordCount<\/a><a href=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/WordCount.7z\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-56164d9b-6b13-42a6-9607-5611aec8dc2d\">\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u5b9e\u9a8c\u76ee\u7684 \u4e8c\u3001\u5b9e\u9a8c\u4eea\u5668\u8bbe\u5907\u6216\u6750\u6599 \u4e09\u3001\u5b9e\u9a8c\u539f\u7406 \u9996\u5148\uff0c\u5728Linux\u7cfb\u7edf\u672c\u5730\u521b\u5efa\u4e24\u4e2a\u6587\u4ef6\uff0c\u5373\u6587\u4ef6wordfi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2094,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-2091","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bdat"],"_links":{"self":[{"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/posts\/2091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/comments?post=2091"}],"version-history":[{"count":0,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/posts\/2091\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/media?parent=2091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/categories?post=2091"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.leexinghai.com\/aic\/wp-json\/wp\/v2\/tags?post=2091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}