{"id":166479,"date":"2024-11-05T16:27:19","date_gmt":"2024-11-05T08:27:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166479\/"},"modified":"2024-11-05T16:27:20","modified_gmt":"2024-11-05T08:27:20","slug":"%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%ef%bc%9a%e5%a6%82%e4%bd%95%e5%9c%a8-hive-%e4%b8%ad%e5%8a%a0%e8%bc%89%e6%96%87%e4%bb%b6%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-hive-%e5%8a%a0%e8%bc%89%e6%96%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166479\/","title":{"rendered":"\u5feb\u901f\u5165\u9580\uff1a\u5982\u4f55\u5728 Hive \u4e2d\u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab (hive \u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%ef%bc%9a%e5%a6%82%e4%bd%95%e5%9c%a8-hive-%e4%b8%ad%e5%8a%a0%e8%bc%89%e6%96%87%e4%bb%b6%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-WxYGigHvkv\">\u5feb\u901f\u5165\u9580\uff1a\u5982\u4f55\u5728 Hive \u4e2d\u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab<\/h1>\n<p>Apache Hive \u662f\u4e00\u500b\u57fa\u65bc Hadoop \u7684\u6578\u64da\u5009\u5eab\u5de5\u5177\uff0c\u4e3b\u8981\u7528\u65bc\u6578\u64da\u7684\u67e5\u8a62\u548c\u5206\u6790\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7a2e\u985e\u4f3c SQL \u7684\u67e5\u8a62\u8a9e\u8a00\uff0c\u7a31\u70ba HiveQL\uff0c\u8b93\u7528\u6236\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u5c07\u5916\u90e8\u6587\u4ef6\u52a0\u8f09\u5230 Hive \u6578\u64da\u5eab\u4e2d\u662f\u6578\u64da\u8655\u7406\u7684\u7b2c\u4e00\u6b65\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 Hive \u4e2d\u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%ba%96%e5%82%99%e5%b7%a5%e4%bd%9c-WxYGigHvkv\">\u6e96\u5099\u5de5\u4f5c<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86 Hadoop \u548c Hive\uff0c\u4e26\u4e14\u80fd\u5920\u8a2a\u554f Hive \u7684\u547d\u4ee4\u884c\u754c\u9762\u3002\u60a8\u9084\u9700\u8981\u4e00\u500b\u5b58\u5132\u6578\u64da\u7684\u6587\u4ef6\uff0c\u901a\u5e38\u662f CSV\u3001JSON \u6216 Parquet \u683c\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6e96\u5099\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u5b89\u88dd Hadoop \u548c Hive\u3002<\/li>\n<li>\u555f\u52d5 Hadoop \u548c Hive \u670d\u52d9\u3002<\/li>\n<li>\u6e96\u5099\u8981\u52a0\u8f09\u7684\u6578\u64da\u6587\u4ef6\uff0c\u4e26\u5c07\u5176\u4e0a\u50b3\u5230 HDFS\uff08Hadoop \u5206\u4f48\u5f0f\u6587\u4ef6\u7cfb\u7d71\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b0%87%e6%96%87%e4%bb%b6%e4%b8%8a%e5%82%b3%e5%88%b0-hdfs-WxYGigHvkv\">\u5c07\u6587\u4ef6\u4e0a\u50b3\u5230 HDFS<\/h2>\n<p>\u5728\u5c07\u6587\u4ef6\u52a0\u8f09\u5230 Hive \u6578\u64da\u5eab\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5c07\u5176\u4e0a\u50b3\u5230 HDFS\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c07\u672c\u5730\u6587\u4ef6\u4e0a\u50b3\u5230 HDFS\uff1a<\/p>\n<pre><code>hadoop fs -put \/path\/to\/local\/file \/path\/to\/hdfs\/directory<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba <code>data.csv<\/code> \u7684\u6587\u4ef6\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c07\u5176\u4e0a\u50b3\uff1a<\/p>\n<pre><code>hadoop fs -put data.csv \/user\/hive\/warehouse\/<\/code><\/pre>\n<h2 id=\"%e5%89%b5%e5%bb%ba-hive-%e8%a1%a8-WxYGigHvkv\">\u5275\u5efa Hive \u8868<\/h2>\n<p>\u5728\u52a0\u8f09\u6578\u64da\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5728 Hive \u4e2d\u5275\u5efa\u4e00\u500b\u8868\u3002\u9019\u500b\u8868\u7684\u7d50\u69cb\u61c9\u8a72\u8207\u60a8\u8981\u52a0\u8f09\u7684\u6578\u64da\u6587\u4ef6\u7684\u7d50\u69cb\u76f8\u5339\u914d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE IF NOT EXISTS my_table (\n    id INT,\n    name STRING,\n    age INT\n) ROW FORMAT DELIMITED\nFIELDS TERMINATED BY ','\nSTORED AS TEXTFILE;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>my_table<\/code> \u7684\u8868\uff0c\u5305\u542b\u4e09\u500b\u5b57\u6bb5\uff1a<code>id<\/code>\u3001<code>name<\/code> \u548c <code>age<\/code>\u3002<\/p>\n<h2 id=\"%e5%8a%a0%e8%bc%89%e6%95%b8%e6%93%9a%e5%88%b0-hive-%e8%a1%a8-WxYGigHvkv\">\u52a0\u8f09\u6578\u64da\u5230 Hive \u8868<\/h2>\n<p>\u4e00\u65e6\u8868\u5275\u5efa\u5b8c\u6210\uff0c\u60a8\u5c31\u53ef\u4ee5\u5c07\u6578\u64da\u5f9e HDFS \u52a0\u8f09\u5230 Hive \u8868\u4e2d\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u52a0\u8f09\u6578\u64da\uff1a<\/p>\n<pre><code>LOAD DATA INPATH '\/user\/hive\/warehouse\/data.csv' INTO TABLE my_table;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07 <code>data.csv<\/code> \u6587\u4ef6\u4e2d\u7684\u6578\u64da\u52a0\u8f09\u5230 <code>my_table<\/code> \u8868\u4e2d\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-WxYGigHvkv\">\u67e5\u8a62\u6578\u64da<\/h2>\n<p>\u6578\u64da\u52a0\u8f09\u5b8c\u6210\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 HiveQL \u67e5\u8a62\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM my_table;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u8fd4\u56de <code>my_table<\/code> \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WxYGigHvkv\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86\u5982\u4f55\u5728 Hive \u4e2d\u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff0c\u5305\u62ec\u4e0a\u50b3\u6587\u4ef6\u5230 HDFS\u3001\u5275\u5efa Hive \u8868\u4ee5\u53ca\u52a0\u8f09\u6578\u64da\u3002\u9019\u4e9b\u6b65\u9a5f\u5c0d\u65bc\u6578\u64da\u5206\u6790\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u5229\u7528 Hive \u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u4f86\u904b\u884c\u60a8\u7684 Hadoop \u548c Hive \u74b0\u5883\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u670d\u52d9\u3002\u6211\u5011\u63d0\u4f9b\u9ad8\u6548\u80fd\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u5165\u9580\u6307\u5357\uff0c\u6559\u4f60\u5982\u4f55\u5728 Hive \u4e2d\u8f15\u9b06\u52a0\u8f09\u6587\u4ef6\u5230\u6578\u64da\u5eab\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-166479","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=166479"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166479\/revisions"}],"predecessor-version":[{"id":166480,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166479\/revisions\/166480"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}