{"id":2173,"date":"2020-04-08T16:28:31","date_gmt":"2020-04-08T08:28:31","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=2173"},"modified":"2023-08-04T14:06:01","modified_gmt":"2023-08-04T06:06:01","slug":"hive%e5%88%86%e5%8c%ba%e4%bf%ae%e5%a4%8d%e5%91%bd%e4%bb%a4msck%e4%bb%8b%e7%bb%8d%e4%b8%8e%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=2173","title":{"rendered":"Hive\u5206\u533a\u4fee\u590d\u547d\u4ee4MSCK\u4ecb\u7ecd\u4e0e\u4f7f\u7528"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<hr \/>\n<p>\u5f53\u6211\u4eec\u901a\u8fc7hdfs dfs -put\u6216\u8005hdfs api\u5c06\u5206\u533a\u8868\u7684\u5206\u533a\u76ee\u5f55\u632a\u5230hive\u5206\u533a\u8868\u76ee\u5f55\u4e0b\u65f6\uff0c\u6570\u636e\u5728hive\u4e2d\u662f\u65e0\u6cd5\u88ab\u67e5\u8be2\u5230\u7684\u3002<br \/>\n\u6b64\u65f6\u6211\u4eec\u9700\u8981\u624b\u52a8\u4e3a\u8868\u6dfb\u52a0\u6307\u5b9a\u5206\u533a\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <strong><code>alter table add partition (\\&lt;partition_key&gt;=\\&lt;value&gt;)<\/code><\/strong> \u547d\u4ee4\u624b\u52a8\u6dfb\u52a0\u6307\u5b9a\u7684\u5206\u533a\uff1b\u672c\u6848\u4f8b\u4ecb\u7ecd\u4e00\u79cd\u6bd4\u8f83\u7b80\u5355\u7684\u6dfb\u52a0\u5206\u533a\u7684\u65b9\u5f0f\uff1b<\/p>\n<blockquote>\n<p>\u8be5\u65b9\u6cd5\u53ea\u9002\u7528\u4e8e\u5355\u503c\u5206\u533a\u8868;<br \/>\n\u8be5\u65b9\u6cd5\u652f\u6301\u591a\u7ea7\u5206\u533a\u8868;<br \/>\n\u8be5\u65b9\u6cd5\u4e0d\u9002\u7528\u4e8e\u8303\u56f4\u5206\u533a\u8868\uff1b<br \/>\n\u8be5\u65b9\u6cd5\u4e0d\u9002\u7528 INTERVAL \u5206\u533a\u8868;<\/p>\n<\/blockquote>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<ul>\n<li>\u73af\u5883\u51c6\u5907\uff1aTDH6.2.1<\/li>\n<\/ul>\n<p>MSCK \u662f\u4e00\u4e2a metastore \u68c0\u67e5\u547d\u4ee4<strong><code>MSCK REPAIR TABLE table_name<\/code><\/strong>\uff0c\u662f\u901a\u8fc7\u5bf9\u6bd4metastore\u4e2d partition \u5143\u4fe1\u606f\u4e0e HDFS \u76ee\u5f55\u4e0b\u7684\u5206\u533a\u4fe1\u606f\u6765\u5b9e\u73b0\u7684\uff1b\u53ef\u4ee5\u5c06 HDFS \u76ee\u5f55\u4e0b\u5b58\u5728\u4f46\u8868\u7684 metastore \u4e2d\u4e0d\u5b58\u5728\u7684 partition \u5143\u4fe1\u606f\u66f4\u65b0\u5230 metastore \u4e2d\u3002<\/p>\n<blockquote>\n<p>Ps\uff1aMSCK \u4fee\u590d\u547d\u4ee4\u4e0d\u652f\u6301 db_name.tab_name\uff0c\u53ea\u80fd\u7528tab_name\uff0c\u4e5f\u5c31\u662f <strong><code>USE db_name;MSCK REPAIR TABLE tab_name<\/code><\/strong><\/p>\n<\/blockquote>\n<h4>1. \u521b\u5efa\u5206\u533a\u8868<\/h4>\n<pre><code class=\"language-sql\">> DROP TABLE IF EXISTS repair_test;\n> CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING);<\/code><\/pre>\n<h4>2. \u5411\u4e00\u4e2a\u5206\u533a\u63d2\u5165\u6570\u636e<\/h4>\n<pre><code class=\"language-sql\">> INSERT INTO TABLE repair_test PARTITION(par=\"partition_1\") SELECT \"test\" FROM system.dual;\n1 row affected (7.051 seconds)\n> SHOW PARTITIONS repair_test;\n+------------------+\n|    partition     |\n+------------------+\n| par=partition_1  |\n+------------------+\n1 row selected (0.23 seconds)\n> select * from repair_test;\n+--------+--------------+\n| col_a  |     par      |\n+--------+--------------+\n| test   | partition_1  |\n+--------+--------------+<\/code><\/pre>\n<h4>3. \u901a\u8fc7hdfs\u7684put\u547d\u4ee4\u624b\u52a8\u521b\u5efa\u4e00\u4e2a\u6570\u636e<\/h4>\n<pre><code class=\"language-shell\">$ echo '123123' > test.txt\n$ hadoop fs -mkdir hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_2\n$ hadoop fs -put -f .\/test.txt  hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_2\n2020-01-21 10:52:18,688 INFO util.KerberosUtil: Using principal pattern: HTTP\/_HOST\n$ hadoop fs -ls -R hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/\n2020-01-21 10:52:38,205 INFO util.KerberosUtil: Using principal pattern: HTTP\/_HOST\ndrwx--x--x   - hive hive          0 2020-01-21 10:50 hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_1\n-rwx--x--x   3 hive hive          5 2020-01-21 10:50 hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_1\/000000_0\ndrwxr-xr-x   - hdfs hive          0 2020-01-21 10:52 hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_2\n-rw-r--r--   3 hdfs hive          7 2020-01-21 10:52 hdfs:\/\/nameservice1\/inceptor1\/user\/hive\/warehouse\/default.db\/hive\/repair_test\/par=partition_2\/test.txt\n<\/code><\/pre>\n<h4>4. \u6211\u4eec\u67e5\u770b\u5206\u533a\u6570\u636e\uff0c\u53d1\u73b0partition_2\u8fd9\u4e2a\u5206\u533a\u5e76\u6ca1\u6709\u52a0\u5230hive\u4e2d<\/h4>\n<pre><code class=\"language-sql\">> SHOW PARTITIONS repair_test;\n+------------------+\n|    partition     |\n+------------------+\n| par=partition_1  |\n+------------------+\n1 row selected (0.215 seconds)<\/code><\/pre>\n<h4>5. \u8fd0\u884cmsck repair table \u547d\u4ee4\u518d\u6b21\u67e5\u770b\u5206\u533a\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u901a\u8fc7put\u547d\u4ee4\u653e\u5165\u7684\u5206\u533a\u5df2\u7ecf\u53ef\u4ee5\u67e5\u8be2<\/h4>\n<pre><code class=\"language-sql\">> MSCK REPAIR TABLE repair_test;\nNo rows affected (0.472 seconds)\n> SHOW PARTITIONS repair_test;\n+------------------+\n|    partition     |\n+------------------+\n| par=partition_1  |\n| par=partition_2  |\n+------------------+\n2 rows selected (0.166 seconds)\n> select * from repair_test;\n+---------+--------------+\n|  col_a  |     par      |\n+---------+--------------+\n| test    | partition_1  |\n| 123123  | partition_2  |\n+---------+--------------+\n2 rows selected (0.809 seconds)<\/code><\/pre>\n<h4>\u9644\u5f55\uff1a\u901a\u8fc7<code>alter table add partition (\\&lt;partition_key&gt;=\\&lt;value&gt;)<\/code>\u6dfb\u52a0\u5206\u533a\u7684\u65b9\u6cd5<\/h4>\n<pre><code class=\"language-sql\">> alter table repair_test add partition(par='partition_2');\nNo rows affected (0.374 seconds)\n> SHOW PARTITIONS repair_test;\n+------------------+\n|    partition     |\n+------------------+\n| par=partition_1  |\n| par=partition_2  |\n+------------------+\n2 rows selected (0.241 seconds)\n> select * from repair_test;\n+---------+--------------+\n|  col_a  |     par      |\n+---------+--------------+\n| test    | partition_1  |\n| 123123  | partition_2  |\n+---------+--------------+\n2 rows selected (0.908 seconds)\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 \u5f53\u6211\u4eec\u901a\u8fc7hdfs dfs -put\u6216\u8005hdfs api\u5c06\u5206\u533a\u8868\u7684\u5206\u533a\u76ee\u5f55\u632a\u5230hive\u5206\u533a\u8868\u76ee\u5f55\u4e0b\u65f6 ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=2173\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40],"tags":[],"class_list":["post-2173","post","type-post","status-publish","format-standard","hentry","category-sql_issue"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/2173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2173"}],"version-history":[{"count":3,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/2173\/revisions"}],"predecessor-version":[{"id":10593,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/2173\/revisions\/10593"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}