{"id":47577,"date":"2023-12-11T15:12:17","date_gmt":"2023-12-11T07:12:17","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=47577"},"modified":"2023-12-11T15:12:17","modified_gmt":"2023-12-11T07:12:17","slug":"sqoop%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f-4","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/sqoop%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f-4\/","title":{"rendered":"Sqoop\u5de5\u4f5c\u539f\u7406\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>&#8220;`&#8221;<\/p>\n<p> hadoop\u751f\u6001\u5708\u4e0a\u7684\u6570\u636e\u4f20\u8f93\u5de5\u5177\u3002<br \/>\n \u53ef\u4ee5\u5c06\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u6570\u636e\u5bfc\u5165\u975e\u7ed3\u6784\u5316\u7684hdfs\u3001hive\u6216\u8005bbase\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u5c06hdfs\u4e2d\u7684\u6570\u636e\u5bfc\u51fa\u5230\u5173\u7cfb\u578b\u6570\u636e\u5e93\u6216\u8005\u6587\u672c\u6587\u4ef6\u4e2d\u3002<br \/>\n \u4f7f\u7528\u7684\u662fmr\u7a0b\u5e8f\u6765\u6267\u884c\u4efb\u52a1\uff0c\u4f7f\u7528jdbc\u548c\u5173\u7cfb\u578b\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<br \/>\n import\u539f\u7406\uff1a\u901a\u8fc7\u6307\u5b9a\u7684\u5206\u9694\u7b26\u8fdb\u884c\u6570\u636e\u5207\u5206\uff0c\u5c06\u5206\u7247\u4f20\u5165\u5404\u4e2amap\u4e2d\uff0c\u5728map\u4efb\u52a1\u4e2d\u5728\u6bcf\u884c\u6570\u636e\u8fdb\u884c\u5199\u5165\u5904\u7406\u6ca1\u6709reduce\u3002<br \/>\n export\u539f\u7406\uff1a\u6839\u636e\u8981\u64cd\u4f5c\u7684\u8868\u540d\u751f\u6210\u4e00\u4e2ajava\u7c7b\uff0c\u5e76\u8bfb\u53d6\u5176\u5143\u6570\u636e\u4fe1\u606f\u548c\u5206\u9694\u7b26\u5bf9\u975e\u7ed3\u6784\u5316\u7684\u6570\u636e\u8fdb\u884c\u5339\u914d\uff0c\u591a\u4e2amap\u4f5c\u4e1a\u540c\u65f6\u6267\u884c\u5199\u5165\u5173\u7cfb\u578b\u6570\u636e\u5e93<\/p>\n<p>&lt;pre&gt;&lt;code&gt;            &quot;&#8220;`<br \/>\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;`&#8221; hadoop\u751f\u6001\u5708\u4e0a\u7684\u6570\u636e\u4f20\u8f93\u5de5\u5177\u3002 \u53ef\u4ee5\u5c06\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u6570\u636e\u5bfc\u5165\u975e\u7ed3\u6784\u5316\u7684h [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-47577","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=47577"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47577\/revisions"}],"predecessor-version":[{"id":47578,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47577\/revisions\/47578"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=47577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=47577"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=47577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}