{"id":131830,"date":"2020-07-05T05:24:55","date_gmt":"2020-07-04T21:24:55","guid":{"rendered":"http:\/\/4563.org\/?p=131830"},"modified":"2020-07-05T05:24:55","modified_gmt":"2020-07-04T21:24:55","slug":"hive-%e5%ad%a6%e4%b9%a0%e4%b9%8b%e8%b7%af%ef%bc%88%e4%b8%80%ef%bc%89%e5%88%9d%e8%af%86","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=131830","title":{"rendered":"hive \u5b66\u4e60\u4e4b\u8def\uff08\u4e00\uff09\u521d\u8bc6"},"content":{"rendered":"<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u662f\u4ec0\u4e48\uff1f\" title=\"Hive \u662f\u4ec0\u4e48\uff1f\"><\/a>Hive \u662f\u4ec0\u4e48\uff1f<\/h3>\n<blockquote>\n<p>\u5b98\u65b9\u89e3\u91ca: Hive \u662f\u57fa\u4e8e Hadoop \u7684\u6570\u636e\u4ed3\u5e93\u89e3\u51b3\u65b9\u6848\u3002\u7531\u4e8e Hadoop \u672c\u8eab\u5728\u6570\u636e\u5b58\u50a8\u548c\u8ba1\u7b97\u65b9\u9762\u6709\u5f88\u597d\u7684\u53ef\u6269\u5c55\u6027\u548c\u9ad8\u5bb9\u9519\u6027\uff0c\u56e0\u6b64\u4f7f\u7528 Hive \u6784\u5efa\u7684\u6570\u636e\u4ed3\u5e93\u4e5f\u79c9\u627f\u4e86\u8fd9\u4e9b\u7279\u6027\u3002<\/p>\n<\/blockquote>\n<p>\u7b80\u5355\u800c\u8a00: <\/p>\n<ul>\n<li>Hive \u6700\u521d\u662f\u7531 Facebook \u8bbe\u8ba1\u7684\uff0c\u662f\u57fa\u4e8e Hadoop \u7684\u4e00\u4e2a\u6570\u636e\u4ed3\u5e93\u5de5\u5177\uff0c<\/li>\n<li>\u53ef\u4ee5\u5c06\u7ed3\u6784\u5316\u7684\u6570\u636e\u6587\u4ef6\u6620\u5c04\u4e3a\u4e00\u5f20\u6570\u636e\u5e93\u8868\uff0c\u5e76\u63d0\u4f9b\u7b80\u5355\u7684\u7c7b SqL \u67e5\u8be2\u8bed\u8a00(Hive SQL)\u3002<\/li>\n<li>\u5e95\u5c42\u6570\u636e\u5b58\u50a8\u5728 HDFS \u4e0a\uff0cHive \u7684\u672c\u8d28\u662f\u5c06 SQL \u8bed\u53e5\u8f6c\u6362\u4e3a MapReduce \u4efb\u52a1\u8fd0\u884c\uff0c<\/li>\n<li>\u4f7f\u4e0d\u719f\u6089 MapReduce \u7684\u7528\u6237\u5f88\u65b9\u4fbf\u5730\u5229\u7528 HQL \u5904\u7406\u548c\u8ba1\u7b97 HDFS \u4e0a\u7684\u7ed3\u6784\u5316\u7684\u6570\u636e\uff0c\u9002\u7528\u4e8e\u79bb\u7ebf\u7684\u6279\u91cf\u6570\u636e\u8ba1\u7b97\u3002<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#HQL-\u662f\u4ec0\u4e48\uff1f\" title=\"HQL \u662f\u4ec0\u4e48\uff1f\"><\/a>HQL \u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>Hive \u63d0\u4f9b\u7684\u67e5\u8be2\u8bed\u8a00\u79f0\u4e3a HQL\uff0c\u4e3a Hive Query Language \u7684\u7b80\u5199\uff0c \u8be5\u8bed\u8a00\u6807\u51c6\u8ddf\u6807\u51c6 SQL \u6781\u4e3a\u76f8\u4f3c\uff0c\u4f46\u4e0d\u7b49\u540c\u4e8e\u4e3a\u6807\u51c6 SQL\u3002<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u4e3a\u4ec0\u4e48\u4f7f\u7528-Hive\" title=\"\u4e3a\u4ec0\u4e48\u4f7f\u7528 Hive\"><\/a>\u4e3a\u4ec0\u4e48\u4f7f\u7528 Hive<\/h3>\n<ul>\n<li>\u66f4\u53cb\u597d\u7684\u63a5\u53e3\uff1a\u64cd\u4f5c\u63a5\u53e3\u91c7\u7528\u7c7b SQL \u7684\u8bed\u6cd5\uff0c\u63d0\u4f9b\u5feb\u901f\u5f00\u53d1\u7684\u80fd\u529b<\/li>\n<li>\u66f4\u4f4e\u7684\u5b66\u4e60\u6210\u672c\uff1a\u907f\u514d\u4e86\u5199 MapReduce\uff0c\u51cf\u5c11\u5f00\u53d1\u4eba\u5458\u7684\u5b66\u4e60\u6210\u672c<\/li>\n<li>\u66f4\u597d\u7684\u6269\u5c55\u6027\uff1a\u53ef\u81ea\u7531\u6269\u5c55\u96c6\u7fa4\u89c4\u6a21\u800c\u65e0\u9700\u91cd\u542f\u670d\u52a1\uff0c\u8fd8\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u7279\u70b9\" title=\"Hive \u7279\u70b9\"><\/a>Hive \u7279\u70b9<\/h3>\n<p>\u4f18\u70b9\uff1a<\/p>\n<ul>\n<li>\u53ef\u6269\u5c55\u6027\uff0c\u6a2a\u5411\u6269\u5c55\uff0cHive \u53ef\u4ee5\u81ea\u7531\u7684\u6269\u5c55\u96c6\u7fa4\u7684\u89c4\u6a21\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u91cd\u542f\u670d\u52a1<br \/> <em>\u6a2a\u5411\u6269\u5c55<\/em>\uff1a\u901a\u8fc7\u5206\u62c5\u538b\u529b\u7684\u65b9\u5f0f\u6269\u5c55\u96c6\u7fa4\u7684\u89c4\u6a21<br \/> <em>\u7eb5\u5411\u6269\u5c55<\/em>\uff1a\u4e00\u53f0\u670d\u52a1\u5668cpu i7-6700k 4 \u6838\u5fc3 8 \u7ebf\u7a0b\uff0c8 \u6838\u5fc3 16 \u7ebf\u7a0b\uff0c\u5185\u5b5864G =&gt; 128G<\/li>\n<li>\u5ef6\u5c55\u6027\uff0cHive \u652f\u6301\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u6765\u5b9e\u73b0\u81ea\u5df1\u7684\u51fd\u6570<\/li>\n<li>\u826f\u597d\u7684\u5bb9\u9519\u6027\uff0c\u53ef\u4ee5\u4fdd\u969c\u5373\u4f7f\u6709\u8282\u70b9\u51fa\u73b0\u95ee\u9898\uff0cSQL \u8bed\u53e5\u4ecd\u53ef\u5b8c\u6210\u6267\u884c<\/li>\n<\/ul>\n<p>\u7f3a\u70b9\uff1a<\/p>\n<ul>\n<li>Hive \u4e0d\u652f\u6301\u8bb0\u5f55\u7ea7\u522b\u7684\u589e\u5220\u6539\u64cd\u4f5c\uff0c\u4f46\u662f\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2\u751f\u6210\u65b0\u8868\u6216\u8005\u5c06\u67e5\u8be2\u7ed3\u679c\u5bfc\u5165\u5230\u6587\u4ef6\u4e2d<\/li>\n<li>Hive \u7684\u67e5\u8be2\u5ef6\u65f6\u5f88\u4e25\u91cd\uff0c\u56e0\u4e3a MapReduce Job \u7684\u542f\u52a8\u8fc7\u7a0b\u6d88\u8017\u5f88\u957f\u65f6\u95f4\uff0c\u6240\u4ee5\u4e0d\u80fd \u7528\u5728\u4ea4\u4e92\u67e5\u8be2\u7cfb\u7edf\u4e2d\u3002<\/li>\n<li>Hive \u4e0d\u662f\u2f00\u4e2a OLAP(On-Line Analytical Processing) \u7cfb\u7edf\uff0c\u54cd\u5e94\u65f6\u95f4\u6162\uff0c\u65e0\u6cd5\u5b9e\u65f6\u66f4\u65b0\u6570\u636e<\/li>\n<li>Hive \u4e0d\u662f\u2f00\u4e2a OLTP(On-line Transaction Processing) \u7cfb\u7edf\uff0c\u5bf9\u4e8b\u52a1\u7684\u652f\u6301\u5f88\u5f31<\/li>\n<\/ul>\n<p>\u603b\u7ed3\uff1a<br \/>\u3000\u3000Hive \u5177\u6709 SQL \u6570\u636e\u5e93\u7684\u5916\u8868\uff0c\u4f46\u5e94\u7528\u573a\u666f\u5b8c\u5168\u4e0d\u540c\uff0cHive \u53ea\u9002\u5408\u7528\u6765\u505a\u6d77\u91cf\u79bb\u7ebf\u6570\u636e\u7edf\u8ba1\u5206\u6790\uff0c\u4e5f\u5c31\u662f\u6570\u636e\u4ed3\u5e93\u3002<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u67b6\u6784\" title=\"Hive \u67b6\u6784\"><\/a>Hive \u67b6\u6784<\/h3>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/07\/20200706_5f035467d18aa.jpg\" alt=\"hive \u5b66\u4e60\u4e4b\u8def\uff08\u4e00\uff09\u521d\u8bc6\"><\/p>\n<p>\u4ece\u4e0a\u56fe\u770b\u51fahive\u7684\u67b6\u6784\u7531\u56db\u90e8\u5206\u7ec4\u6210\uff1a<\/p>\n<h4><a href=\"https:\/\/www.studytime.xin\/article\/#\u7528\u6237\u63a5\u53e3\uff0c\u5305\u62ec-shell-CLI\uff08Client-Line-Interfice\uff09\uff0c-Thrift\u534f\u8bae\uff08JDBC-ODBC\uff09\uff0cWeb-UI\" title=\"\u7528\u6237\u63a5\u53e3\uff0c\u5305\u62ec shell\/CLI\uff08Client Line Interfice\uff09\uff0c Thrift\u534f\u8bae\uff08JDBC\/ODBC\uff09\uff0cWeb UI\"><\/a>\u7528\u6237\u63a5\u53e3\uff0c\u5305\u62ec shell\/CLI\uff08Client Line Interfice\uff09\uff0c Thrift\u534f\u8bae\uff08JDBC\/ODBC\uff09\uff0cWeb UI<\/h4>\n<ul>\n<li>CLI\uff0cShell \u7ec8\u7aef\u547d\u4ee4\u884c\uff08Command Line Interface\uff09\uff0c\u91c7\u7528\u4ea4\u4e92\u5f62\u5f0f\u4f7f\u7528 Hive \u547d\u4ee4\u884c\u4e0e Hive \u8fdb\u884c\u4ea4\u4e92\uff0c\u6700\u5e38\u7528\uff08\u5b66\u4e60\uff0c\u8c03\u8bd5\uff0c\u751f\u4ea7\uff09<\/li>\n<li>Thrift \u662f Facebook \u5f00\u53d1\u7684\u4e00\u4e2a\u8f6f\u4ef6\u6846\u67b6\uff0c\u53ef\u4ee5\u7528\u6765\u8fdb\u884c\u53ef\u6269\u5c55\u4e14\u8de8\u8bed\u8a00\u7684\u670d\u52a1\u7684\u5f00\u53d1\uff0c Hive \u96c6\u6210\u4e86\u8be5\u670d\u52a1\uff0c\u80fd\u8ba9\u4e0d\u540c\u7684\u7f16\u7a0b\u8bed\u8a00\u8c03\u7528 Hive \u7684\u63a5\u53e3\uff0c<br \/>JDBC\/ODBC\uff0c\u662f Hive \u7684\u57fa\u4e8e JDBC \u64cd\u4f5c\u63d0\u4f9b\u7684\u5ba2\u6237\u7aef\uff0c\u7528\u6237\uff08\u5f00\u53d1\u5458\uff0c\u8fd0\u7ef4\u4eba\u5458\uff09\u901a\u8fc7 \u8fd9\u8fde\u63a5\u81f3 Hive server \u670d\u52a1<\/li>\n<li>Web UI\uff0c\u901a\u8fc7\u6d4f\u89c8\u5668\u8bbf\u95ee Hive<\/li>\n<\/ul>\n<h4><a href=\"https:\/\/www.studytime.xin\/article\/#\u5e95\u5c42\u7684Driver\uff1a-\u9a71\u52a8\u5668Driver\uff0c\u7f16\u8bd1\u5668Compiler\uff0c\u4f18\u5316\u5668Optimizer\uff0c\u6267\u884c\u5668Executor\" title=\"\u5e95\u5c42\u7684Driver\uff1a \u9a71\u52a8\u5668Driver\uff0c\u7f16\u8bd1\u5668Compiler\uff0c\u4f18\u5316\u5668Optimizer\uff0c\u6267\u884c\u5668Executor\"><\/a>\u5e95\u5c42\u7684Driver\uff1a \u9a71\u52a8\u5668Driver\uff0c\u7f16\u8bd1\u5668Compiler\uff0c\u4f18\u5316\u5668Optimizer\uff0c\u6267\u884c\u5668Executor<\/h4>\n<p>Driver \u7ec4\u4ef6\u5b8c\u6210 HQL \u67e5\u8be2\u8bed\u53e5\u4ece\u8bcd\u6cd5\u5206\u6790\uff0c\u8bed\u6cd5\u5206\u6790\uff0c\u7f16\u8bd1\uff0c\u4f18\u5316\uff0c\u4ee5\u53ca\u751f\u6210\u903b\u8f91\u6267\u884c\u8ba1\u5212\u7684\u751f\u6210\u3002\u751f\u6210\u7684\u903b\u8f91\u6267\u884c\u8ba1\u5212\u5b58\u50a8\u5728 HDFS \u4e2d\uff0c\u5b83\u7684\u8f93\u5165\u662fSQL\u8bed\u53e5\uff0c\u8f93\u51fa\u4e3a\u4e00\u7cfb\u5217\u5206\u5e03\u5f0f\u6267\u884c\u7a0b\u5e8f\uff08\u53ef\u4ee5\u4e3aMap Reduce\u3001Tez\u3001Spark\u7b49\uff09<\/p>\n<p>Hive \u7684\u6838\u5fc3\u662f\u9a71\u52a8\u5f15\u64ce\uff0c \u9a71\u52a8\u5f15\u64ce\u7531\u56db\u90e8\u5206\u7ec4\u6210\uff1a<br \/>(1) \u89e3\u91ca\u5668\uff1a\u89e3\u91ca\u5668\u7684\u4f5c\u7528\u662f\u5c06 HiveSQL \u8bed\u53e5\u8f6c\u6362\u4e3a\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09<br \/>(2) \u7f16\u8bd1\u5668\uff1a\u7f16\u8bd1\u5668\u662f\u5c06\u8bed\u6cd5\u6811\u7f16\u8bd1\u4e3a\u903b\u8f91\u6267\u884c\u8ba1\u5212<br \/>(3) \u4f18\u5316\u5668\uff1a\u4f18\u5316\u5668\u662f\u5bf9\u903b\u8f91\u6267\u884c\u8ba1\u5212\u8fdb\u884c\u4f18\u5316<br \/>(4) \u6267\u884c\u5668\uff1a\u6267\u884c\u5668\u662f\u8c03\u7528\u5e95\u5c42\u7684\u8fd0\u884c\u6846\u67b6\u6267\u884c\u903b\u8f91\u6267\u884c\u8ba1\u5212<\/p>\n<h4><a href=\"https:\/\/www.studytime.xin\/article\/#Metastore\uff0c\u5143\u6570\u636e\u5b58\u50a8\u7cfb\u7edf\" title=\"Metastore\uff0c\u5143\u6570\u636e\u5b58\u50a8\u7cfb\u7edf\"><\/a>Metastore\uff0c\u5143\u6570\u636e\u5b58\u50a8\u7cfb\u7edf<\/h4>\n<ul>\n<li>\u5143\u6570\u636e\uff0c\u901a\u4fd7\u7684\u8bb2\uff0c\u5c31\u662f\u5b58\u50a8\u5728 Hive \u4e2d\u7684\u6570\u636e\u7684\u63cf\u8ff0\u4fe1\u606f\u3002<\/li>\n<li>Hive \u4e2d\u7684\u5143\u6570\u636e\u901a\u5e38\u5305\u62ec\uff1a\u8868\u7684\u540d\u5b57\uff0c\u8868\u7684\u5217\u548c\u5206\u533a\u53ca\u5176\u5c5e\u6027\uff0c\u8868\u7684\u5c5e\u6027\uff08\u5185\u90e8\u8868\u548c \u5916\u90e8\u8868\uff09\uff0c\u8868\u7684\u6570\u636e\u6240\u5728\u76ee\u5f55<\/li>\n<li>Metastore \u9ed8\u8ba4\u5b58\u5728\u81ea\u5e26\u7684 Derby \u6570\u636e\u5e93\u4e2d\u3002\u7f3a\u70b9\u5c31\u662f\u4e0d\u9002\u5408\u591a\u7528\u6237\u64cd\u4f5c\uff0c\u5e76\u4e14\u6570\u636e\u5b58 \u50a8\u76ee\u5f55\u4e0d\u56fa\u5b9a\u3002\u6570\u636e\u5e93\u8ddf\u7740 Hive \u8d70\uff0c\u6781\u5ea6\u4e0d\u65b9\u4fbf\u7ba1\u7406\uff0c\u6b63\u5f0f\u73af\u5883\u4e00\u822c\u4f7f\u7528Mysql \u4ee3\u66ff<\/li>\n<li>Hive \u548c MySQL \u4e4b\u95f4\u901a\u8fc7 MetaStore \u670d\u52a1\u4ea4\u4e92<\/li>\n<\/ul>\n<h4><a href=\"https:\/\/www.studytime.xin\/article\/#Hadoop\" title=\"Hadoop\"><\/a>Hadoop<\/h4>\n<p>Hive \u4f9d\u8d56\u4e8e Hadoop , \u5305\u62ec\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf HDFS\u3001\u5206\u5e03\u5f0f\u8d44\u6e90\u7ba1\u7406\u7cfb\u7edf Yarn \u4ee5\u53ca\u5206\u5e03\u5f0f\u8ba1\u7b97\u5f15\u64ce MapReduce\u3001Hive \u4e2d\u7684\u6570\u636e\u8868\u5bf9\u5e94\u7684\u6570\u636e\u5b58\u653e\u5728 HDFS \u4e0a\uff0c\u8ba1\u7b97\u8d44\u6e90\u6709 Yarn \u5206\u914d\uff0c\u800c\u8ba1\u7b97\u4efb\u52a1\u5219\u6765\u81ea MapReduce \u5f15\u64ce\u3002<\/p>\n<p>\u7279\u6b8a\u8bf4\u660e\uff1a<br \/>\u6839\u636e Metstore \u7684\u8fd0\u884c\u65b9\u5f0f\u4e0d\u540c\uff0c\u53ef\u4ee5\u5c06 Hive \u5206\u6210\u4e09\u79cd\u90e8\u7f72\u6a21\u5f0f\uff1a<\/p>\n<ul>\n<li>\u5d4c\u5165\u5f0f\u6a21\u5f0f\uff0cMetastore \u548c\u6570\u636e\u5e93(Derby) \u4e24\u4e2a\u8fdb\u7a0b\u5d4c\u5165\u5230 Drive \u4e2d\uff0c\u5f53 Drive \u542f\u52a8\u65f6\u4f1a\u540c\u65f6\u8fd0\u884c\u8fd9\u4e24\u4e2a\u8fdb\u884c\uff0c\u4e00\u822c\u7528\u4e8e\u6d4b\u8bd5<\/li>\n<li>\u672c\u5730\u9b54\u672f\uff0cDriver \u548c Metastore \u8fd0\u884c\u5728\u672c\u5730\uff0c\u800c\u6570\u636e\u5e93\uff08\u6bd4\u5982Mysql\uff09\u542f\u52a8\u5728\u4e00\u4e2a\u5171\u4eab\u70b9\u4e0a<\/li>\n<li>\u8fdc\u7a0b\u6a21\u5f0f\uff0cMetastore \u8fd0\u884c\u5728\u4e00\u4e2a\u5355\u72ec\u8282\u70b9\u4e0a\uff0c\u6709\u5176\u4ed6\u6240\u6709\u670d\u52a1\u5171\u4eab\uff0c\u4f7f\u7528 Beeline,JDBC\/ODBC,Cli\u548cTrift\u7b49\u65b9\u5f0f\u8bbf\u95eeHive\u662f\uff0c\u5219\u662f\u91c7\u7528\u8be5\u6a21\u5f0f\uff0c\u8fd9\u662f\u4e00\u79cd\u5e38\u7528\u751f\u4ea7\u73af\u5883\u4e0b\u7684\u90e8\u7f72\u65b9\u5f0f<\/li>\n<\/ul>\n<p>\u603b\u7ed3:<br \/>Hive \u662fHadoop \u751f\u6001\u7cfb\u7edf\u4e2d\u6700\u65e9\u7684 SQL \u5f15\u64ce\uff0c\u5b83\u7684 Metastore \u670d\u52a1\u5df2\u7ecf\u88ab\u8d8a\u6765\u8d8a\u591a\u7684 SQL \u5f15\u64ce\u652f\u6301\uff0c\u5df2\u7ecf\u6210\u4e3a\u5927\u6570\u636e\u7cfb\u7edf\u7684\u5143\u4fe1\u606f\u6807\u51c6\u5b58\u50a8\u4ed3\u5e93\u3002<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#\u6267\u884c\u6d41\u7a0b\" title=\"\u6267\u884c\u6d41\u7a0b\"><\/a>\u6267\u884c\u6d41\u7a0b<\/h3>\n<p>HiveQL \u901a\u8fc7\u547d\u4ee4\u884c\u6216\u8005\u5ba2\u6237\u7aef\u63d0\u4ea4\uff0c\u7ecf\u8fc7 Compiler \u7f16\u8bd1\u5668\uff0c\u8fd0\u7528 MetaStore \u4e2d\u7684\u5143\u6570 \u636e\u8fdb\u884c\u7c7b\u578b\u68c0\u6d4b\u548c\u8bed\u6cd5\u5206\u6790\uff0c\u751f\u6210\u4e00\u4e2a\u903b\u8f91\u65b9\u6848(Logical Plan)\uff0c\u7136\u540e\u901a\u8fc7\u7684\u4f18\u5316\u5904\u7406\uff0c\u4ea7\u751f \u4e00\u4e2a MapReduce \u4efb\u52a1\u3002<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u67e5\u8be2\u5f15\u64ce\" title=\"Hive \u67e5\u8be2\u5f15\u64ce\"><\/a>Hive \u67e5\u8be2\u5f15\u64ce<\/h3>\n<p>Hive \u9ed8\u8ba4\u662f\u6784\u5efa\u5728 MapReduce \u8ba1\u7b97\u5f15\u64ce\u4e0a\uff0c\u4f34\u968f\u65b0\u578b\u8ba1\u7b97\u5f15\u64ce\u7684\u51fa\u73b0\uff0cHive\u4e5f\u9010\u6b65\u652f\u6301\u66f4\u9ad8\u6548\u7684 DAG \u8ba1\u7b97\u5f15\u64ce\uff0c\u5305\u62ec Tez \u548c Spark \u7b49\u3002<\/p>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u652f\u6301\u7684\u6570\u636e\u7c7b\u578b\" title=\"Hive \u652f\u6301\u7684\u6570\u636e\u7c7b\u578b\"><\/a>Hive \u652f\u6301\u7684\u6570\u636e\u7c7b\u578b<\/h3>\n<p>Hive \u7684\u5185\u7f6e\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u5206\u4e3a\u4e24\u5927\u7c7b\uff1a<\/p>\n<ul>\n<li>\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ecBoolean\uff0c\u5b57\u7b26\u4e32\u578b\uff0c\u6d6e\u70b9\u578b\uff0c\u6574\u578b<\/li>\n<li>\u590d\u6742\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u7ec4\uff0cmap\uff0cstruct\u3002<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>\u5206\u7c7b<\/th>\n<th>\u7c7b\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u5b57\u9762\u91cf\u793a\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>BOOLEAN<\/td>\n<td>true\/false<\/td>\n<td>TRUE<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>TINYINT<\/td>\n<td>1\u5b57\u8282\u7684\u6709\u7b26\u53f7\u6574\u6570<\/td>\n<td>-128~127<\/td>\n<td>1Y<\/td>\n<\/tr>\n<tr>\n<td>SMALLINT<\/td>\n<td>2\u4e2a\u5b57\u8282\u7684\u6709\u7b26\u53f7\u6574\u6570<\/td>\n<td>-32768~32767<\/td>\n<td>1S<\/td>\n<\/tr>\n<tr>\n<td>INT<\/td>\n<td>4\u4e2a\u5b57\u8282\u7684\u5e26\u7b26\u53f7\u6574\u6570<\/td>\n<td>1<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>BIGINT<\/td>\n<td>8\u5b57\u8282\u5e26\u7b26\u53f7\u6574\u6570<\/td>\n<td>1L<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>FLOAT<\/td>\n<td>4\u5b57\u8282\u5355\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/td>\n<td>1.0<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>DOUBLE<\/td>\n<td>8\u5b57\u8282\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/td>\n<td>1.0<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>DEICIMAL<\/td>\n<td>\u4efb\u610f\u7cbe\u5ea6\u7684\u5e26\u7b26\u53f7\u5c0f\u6570<\/td>\n<td>1.0<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>STRING<\/td>\n<td>\u5b57\u7b26\u4e32\uff0c\u53d8\u957f<\/td>\n<td>\u201ca\u201d,\u2019b\u2019<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>VARCHAR<\/td>\n<td>\u53d8\u957f\u5b57\u7b26\u4e32<\/td>\n<td>\u201ca\u201d,\u2019b\u2019<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>CHAR<\/td>\n<td>\u56fa\u5b9a\u957f\u5ea6\u5b57\u7b26\u4e32<\/td>\n<td>\u201ca\u201d,\u2019b\u2019<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>BINARY<\/td>\n<td>\u5b57\u8282\u6570\u7ec4<\/td>\n<td>\u65e0\u6cd5\u8868\u793a<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>DATE<\/td>\n<td>\u65e5\u671f<\/td>\n<td>\u20182016-03-29\u2019<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>TIMESTAMP<\/td>\n<td>\u65f6\u95f4\u6233\uff0c\u7eb3\u79d2\u7cbe\u5ea6<\/td>\n<td>122327493795<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u590d\u6742\u7c7b\u578b<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5206\u7c7b<\/th>\n<th>\u7c7b\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u5b57\u9762\u91cf\u793a\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ARRAY<\/td>\n<td><\/td>\n<td>array(1,2)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>MAP<\/td>\n<td>key-value,key\u5fc5\u987b\u4e3a\u539f\u59cb\u7c7b\u578b\uff0cvalue\u53ef\u4ee5\u4efb\u610f\u7c7b\u578b<\/td>\n<td>map(\u2018a\u2019,1,\u2019b\u2019,2)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>STRUCT<\/td>\n<td>\u5b57\u6bb5\u96c6\u5408,\u7c7b\u578b\u53ef\u4ee5\u4e0d\u540c<\/td>\n<td>struct(\u20181\u2019,1,1.0),<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u6570\u636e\u8868\u591a\u7ea7\u6982\u5ff5\" title=\"Hive \u6570\u636e\u8868\u591a\u7ea7\u6982\u5ff5\"><\/a>Hive \u6570\u636e\u8868\u591a\u7ea7\u6982\u5ff5<\/h3>\n<p>Hive \u6570\u636e\u8868\u662f\u591a\u5c42\u7ea7\u7684\uff0cHive \u4e2d\u53ef\u4ee5\u6709\u591a\u4e2a\u6570\u636e\u5e93\uff0c\u6bcf\u4e2a\u6570\u636e\u5e93\u4e2d\u53ef\u4ee5\u5b58\u5728\u591a\u4e2a\u6570\u636e\u8868\uff0c\u6bcf\u4e2a\u6570\u636e\u8868\u53ef\u4ee5\u5212\u5206\u51fa\u591a\u4e2a\u5206\u533a\u6216\u8005\u6570\u636e\u540c\uff0c\u6bcf\u4e2a\u5206\u533a\u5185\u90e8\u4e5f\u53ef\u4ee5\u6709\u591a\u4e2a\u6570\u636e\u6876\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/07\/20200706_5f03546d1d90c.jpg\" alt=\"hive \u5b66\u4e60\u4e4b\u8def\uff08\u4e00\uff09\u521d\u8bc6\"><\/p>\n<ul>\n<li>database\uff1a\u5728 HDFS \u4e2d\u8868\u73b0\u4e3a${hive.metastore.warehouse.dir}\u76ee\u5f55\u4e0b\u4e00\u4e2a\u6587\u4ef6\u5939<\/li>\n<li>table\uff1a\u5728 HDFS \u4e2d\u8868\u73b0\u6240\u5c5e database \u76ee\u5f55\u4e0b\u4e00\u4e2a\u6587\u4ef6\u5939<\/li>\n<li>external table\uff1a\u4e0e table \u7c7b\u4f3c\uff0c\u4e0d\u8fc7\u5176\u6570\u636e\u5b58\u653e\u4f4d\u7f6e\u53ef\u4ee5\u6307\u5b9a\u4efb\u610f HDFS \u76ee\u5f55\u8def\u5f84<\/li>\n<li>partition\uff1a\u5728 HDFS \u4e2d\u8868\u73b0\u4e3a table \u76ee\u5f55\u4e0b\u7684\u5b50\u76ee\u5f55<\/li>\n<li>bucket\uff1a\u5728 HDFS \u4e2d\u8868\u73b0\u4e3a\u540c\u4e00\u4e2a\u8868\u76ee\u5f55\u6216\u8005\u5206\u533a\u76ee\u5f55\u4e0b\u6839\u636e\u67d0\u4e2a\u5b57\u6bb5\u7684\u503c\u8fdb\u884c hash \u6563 \u5217\u4e4b\u540e\u7684\u591a\u4e2a\u6587\u4ef6<\/li>\n<li>view\uff1a\u4e0e\u4f20\u7edf\u6570\u636e\u5e93\u7c7b\u4f3c\uff0c\u53ea\u8bfb\uff0c\u57fa\u4e8e\u57fa\u672c\u8868\u521b\u5efa<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.studytime.xin\/article\/#Hive-\u4e2d\u7684\u8868\u5206\u4e3a\u5185\u90e8\u8868\u3001\u5916\u90e8\u8868\u3001\u5206\u533a\u8868\u548c-Bucket-\u8868\" title=\"Hive \u4e2d\u7684\u8868\u5206\u4e3a\u5185\u90e8\u8868\u3001\u5916\u90e8\u8868\u3001\u5206\u533a\u8868\u548c Bucket \u8868\"><\/a>Hive \u4e2d\u7684\u8868\u5206\u4e3a\u5185\u90e8\u8868\u3001\u5916\u90e8\u8868\u3001\u5206\u533a\u8868\u548c Bucket \u8868<\/h3>\n<p>\u5185\u90e8\u8868\u548c\u5916\u90e8\u8868\u7684\u533a\u522b\uff1a<\/p>\n<ul>\n<li>\u5220\u9664\u5185\u90e8\u8868\uff0c\u5220\u9664\u8868\u5143\u6570\u636e\u548c\u6570\u636e<\/li>\n<li>\u5220\u9664\u5916\u90e8\u8868\uff0c\u5220\u9664\u5143\u6570\u636e\uff0c\u4e0d\u5220\u9664\u6570\u636e<\/li>\n<\/ul>\n<p>\u5185\u90e8\u8868\u548c\u5916\u90e8\u8868\u7684\u4f7f\u7528\u9009\u62e9\uff1a<\/p>\n<ul>\n<li>\u5927\u591a\u6570\u60c5\u51b5\uff0c\u4ed6\u4eec\u7684\u533a\u522b\u4e0d\u660e\u663e\uff0c\u5982\u679c\u6570\u636e\u7684\u6240\u6709\u5904\u7406\u90fd\u5728 Hive \u4e2d\u8fdb\u884c\uff0c\u90a3\u4e48\u503e\u5411\u4e8e \u9009\u62e9\u5185\u90e8\u8868\uff0c\u4f46\u662f\u5982\u679c Hive \u548c\u5176\u4ed6\u5de5\u5177\u8981\u9488\u5bf9\u76f8\u540c\u7684\u6570\u636e\u96c6\u8fdb\u884c\u5904\u7406\uff0c\u5916\u90e8\u8868\u66f4\u5408\u9002\u3002<\/li>\n<li>\u4f7f\u7528\u5916\u90e8\u8868\u8bbf\u95ee\u5b58\u50a8\u5728 HDFS \u4e0a\u7684\u521d\u59cb\u6570\u636e\uff0c\u7136\u540e\u901a\u8fc7 Hive \u8f6c\u6362\u6570\u636e\u5e76\u5b58\u5230\u5185\u90e8\u8868\u4e2d<\/li>\n<li>\u4f7f\u7528\u5916\u90e8\u8868\u7684\u573a\u666f\u662f\u9488\u5bf9\u4e00\u4e2a\u6570\u636e\u96c6\u6709\u591a\u4e2a\u4e0d\u540c\u7684 Schema<\/li>\n<li>\u901a\u8fc7\u5916\u90e8\u8868\u548c\u5185\u90e8\u8868\u7684\u533a\u522b\u548c\u4f7f\u7528\u9009\u62e9\u7684\u5bf9\u6bd4\u53ef\u4ee5\u770b\u51fa\u6765\uff0chive \u5176\u5b9e\u4ec5\u4ec5\u53ea\u662f\u5bf9\u5b58\u50a8\u5728 HDFS \u4e0a\u7684\u6570\u636e\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u7684\u62bd\u8c61\u3002\u800c\u4e0d\u662f\u7ba1\u7406\u5b58\u50a8\u5728 HDFS \u4e0a\u7684\u6570\u636e\u3002\u6240\u4ee5\u4e0d\u7ba1\u521b\u5efa\u5185\u90e8 \u8868\u8fd8\u662f\u5916\u90e8\u8868\uff0c\u90fd\u53ef\u4ee5\u5bf9 hive \u8868\u7684\u6570\u636e\u5b58\u50a8\u76ee\u5f55\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u589e\u5220\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Hive \u662f\u4ec0\u4e48\uff1f \u5b98\u65b9\u89e3\u91ca: H&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131830"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=131830"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/131830\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=131830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=131830"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=131830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}