{"id":298371,"date":"2024-05-20T16:51:32","date_gmt":"2024-05-20T08:51:32","guid":{"rendered":""},"modified":"2024-05-20T16:51:37","modified_gmt":"2024-05-20T08:51:37","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e6%97%a0%e6%b3%95%e6%89%a7%e8%a1%8chadoop%e7%9a%84example","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/298371.html","title":{"rendered":"\u4e3a\u4ec0\u4e48\u65e0\u6cd5\u6267\u884chadoop\u7684example"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27150255\/c56a0fcf-9790-4cf2-9024-35b36348c352.webp\" alt=\"\u4e3a\u4ec0\u4e48\u65e0\u6cd5\u6267\u884chadoop\u7684example\" \/><\/p>\n<p><p>\u65e0\u6cd5\u6267\u884cHadoop\u7684example\u6570\u4e2a\u539f\u56e0\uff0c\u5176\u4e2d\u5305\u62ec<strong>\u73af\u5883\u914d\u7f6e\u4e0d\u6b63\u786e<\/strong>\u3001<strong>\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898<\/strong>\u3001<strong>Hadoop\u670d\u52a1\u672a\u6b63\u5e38\u542f\u52a8<\/strong>\u3001<strong>\u6743\u9650\u8bbe\u7f6e\u9519\u8bef<\/strong>\u3002\u5728\u8fd9\u4e9b\u539f\u56e0\u4e2d\uff0c<strong>\u73af\u5883\u914d\u7f6e\u4e0d\u6b63\u786e<\/strong>\u662f\u6700\u5e38\u89c1\u7684\u95ee\u9898\u4e4b\u4e00\u3002\u5f53Hadoop\u7684\u73af\u5883\u914d\u7f6e\u51fa\u73b0\u9519\u8bef\u65f6\uff08\u4f8b\u5982JAVA_HOME\u672a\u6b63\u786e\u8bbe\u7f6e\u3001Hadoop\u914d\u7f6e\u6587\u4ef6\u5982core-site.xml\u3001hdfs-site.xml\u8bbe\u7f6e\u4e0d\u5f53\uff09\uff0c\u5c06\u76f4\u63a5\u5f71\u54cd\u5230Hadoop\u7684\u8fd0\u884c\u3002\u8fd9\u4e9b\u914d\u7f6e\u6587\u4ef6\u8d1f\u8d23\u6307\u5b9aHadoop\u8fd0\u884c\u7684\u57fa\u672c\u73af\u5883\u548c\u8282\u70b9\u95f4\u7684\u901a\u4fe1\u65b9\u5f0f\uff0c\u4e00\u65e6\u914d\u7f6e\u4e0d\u5f53\uff0c\u5c06\u5bfc\u81f4Hadoop\u65e0\u6cd5\u6b63\u5e38\u8bc6\u522b\u96c6\u7fa4\u7684\u8fd0\u884c\u73af\u5883\uff0c\u8fdb\u800c\u5f71\u54cdexample\u7684\u6267\u884c\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u73af\u5883\u914d\u7f6e\u4e0d\u6b63\u786e<\/h3>\n<\/p>\n<p><p>\u5728\u90e8\u7f72Hadoop\u65f6\uff0c\u6b63\u786e\u7684\u73af\u5883\u914d\u7f6e\u662f\u81f3\u5173\u91cd\u8981\u7684\u4e00\u6b65\u3002\u8fd9\u5305\u62ec\u786e\u4fdd\u6240\u6709\u76f8\u5173\u7684\u73af\u5883\u53d8\u91cf\uff08\u5982JAVA_HOME\uff09\u6b63\u786e\u65e0\u8bef\u5730\u6307\u5411\u4e86\u6b63\u786e\u7684\u4f4d\u7f6e\uff0c\u548c\u786e\u4fddHadoop\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u5982core-site.xml, hdfs-site.xml, mapred-site.xml\uff09\u51c6\u786e\u53cd\u6620\u4e86\u96c6\u7fa4\u7684\u914d\u7f6e\u3002\u5982\u679c\u8fd9\u4e9b\u8bbe\u7f6e\u9519\u8bef\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4Hadoop\u65e0\u6cd5\u6b63\u786e\u5730\u542f\u52a8\u6216\u8fd0\u884c\u3002<\/p>\n<\/p>\n<p><p>\u7279\u522b\u662f\u5bf9\u4e8eJAVA_HOME\u7684\u8bbe\u7f6e\uff0c\u7531\u4e8eHadoop\u662f\u7528Java\u7f16\u5199\u7684\uff0c\u5b83\u4f9d\u8d56\u4e8eJava\u73af\u5883\u6765\u8fd0\u884c\u3002\u5982\u679c\u7cfb\u7edf\u672a\u80fd\u6b63\u786e\u8bc6\u522bJAVA_HOME\uff0cHadoop\u7684\u8bb8\u591a\u7ec4\u4ef6\u5c06\u65e0\u6cd5\u542f\u52a8\u3002\u6b64\u5916\uff0c\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u53c2\u6570\u9700\u8981\u4e0e\u5b9e\u9645\u7684\u96c6\u7fa4\u8bbe\u7f6e\u76f8\u5339\u914d\u3002\u4f8b\u5982\uff0ccore-site.xml\u6587\u4ef6\u4e2d\u7684<code>fs.defaultFS<\/code>\u53c2\u6570\u9700\u8981\u8bbe\u7f6e\u4e3aNameNode\u7684URI\uff0c\u5982\u679c\u914d\u7f6e\u4e0d\u5f53\uff0c\u5ba2\u6237\u7aef\u7a0b\u5e8f\u53ef\u80fd\u65e0\u6cd5\u4e0eHDFS\u901a\u4fe1\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898<\/h3>\n<\/p>\n<p><p>Hadoop\u7ecf\u5386\u4e86\u591a\u4e2a\u7248\u672c\u7684\u8fed\u4ee3\uff0c\u4e0d\u540c\u7248\u672c\u4e4b\u95f4\u53ef\u80fd\u5b58\u5728\u517c\u5bb9\u6027\u95ee\u9898\u3002\u8fd9\u5305\u62ec\u4e0eJava\u7248\u672c\u7684\u517c\u5bb9\u95ee\u9898\u3001\u5185\u90e8API\u7684\u53d8\u66f4\uff0c\u4ee5\u53ca\u5bf9\u65e7\u7248\u672c\u6570\u636e\u683c\u5f0f\u7684\u652f\u6301\u7b49\u3002\u4f8b\u5982\uff0c\u65b0\u7248\u672c\u7684Hadoop\u53ef\u80fd\u4e0d\u518d\u652f\u6301\u65e7\u7248\u672c\u7684\u67d0\u4e9bAPI\u8c03\u7528\uff0c\u6216\u8005\u5bf9Java\u7684\u7248\u672c\u8981\u6c42\u66f4\u9ad8\u3002\u5982\u679c\u5728\u6267\u884cexample\u65f6\u4f7f\u7528\u7684Hadoop\u7248\u672c\u4e0e\u5176\u4f9d\u8d56\u7684Java\u7248\u672c\u6216\u8005\u5176\u4ed6\u5e93\u7248\u672c\u4e0d\u517c\u5bb9\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><p>\u786e\u4fdd\u6240\u6709\u7ec4\u4ef6\u7684\u7248\u672c\u5339\u914d\u662f\u907f\u514d\u517c\u5bb9\u6027\u95ee\u9898\u7684\u5173\u952e\u3002\u8fd9\u5305\u542b\u5bf9Java\u73af\u5883\u7684\u68c0\u67e5\uff0c\u786e\u4fddJava\u7248\u672c\u6ee1\u8db3Hadoop\u8981\u6c42\uff0c\u540c\u65f6\u4e5f\u9700\u8981\u68c0\u67e5Hadoop\u4f9d\u8d56\u7684\u5176\u4ed6\u5e93\u662f\u5426\u4e0eHadoop\u7248\u672c\u76f8\u517c\u5bb9\u3002\u8fdb\u884c\u517c\u5bb9\u6027\u68c0\u67e5\u53ef\u4ee5\u5229\u7528Hadoop\u5b98\u7f51\u63d0\u4f9b\u7684\u6587\u6863\u6765\u786e\u8ba4\u517c\u5bb9\u7684\u7248\u672c\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001Hadoop\u670d\u52a1\u672a\u6b63\u5e38\u542f\u52a8<\/h3>\n<\/p>\n<p><p>Hadoop\u7684\u8fd0\u884c\u9700\u8981\u591a\u4e2a\u670d\u52a1\u6b63\u5e38\u542f\u52a8\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8eNameNode\u3001DataNode\u3001ResourceManager\u3001NodeManager\u7b49\u3002\u5982\u679c\u8fd9\u4e9b\u670d\u52a1\u6ca1\u6709\u88ab\u6b63\u786e\u542f\u52a8\uff0c\u5c1d\u8bd5\u6267\u884cexample\u65f6\u5c31\u4f1a\u5931\u8d25\u3002\u4f8b\u5982\uff0c\u5982\u679cNameNode\u6ca1\u6709\u542f\u52a8\uff0c\u6574\u4e2aHDFS\u5c06\u4e0d\u53ef\u7528\uff0c\u5bfc\u81f4\u65e0\u6cd5\u5b58\u53d6\u6570\u636e\u3002<\/p>\n<\/p>\n<p><p>\u68c0\u67e5Hadoop\u670d\u52a1\u72b6\u6001\u662f\u786e\u5b9a\u670d\u52a1\u662f\u5426\u6b63\u5e38\u542f\u52a8\u7684\u6709\u6548\u65b9\u6cd5\u3002\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u5982<code>jps<\/code>\u547d\u4ee4\uff0c\u6765\u67e5\u770b\u8fd9\u4e9b\u5173\u952e\u670d\u52a1\u7684\u8fdb\u7a0b\u662f\u5426\u5728\u8fd0\u884c\u3002\u6b64\u5916\uff0cHadoop\u4e5f\u63d0\u4f9b\u4e86Web\u754c\u9762\uff0c\u4f8b\u5982HDFS\u7684Web UI\u548cYARN\u7684ResourceManager Web UI\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e9bWeb\u754c\u9762\u6765\u68c0\u67e5\u96c6\u7fa4\u7684\u72b6\u6001\u548c\u670d\u52a1\u7684\u5065\u5eb7\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u6743\u9650\u8bbe\u7f6e\u9519\u8bef<\/h3>\n<\/p>\n<p><p>\u5728Hadoop\u96c6\u7fa4\u4e2d\uff0c\u6b63\u786e\u7684\u6743\u9650\u8bbe\u7f6e\u5bf9\u4e8e\u4fdd\u8bc1\u6570\u636e\u7684\u5b89\u5168\u548c\u8bbf\u95ee\u63a7\u5236\u975e\u5e38\u91cd\u8981\u3002\u5982\u679c\u6267\u884cexample\u65f6\u4f7f\u7528\u7684\u7528\u6237\u6ca1\u6709\u8db3\u591f\u7684\u6743\u9650\u8bbf\u95eeHadoop\u7684\u76f8\u5e94\u7ec4\u4ef6\uff0c\u6bd4\u5982HDFS\u4e0a\u7684\u6570\u636e\u6216YARN\u7684\u8d44\u6e90\uff0c\u5c06\u65e0\u6cd5\u6210\u529f\u6267\u884c\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u6743\u9650\u62d2\u7edd\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><p>\u89e3\u51b3\u6743\u9650\u95ee\u9898\u901a\u5e38\u9700\u8981\u7ba1\u7406\u5458\u6839\u636eHadoop\u96c6\u7fa4\u7684\u5b89\u5168\u7b56\u7565\uff0c\u8c03\u6574\u6587\u4ef6\u7cfb\u7edf\u7684\u6743\u9650\u6216\u8005\u4fee\u6539YARN\u961f\u5217\u7684\u8bbf\u95ee\u63a7\u5236\u3002\u5728HDFS\u4e0a\uff0c\u53ef\u4ee5\u901a\u8fc7<code>hdfs dfs -chmod<\/code>\u547d\u4ee4\u6765\u4fee\u6539\u6587\u4ef6\u6216\u76ee\u5f55\u7684\u6743\u9650\uff0c\u800cYARN\u7684\u8bbf\u95ee\u63a7\u5236\u4e00\u822c\u901a\u8fc7<a href=\"https:\/\/docs.pingcode.com\/blog\/project-management\/58557.html\" target=\"_blank\">\u8d44\u6e90\u7ba1\u7406<\/a>\u5668\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u5982capacity-scheduler.xml\uff09\u6765\u8c03\u6574\u3002<\/p>\n<\/p>\n<p><p>\u7efc\u4e0a\u6240\u8ff0\uff0c\u65e0\u6cd5\u6267\u884cHadoop\u7684example\u7684\u539f\u56e0\u591a\u79cd\u591a\u6837\uff0c\u6d89\u53ca\u5230\u73af\u5883\u914d\u7f6e\u3001\u7248\u672c\u517c\u5bb9\u6027\u3001\u670d\u52a1\u72b6\u6001\u548c\u6743\u9650\u8bbe\u7f6e\u7b49\u591a\u4e2a\u65b9\u9762\u3002\u8bca\u65ad\u548c\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u9700\u8981\u5bf9Hadoop\u7684\u5de5\u4f5c\u673a\u5236\u6709\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u91c7\u53d6\u76f8\u5e94\u7684\u89e3\u51b3\u63aa\u65bd\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u4e3a\u4ec0\u4e48\u65e0\u6cd5\u8fd0\u884chadoop\u7684\u793a\u4f8b\u7a0b\u5e8f\uff1f<\/strong><\/p>\n<ul>\n<li><strong>\u7f3a\u5c11\u8fd0\u884chadoop\u793a\u4f8b\u7a0b\u5e8f\u7684\u73af\u5883\u914d\u7f6e\u3002<\/strong> \u5728\u6267\u884chadoop\u7684\u793a\u4f8b\u7a0b\u5e8f\u4e4b\u524d\uff0c\u9700\u8981\u6b63\u786e\u914d\u7f6ehadoop\u7684\u8fd0\u884c\u73af\u5883\uff0c\u5305\u62ec\u8bbe\u7f6ehadoop\u7684\u8def\u5f84\u3001\u914d\u7f6ehadoop\u7684\u76f8\u5173\u914d\u7f6e\u6587\u4ef6\u7b49\u3002\u5982\u679c\u73af\u5883\u914d\u7f6e\u4e0d\u6b63\u786e\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u6267\u884chadoop\u7684\u793a\u4f8b\u7a0b\u5e8f\u3002<\/li>\n<li><strong>\u793a\u4f8b\u7a0b\u5e8f\u6240\u9700\u7684\u8f93\u5165\u6570\u636e\u672a\u6b63\u786e\u51c6\u5907\u3002<\/strong> \u6709\u4e9bhadoop\u793a\u4f8b\u7a0b\u5e8f\u9700\u8981\u9884\u5148\u51c6\u5907\u8f93\u5165\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u6b63\u786e\u51c6\u5907\u8f93\u5165\u6570\u636e\uff0c\u7a0b\u5e8f\u53ef\u80fd\u65e0\u6cd5\u6267\u884c\u3002\u8bf7\u786e\u4fdd\u8f93\u5165\u6570\u636e\u7684\u4f4d\u7f6e\u548c\u683c\u5f0f\u4e0e\u793a\u4f8b\u7a0b\u5e8f\u7684\u8981\u6c42\u76f8\u7b26\u3002<\/li>\n<li><strong>\u6267\u884chadoop\u793a\u4f8b\u7a0b\u5e8f\u7684\u6743\u9650\u4e0d\u8db3\u3002<\/strong> 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\u5982\u679c\u793a\u4f8b\u7a0b\u5e8f\u7684\u8f93\u5165\u6570\u636e\u91cf\u8fc7\u5927\uff0c\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u7684\u8fd0\u884c\u65f6\u95f4\u53d8\u957f\u3002\u53ef\u4ee5\u8003\u8651\u901a\u8fc7\u51cf\u5c11\u8f93\u5165\u6570\u636e\u7684\u89c4\u6a21\u6216\u4f18\u5316\u7a0b\u5e8f\u7b97\u6cd5\u6765\u63d0\u9ad8\u8fd0\u884c\u901f\u5ea6\u3002<\/li>\n<li><strong>\u786c\u4ef6\u8d44\u6e90\u4e0d\u8db3\u3002<\/strong> \u5982\u679c\u8fd0\u884chadoop\u793a\u4f8b\u7a0b\u5e8f\u7684\u8ba1\u7b97\u8282\u70b9\u7684\u786c\u4ef6\u8d44\u6e90\u4e0d\u8db3\uff0c\u4f8b\u5982\u5185\u5b58\u4e0d\u8db3\u6216cpu\u6027\u80fd\u8f83\u4f4e\u7b49\uff0c\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u901f\u5ea6\u8f83\u6162\u3002\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u8ba1\u7b97\u8282\u70b9\u7684\u6570\u91cf\u6216\u63d0\u5347\u786c\u4ef6\u914d\u7f6e\u6765\u63d0\u9ad8\u8fd0\u884c\u901f\u5ea6\u3002<\/li>\n<li><strong>\u7f51\u7edc\u5ef6\u8fdf\u95ee\u9898\u3002<\/strong> 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