{"id":2135,"date":"2023-04-19T10:26:16","date_gmt":"2023-04-19T02:26:16","guid":{"rendered":"https:\/\/aic.leexinghai.com\/?p=2135"},"modified":"2025-08-02T19:06:32","modified_gmt":"2025-08-02T11:06:32","slug":"h30429-%e5%ae%9e%e9%aa%8c6-mapreduce%e7%9a%84%e7%bc%96%e7%a8%8b%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.leexinghai.com\/aic\/h30429-%e5%ae%9e%e9%aa%8c6-mapreduce%e7%9a%84%e7%bc%96%e7%a8%8b%e5%ae%9e%e8%b7%b5\/","title":{"rendered":"H30429-\u5b9e\u9a8c6-MapReduce\u7684\u7f16\u7a0b\u5b9e\u8df5"},"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\n\n\n<li>JDK 1.8.0_301<\/li>\n\n\n\n<li>Eclipse 2019-12(R)<\/li>\n<\/ol>\n\n\n\n<p><strong>\u4e09\u3001\u5b9e\u9a8c\u539f\u7406<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Map\u51fd\u6570+Reduce\u51fd\u6570+Shuffle\u8fc7\u7a0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"709\" height=\"470\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-103.png\" alt=\"\" class=\"wp-image-2136\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-103.png 709w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-103-300x199.png 300w\" sizes=\"auto, (max-width: 709px) 100vw, 709px\" \/><\/figure>\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.Java API\u7f16\u7a0b\u5b9e\u73b0\u6587\u4ef6\u5408\u5e76\u548c\u53bb\u91cd\u64cd\u4f5c<\/p>\n\n\n\n<p>(1)\u8f93\u5165<\/p>\n\n\n\n<p>(2)\u5904\u7406<\/p>\n\n\n\n<p>(3)\u8f93\u51fa<\/p>\n\n\n\n<p>2.Java API\u7f16\u7a0b\u5b9e\u73b0\u5bf9\u8f93\u5165\u6587\u4ef6\u7684\u6392\u5e8f6<\/p>\n\n\n\n<p>(1)\u8f93\u5165<\/p>\n\n\n\n<p>(2)\u5904\u7406<\/p>\n\n\n\n<p>(3)\u8f93\u51fa<\/p>\n\n\n\n<p>3.Java API\u7f16\u7a0b\u5b9e\u73b0\u5bf9\u7ed9\u5b9a\u7684\u8868\u683c\u8fdb\u884c\u4fe1\u606f\u6316\u639810<\/p>\n\n\n\n<p>(1)\u8f93\u5165<\/p>\n\n\n\n<p>(2)\u5904\u7406<\/p>\n\n\n\n<p>(3)\u8f93\u51fa<strong><\/strong><\/p>\n\n\n\n<p><strong>\u4e94\u3001\u5b9e\u9a8c\u7ed3\u679c\u4e0e\u5206\u6790<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">0.\u672c\u6559\u7a0b\u7b2c1-5\u6b65\u4e3aJava API\u7f16\u7a0b\u5b9e\u73b0\u6587\u4ef6\u5408\u5e76\u548c\u53bb\u91cd\u64cd\u4f5c\uff1b7-10\u6b65\u4e3aJava API\u7f16\u7a0b\u5b9e\u73b0\u5bf9\u8f93\u5165\u6587\u4ef6\u7684\u6392\u5e8f\uff1b12-15\u6b65\u4e3aJava API\u7f16\u7a0b\u5b9e\u73b0\u5bf9\u7ed9\u5b9a\u7684\u8868\u683c\u8fdb\u884c\u4fe1\u606f\u6316\u6398\u3002\u76f8\u5173\u8f93\u5165\u6587\u4ef6\u548c\u7c7b\u6587\u4ef6\u8bf7\u81f3\u9644\u4ef6\u4e0b\u8f7d\u3002<\/h2>\n\n\n\n<p>1.\u542f\u52a8hadoop\u548chbase\uff0c\u547d\u4ee4\u548c\u7ed3\u679c\u5982\u56fe1\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"468\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-104.png\" alt=\"\" class=\"wp-image-2137\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-104.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-104-300x162.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-104-768x416.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe1<\/figcaption><\/figure>\n\n\n\n<p>2.\u5728\u5bb6\u76ee\u5f55\u4e0b\u521b\u5efa\u4e24\u4e2a\u8f93\u5165\u6e90\u6587\u4ef6\uff0c\u8fd9\u91cc\u4ee5ch701.txt\u548cch702.txt\uff0c\u4e24\u4e2a\u6587\u4ef6\u5185\u5bb9\u53ef\u4ee5\u5728\u5b9e\u9a8c\u6307\u5bfc\u4e66\u4e2d\u83b7\u53d6\uff0c\u4e5f\u53ef\u4ee5\u81ea\u5df1\u81ea\u5b9a\u4e49\u6587\u672c\u5185\u5bb9\uff0c\u4ece\u5b9e\u9a8c\u6307\u5bfc\u4e66\u83b7\u53d6\u7684\u6587\u672c\u5982\u56fe2\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"680\" height=\"575\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-105.png\" alt=\"\" class=\"wp-image-2138\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-105.png 680w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-105-300x254.png 300w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><figcaption class=\"wp-element-caption\">\u56fe2<\/figcaption><\/figure>\n\n\n\n<p>3.\u5728hdfs\u4e0a\u521b\u5efa\u672c\u4f8b\u5b9e\u9a8c\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5c06\u4e24\u4e2a\u6587\u4ef6\u4e0a\u4f20\u5230\u5b9e\u9a8c\u6587\u4ef6\u5939\u5185\uff0c\u64cd\u4f5c\u547d\u4ee4\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=\"266\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-106.png\" alt=\"\" class=\"wp-image-2139\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-106.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-106-300x92.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-106-768x236.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe3<\/figcaption><\/figure>\n\n\n\n<p>4.\u521b\u5efa\u540d\u4e3aMerge\u7684\u7c7b\u6587\u4ef6\uff0c\u4ee3\u7801\u53ef\u4ee5\u4ece\u5b9e\u9a8c\u6307\u5bfc\u4e66\u4e2d\u83b7\u53d6\uff0c\u7f16\u8bd1\u5b8c\u6210\u540e\u5bfc\u51fa\u4e3a\u53ef\u8fd0\u884c\u7684JAR\u6587\u4ef6\uff0c\u5bfc\u51fa\u64cd\u4f5c\u6b65\u9aa4\u5982\u56fe4-\u56fe5\u6240\u793a\uff0c\u5bfc\u51fa\u5b8c\u6210\u540e\uff0c\u4f7f\u7528hadoop\u7684jar\u547d\u4ee4\u8c03\u7528\u76f8\u5e94\u7684jar\u5305\u8fdb\u884c\u6570\u636e\u5904\u7406\uff0c\u547d\u4ee4\u5982\u56fe6\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"568\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-107.png\" alt=\"\" class=\"wp-image-2140\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-107.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-107-300x197.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-107-768x504.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe4<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"411\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-108.png\" alt=\"\" class=\"wp-image-2141\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-108.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-108-300x143.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-108-768x365.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe5<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"23\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-109.png\" alt=\"\" class=\"wp-image-2142\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-109.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-109-300x8.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-109-768x20.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe6<\/figcaption><\/figure>\n\n\n\n<p>5.\u6267\u884c\u5b8c\u6210\u540e\uff0c\u5728hdfs\u4e0a\u4f7f\u7528cat\u547d\u4ee4\u56de\u663e\u8f93\u51fa\u7ed3\u679c\u7684\u6587\u4ef6\u5939\uff0c\u663e\u793a\u5df2\u7ecf\u6210\u529f\u53bb\u9664\u4e86\u91cd\u590d\u7684\u6570\u636e\u9879\uff0c\u5982\u56fe7\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"451\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-110.png\" alt=\"\" class=\"wp-image-2143\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-110.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-110-300x156.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-110-768x400.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe7<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">6.\u63a5\u4e0b\u6765\u7684\u5185\u5bb9\u4e3aJava API\u7f16\u7a0b\u5b9e\u73b0\u5bf9\u8f93\u5165\u6587\u4ef6\u7684\u6392\u5e8f\u3002<\/h2>\n\n\n\n<p>7.\u5728\u5bb6\u76ee\u5f55\u4e0b\u521b\u5efa\u4e09\u4e2a\u8f93\u5165\u6e90\u6587\u4ef6\uff0c\u8fd9\u91cc\u4ee5ch703.txt\u3001ch704.txt\u3001ch705.txt\u4e3a\u4f8b\u5b50\u547d\u540d\uff0c\u4e09\u4e2a\u6587\u4ef6\u5185\u5bb9\u53ef\u4ee5\u5728\u5b9e\u9a8c\u6307\u5bfc\u4e66\u4e2d\u83b7\u53d6\uff0c\u4e5f\u53ef\u4ee5\u81ea\u5df1\u81ea\u5b9a\u4e49\u6587\u672c\u5185\u5bb9\uff0c\u4ece\u5b9e\u9a8c\u6307\u5bfc\u4e66\u83b7\u53d6\u7684\u6587\u672c\u5982\u56fe8\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"812\" height=\"478\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-111.png\" alt=\"\" class=\"wp-image-2144\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-111.png 812w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-111-300x177.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-111-768x452.png 768w\" sizes=\"auto, (max-width: 812px) 100vw, 812px\" \/><figcaption class=\"wp-element-caption\">\u56fe8<\/figcaption><\/figure>\n\n\n\n<p>8.\u521b\u5efa\u540d\u4e3aMergeSort\u7684\u7c7b\u6587\u4ef6\uff0c\u5982\u56fe9\u6240\u793a\uff1b\u4ee3\u7801\u53ef\u4ee5\u4ece\u5b9e\u9a8c\u6307\u5bfc\u4e66\u4e2d\u83b7\u53d6\uff0c\u7f16\u8bd1\u5b8c\u6210\u540e\u5bfc\u51fa\u4e3a\u53ef\u8fd0\u884c\u7684JAR\u6587\u4ef6\uff0c\u5bfc\u51fa\u64cd\u4f5c\u6b65\u9aa4\u53ef\u53c2\u8003\u56fe4-\u56fe5\u7684\u5185\u5bb9\uff0c\u5bfc\u51fa\u7ed3\u679c\u754c\u9762\u5982\u56fe10\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"636\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-112.png\" alt=\"\" class=\"wp-image-2145\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-112.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-112-300x221.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-112-768x565.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe9<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"657\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-113.png\" alt=\"\" class=\"wp-image-2146\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-113.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-113-300x228.png 300w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-113-768x583.png 768w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" \/><figcaption class=\"wp-element-caption\">\u56fe10<\/figcaption><\/figure>\n\n\n\n<p>9. \u5728hdfs\u4e0a\u521b\u5efa\u672c\u4f8b\u5b9e\u9a8c\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5c06\u4e09\u4e2a\u6587\u4ef6\u4e0a\u4f20\u5230\u5b9e\u9a8c\u6587\u4ef6\u5939\u5185\uff0c\u64cd\u4f5c\u547d\u4ee4\u5982\u56fe11\u6240\u793a\uff1b\u5bfc\u51fa\u5b8c\u6210\u540e\uff0c\u4f7f\u7528hadoop\u7684jar\u547d\u4ee4\u8c03\u7528\u76f8\u5e94\u7684jar\u5305\u8fdb\u884c\u6570\u636e\u5904\u7406\uff0c\u547d\u4ee4\u5982\u56fe12\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"865\" height=\"337\" src=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-114.png\" alt=\"\" class=\"wp-image-2147\" srcset=\"https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-114.png 865w, https:\/\/www.leexinghai.com\/aic\/wp-content\/uploads\/2023\/04\/image-114-300x117.png 300w, 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