{"id":31383,"date":"2023-05-23T11:02:06","date_gmt":"2023-05-23T03:02:06","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=31383"},"modified":"2023-07-31T00:07:29","modified_gmt":"2023-07-30T16:07:29","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e8%af%b4hadoop%e6%89%a9%e5%b1%95%e6%80%a7%e4%bc%98%e4%ba%8empp%e6%9e%b6%e6%9e%84%e7%9a%84%e5%85%b3%e7%b3%bb%e5%9e%8b%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/31383.html","title":{"rendered":"\u4e3a\u4ec0\u4e48\u8bf4HADOOP\u6269\u5c55\u6027\u4f18\u4e8eMPP\u67b6\u6784\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>hadoop(hive)\u8ddfmpp\u7684\u672c\u8d28\u533a\u522b\u662f\u4ec0\u4e48\uff0c\u8fd9\u4e2a\u6709\u7684\u65f6\u5019\u754c\u9650\u5f88\u6a21\u7cca\uff0c\u6bd4\u5982\u8bf4\u5b58\u50a8\uff0c\u5982\u679c\u6211\u628a\uff4d\uff50\uff50\u7684\u5b58\u50a8\u67b6\u5728hdfs\u4e0a\uff0c\u90a3\u5b58\u50a8\u6a21\u578b\u5c31\u6ca1\u6709\u533a\u522b\u4e86\uff0c\u6240\u4ee5\u5730\u4e0b\u6211\u6253\u7b97\u8fd8\u662f\u7528\u6bd4\u8f83\u4f20\u7edf\u7684\u8ba4\u77e5\u6765\u4f5c\u533a\u522b\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-31384\" decoding=\"async\" height=\"421\" sizes=\"(max-width: 680px) 100vw, 680px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-17-10.png?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-17-10.png?x-oss-process=image\/auto-orient,1\/format,webp 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-17-10-300x186.png 300w\" width=\"680\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><strong>\u4e00\u3001\u4e3a\u4ec0\u4e48\u8bf4HADOOP\u6269\u5c55\u6027\u4f18\u4e8eMPP\u67b6\u6784\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93<\/strong><\/h2>\n<p>1. hadoop(hive)\u8ddfmpp\u7684\u672c\u8d28\u533a\u522b\u662f\u4ec0\u4e48\uff0c\u8fd9\u4e2a\u6709\u7684\u65f6\u5019\u754c\u9650\u5f88\u6a21\u7cca\uff0c\u6bd4\u5982\u8bf4\u5b58\u50a8\uff0c\u5982\u679c\u6211\u628a\uff4d\uff50\uff50\u7684\u5b58\u50a8\u67b6\u5728hdfs\u4e0a\uff0c\u90a3\u5b58\u50a8\u6a21\u578b\u5c31\u6ca1\u6709\u533a\u522b\u4e86\uff0c\u6240\u4ee5\u5730\u4e0b\u6211\u6253\u7b97\u8fd8\u662f\u7528\u6bd4\u8f83\u4f20\u7edf\u7684\u8ba4\u77e5\u6765\u4f5c\u533a\u522b\u3002<\/p>\n<p>2. hive\u8ddfmpp\u7684\u5b58\u50a8\u6a21\u578b\u4e0d\u4e00\u6837\uff0chive\u7528\u7684hdfs\uff0c\u800cmpp\u9700\u8981\u81ea\u5df1\u505a\u5207\u5206\uff0c\u81ea\u5df1\u505a\u5207\u5206\u5c31\u5e26\u6765\u52a8\u6001\u8c03\u6574\u7684\u95ee\u9898\uff0chdfs\u7684\u6269\u5c55\u662f\u901a\u8fc7\u5143\u6570\u636e\u6765\u505a\u7684\uff0c\u4ed6\u6709\u4e2d\u5fc3\u8282\u70b9\u7528\u6765\u5b58\u5143\u6570\u636e\uff0c\u5728\u52a0\u5165\u65b0\u7684\u8282\u70b9\u7684\u65f6\u5019\uff0c\u53ea\u9700\u8981\u4fee\u6539\u5143\u6570\u636e\u5c31\u53ef\u4ee5\u4e86\uff0c\u6240\u4ee5hdfs\u7684\u6269\u5c55\u80fd\u529b\u662f\u53d7\u5230\u7ba1\u7406\u5143\u6570\u636e\u90a3\u53f0\u673a\u5668\u7684\u6027\u80fd\u9650\u5236\u7684\uff0c\u4e00\u822c\u6765\u8bf4\u53ef\u4ee5\u523010k\u8fd9\u4e2a\u89c4\u6a21\uff0c\u518d\u5411\u4e0a\u5c31\u4e0d\u884c\u4e86\u3002\u4f46\u662fmpp\u901a\u5e38\u91c7\u7528\u7684\u662f\u6ca1\u6709\u4e2d\u5fc3\u8282\u70b9\u7684\u5b58\u50a8\u6a21\u578b\uff0c\u6bd4\u5982hash\uff0c\u4f60\u6bcf\u6b21\u589e\u52a0\u8282\u70b9\u7684\u65f6\u5019\uff0c\u90fd\u9700\u8981rehash\uff0c\u8fd9\u6837\u5f53\u89c4\u6a21\u5230\u4e86\u51e0\u767e\u53f0\u7684\u65f6\u5019\uff0c\u6269\u5c55\u80fd\u529b\u5c31\u4e0b\u6765\u4e86\u3002\u5f53\u7136\uff0c\u73b0\u5728\u53ef\u4ee5\u628a\u5b58\u50a8\u67b6\u5728hdfs\u4e0a\uff0c\u8fd9\u6837\u5728\u5b58\u50a8\u4e0a\u5c31\u6ca1\u6709\u592a\u5927\u533a\u522b\u4e86\u3002<\/p>\n<p>3. hive\u8ddfmpp\u7684\u5185\u5b58\u7ba1\u7406\u65b9\u5f0f\u4e0d\u5927\u4e00\u6837\uff0cmpp\u5185\u5b58\u7ba1\u7406\u6bd4\u8f83\u7cbe\u7ec6\uff0c\u4ed6\u4e3b\u8981\u7684\u60f3\u6cd5\u662f\u5728\u6bcf\u4e2a\u673a\u5668\u4e0a\u653e\u4e2a\u6570\u636e\u5e93\uff0c\u4f20\u7edf\u6570\u636e\u5e93\u7684\u5185\u5b58\u7ba1\u7406\u6bd4\u8f83\u590d\u6742\uff0c\u4e3b\u8981\u662f\u5185\u5916\u5b58\u4ea4\u4e92\u7684\u4e1c\u897f\uff0c\u8fd9\u6837\u7684\u67b6\u6784\u51b3\u5b9a\u4e86mpp\u5728\u5c0f\u6570\u636e\u91cf\u7684\u65f6\u5019\uff0clatency\u53ef\u4ee5\u505a\u7684\u6bd4\u8f83\u5c0f\uff0c\u4f46\u662f\u5728\u5927\u6570\u636e\u91cf\u7684\u65f6\u5019\uff0cthroughput\u505a\u4e0d\u4e0a\u53bb\u3002\u800chive\u7684\u5185\u5b58\u7ba1\u7406\u975e\u5e38\u7c97\u653e\uff0c\u4ed6\u540e\u6765\u5c31\u662fmapreduce\u7684job\uff0cmr\u7684job\u662f\u6ca1\u6709\u592a\u591a\u7cbe\u7ec6\u7684\u5185\u5b58\u7ba1\u7406\u7684\uff0c\u4ed6\u5c31\u662f\u62fc\u4e86\u547d\u5730scan\uff0c\u5b8c\u4e86\u9876\u591a\u5c31\u662f\u4e2aspill\uff0c\u8fd9\u6837\u7684\u67b6\u6784\u5bfc\u81f4throughput\u5f88\u5927\uff0c\u4f46\u662flatency\u5f88\u9ad8\uff0c\u5f53\u4f60\u96c6\u7fa4\u89c4\u6a21\u5f88\u5927\u7684\u65f6\u5019\uff0c\u4f60\u4e00\u822c\u4f1a\u8ffd\u6c42\u5f88\u5927\u7684throughput\uff0c\u5f53\u6570\u636e\u91cf\u5f88\u5927\u7684\u65f6\u5019\uff0c\u5982\u679c\u4f60\u7528mpp\u90a3\u79cd\u4f20\u7edf\u7684\u5185\u5b58\u7ba1\u7406\u7684\u8bdd\uff0c\u5927\u6279\u91cf\u7684\u8ba1\u7b97\u53cd\u800c\u4f1a\u6162\uff0c\u800c\u4e14\u66f4\u52a0\u5360\u8d44\u6e90\uff0c\u6240\u4ee5vertica\u8fd9\u79cd\u4e00\u5f00\u59cb\u5c31\u8003\u8651\u4e86\u5217\u5f0f\u5b58\u50a8\u5c31\u662f\u8fd9\u4e2a\u9053\u7406\u3002<\/p>\n<p>4.\u4e8b\u52a1\uff0c\u4f60\u53ef\u4ee5\u8ba4\u4e3ahive\u4e0d\u652f\u6301\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u90a3\u79cd\u9ad8\u5e76\u53d1\u7684\u4e8b\u52a1\uff0c\u800cmpp\u8bd5\u56fe\u60f3\u8981\u652f\u6301\uff0c\u4e00\u65e6\u4f60\u8981\u4e0a\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u57fa\u672c\u4e0a\u4f60\u7684\u53ef\u6269\u5c55\u6027\u5c31\u4e0a\u4e0d\u53bb\u4e86\uff0c\u81f3\u4e8e\u4e3a\u5565\uff0c\u9648\u7693\u6709\u4e00\u7bc7\u6587\u7ae0\u5199\u7684\u4e0d\u9519\uff0c\u5efa\u8bae\u770b\u4e0b\u3002hive\u7684ddl\u662f\u53ef\u4ee5\u591a\u4e2a\u5e76\u53d1\u7684\uff0c\u4f46\u662fdml\u4e0d\u884c\uff0c\u800cddl\u4ed6\u662f\u901a\u8fc7\u4f20\u7edf\u7684\u6570\u636e\u5e93\u53bb\u505a\u7684\uff0c\u6240\u4ee5\u8fd9\u4e2a\u4e5f\u662f\u4e2a\u4e2d\u5fc3\u8282\u70b9\uff0cdml\u4e0d\u884c\u7684\u8bdd\uff0c\u5c31\u51b3\u5b9a\u4e86\u4ed6\u53ef\u4ee5\u5728\u5e95\u5c42\u8dd1mr\u8fd9\u4e48\u91cd\u7c92\u5ea6\u7684\u4e1c\u897f\uff0c\u4ed6\u8dd1\u7684\u65f6\u5019\uff0c\u4f1a\u5728\u6574\u4e2a\u8868\u4e0a\u9762\u52a0\u4e00\u628a\u5927\u9501\u3002<\/p>\n<p>5.failover\u673a\u5236\uff0chive\u7684failover\u5c31\u662fmr\u7684failover\uff0cjob\u6302\u6389\u4e86\u91cd\u65b0\u6362\u673a\u5668\u8dd1\u5c31\u5b8c\u4e86\uff0c\u4f46\u662fmpp\u5982\u679c\u91c7\u7528\u4f20\u7edf\u67b6\u6784\u7684\u8bdd\uff0c\u4ed6\u7684\u8ba1\u7b97\u662f\u8981attach\u5230\u6570\u636e\u8282\u70b9\u4e0a\u53bb\u7684\uff0c\u5982\u679c\u4f60\u89c4\u6a21\u4e0a\u53bb\uff0c\u90a3\u4e48fail\u7684\u53ef\u80fd\u6027\u5c31\u4e0a\u53bb\u4e86\uff0c\u8fd9\u6837\u5982\u679c\u4f60\u6bcf\u6b21\u8ba1\u7b97\u90fd\u6709\u53f0\u673a\u5668\u6302\u4e86\uff0c\u4f60\u4e00\u6302\uff0c\u522b\u4eba\u5c31\u8981\u7b49\u4f60\uff0c\u800c\u4e0d\u662f\u6362\u53f0\u673a\u5668\u7ee7\u7eed\u8dd1\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4e5f\u9650\u5236\u4e86\u53ef\u6269\u5c55\u6027\uff0c\u5f53\u7136\uff0c\u5982\u679cmpp\u5728\u5e95\u5c42\u7528\u4e86\u7edf\u4e00\u7684\u5b58\u50a8\uff0c\u5b8c\u4e86\u8ba1\u7b97\u4e5f\u53ef\u4ee5\u5230\u5904\u8f6c\u79fb\uff0c\u518d\u60f3\u4e2a\u529e\u6cd5\u628a\u4e2d\u95f4\u72b6\u6001\u8bb0\u5f55\u4e0b\u6765\uff0c\u4e5f\u53ef\u4ee5\u6269\u5c55\uff08\u8fd9\u4e2a\u5b9e\u9645\u4e0a\u5c31\u662fsparksql\uff09\u3002<\/p>\n<p><strong>\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n<h2 class=\"wp-block-heading\"><strong>\u4e8c\u3001MongoDB\u662f\u4ec0\u4e48<\/strong><\/h2>\n<p>\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93(nosql ),\u5c5e\u4e8e\u6587\u6863\u578b\u6570\u636e\u5e93\u3002MongoDB\u91c7\u7528\u7c7bJSON\u7684documents\u6765\u5b58\u50a8\u6570\u636e\u3002\u6570\u636e\u7ed3\u6784\u7531\u952e\u503c(key=&gt;value)\u5bf9\u7ec4\u6210\u3002<\/p>\n<p>MongoDB\u91c7\u7528\u52a8\u6001\u6570\u636e\u6a21\u578bschema\uff0c\u8fd9\u610f\u5473\u7740\u4e0d\u9700\u8981\u9884\u5148\u5b9a\u4e49\u8868\u7684\u6570\u636e\u7c7b\u578b\u548c\u5b57\u6bb5\u540d\u3002\u5f53MongoDB\u9700\u8981\u66f4\u65b0\u6587\u6863documents\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u8f7b\u677e\u589e\u52a0\u65b0\u7684\u5b57\u6bb5\u540d\u6216\u8005\u5220\u9664\u65e7\u7684\u5b57\u6bb5\u3002MongoDB\u8ba9\u6570\u636e\u7ed3\u6784\u66f4\u52a0\u5c42\u7ea7\u5316\uff0c\u56e0\u800c\u5b58\u50a8\u6570\u7ec4\u7b49\u590d\u6742\u6570\u636e\u7ed3\u6784\u3002 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[&hellip;]","protected":false},"author":1,"featured_media":31384,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/31383"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=31383"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/31383\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/31384"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=31383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=31383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=31383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}