{"id":5201,"date":"2021-02-04T09:21:14","date_gmt":"2021-02-04T01:21:14","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=5201"},"modified":"2021-04-16T11:25:23","modified_gmt":"2021-04-16T03:25:23","slug":"orc-%e4%ba%8b%e5%8a%a1%e8%a1%a8%e6%89%8b%e5%8a%a8-compact-%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=5201","title":{"rendered":"orc \u4e8b\u52a1\u8868\u624b\u52a8 compact \u4ecb\u7ecd"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<p>orc \u4e8b\u52a1\u8868\u662f\u4e00\u79cd inceptor \u4e2d\u53ef\u4ee5\u652f\u6301 CRUD \u64cd\u4f5c\u7684\u7684 ORC \u8868\uff0c\u5176\u57fa\u672c\u539f\u7406\u662f\u5bf9\u4e8e\u6bcf\u4e2a CRUD \u64cd\u4f5c\uff08create\uff0cinsert\/merge into\uff0cupdate\uff0cdelete\uff0cmerge into\uff09\uff0c\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u5bf9\u5e94\u7248\u672c\uff0c\u5f53\u64cd\u4f5c\u9891\u7e41\u65f6\uff0c\u4f1a\u5728 hdfs \u4ea7\u751f\u5927\u91cf\u5c0f\u6587\u4ef6\uff0c\u4e3a\u4e86\u907f\u514d\u5c0f\u6587\u4ef6\u7684\u5371\u5bb3\uff08\u5c0f\u6587\u4ef6\u5371\u5bb3\u53c2\u89c1 <a href=\"\/?p=3150\" title=\"inceptor \u5c0f\u6587\u4ef6\u89e3\u51b3\u65b9\u6848\u6c47\u603b\">inceptor \u5c0f\u6587\u4ef6\u89e3\u51b3\u65b9\u6848\u6c47\u603b<\/a>\uff09\uff0cInceptor \u4e2d\u8bbe\u8ba1\u4e86 compact \u673a\u5236\uff0c\u5bf9\u6bcf\u4e2a orc \u4e8b\u52a1\u8868\u8fdb\u884c compact\uff0c\u5c06\u591a\u4e2a\u7248\u672c\uff08\u5c0f\u6587\u4ef6\uff09\u5408\u5e76\u6210\u4e00\u4e2a\u7248\u672c\u3002<\/p>\n<p>\u5f53\u6ee1\u8db3 compact \u6761\u4ef6\uff0c\u4f46\u662f compact \u5931\u8d25\u8d85\u8fc7 3 \u6b21\uff0c\u4f1a\u5c06\u8be5\u8868\u52a0\u5165 compact blacklist\uff0c\u540e\u7eed\u4e0d\u518d compact\uff1b<\/p>\n<hr \/>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e00\u4e0b\u5f53 compact \u5931\u8d25\u65f6\uff0c\u5982\u4f55\u624b\u52a8\u5b9e\u73b0 compact\uff0c\u5e76\u68c0\u6d4b compact \u7684\u8fdb\u5ea6\u60c5\u51b5\uff0c\u4e3b\u8981\u5305\u62ec\u4e00\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ol>\n<li>\u5f00\u542f orc \u4e8b\u52a1\u8868\u7684 compact \u529f\u80fd<\/li>\n<li>\u63d0\u4ea4 compact \u4efb\u52a1<\/li>\n<li>\u76d1\u63a7 compact \u4efb\u52a1\u7684\u6267\u884c\u60c5\u51b5<\/li>\n<\/ol>\n<hr \/>\n<h4>\u64cd\u4f5c\u6b65\u9aa4<\/h4>\n<h5>\u5f00\u542f compact \u529f\u80fd<\/h5>\n<pre><code class=\"language-sql\">ALTER TABLE table_name ENABLE COMPACT\u037e\n-- \u5f00\u542f\u8868\u7ea7\u522b\u7684 compact \u529f\u80fd\n\nALTER TABLE table_name PARTITION (partition_name) ENABLE COMPACT\u037e\n-- \u5f00\u542f\u5355\u503c\u5206\u533a\u7ea7\u522b\u7684 compact \u529f\u80fd\n\nALTER TABLE table_name PARTITION range_partition_name ENABLE COMPACT\u037e\n-- \u5f00\u542f\u8303\u56f4\u5206\u533a\u7ea7\u522b\u7684 compact \u529f\u80fd<\/code><\/pre>\n<h5>\u63d0\u4ea4 compact \u4efb\u52a1<\/h5>\n<ol>\n<li>\n<p>\u5f02\u6b65\u63d0\u4ea4 compact \u4efb\u52a1\uff0c\u6267\u884c\u8be5\u547d\u4ee4\uff0c\u76f8\u5f53\u4e8e\u5728\u540e\u53f0\u63d0\u4ea4\u4e86compact\u8bf7\u6c42\uff0cbeeline\u6216\u8005waterdrop\u4f1a\u7acb\u523b\u8fd4\u56de\u5e76\u663e\u793a\u63d0\u4ea4\u6210\u529f\u3002<\/p>\n<pre><code class=\"language-sql\">alter table tableName compact 'major';<\/code><\/pre>\n<\/li>\n<li>\n<p>\u540c\u6b65\u63d0\u4ea4 compact \u547d\u4ee4\uff0c\u5728 beeline \u6216\u8005 waterdrop \u6267\u884c\u8be5\u547d\u4ee4\u540e\uff0c\u4f1a\u7b49\u5230 compact \u5b8c\u6210\uff0c\u6216\u8005\u5931\u8d25\u624d\u4f1a\u7ed3\u675f\u3002<\/p>\n<pre><code class=\"language-sql\">alter table tableName compact 'major' and wait;<\/code><\/pre>\n<\/li>\n<\/ol>\n<h5>\u76d1\u63a7 compact \u4efb\u52a1\u7684\u6267\u884c\u60c5\u51b5<\/h5>\n<p>\u81f3\u4e8e compact \u662f\u5426\u771f\u6b63\u6210\u529f\u6267\u884c\uff0c\u9700\u8981\u901a\u8fc7 yarn resource manager \u67e5\u770b yarn \u4e0a\u9762 application \u7684\u65e5\u5fd7\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/02\/image-1612402577362.png\" alt=\"file\" \/><\/p>\n<p>\u70b9\u51fb applicationID \u8fdb\u5165\u67e5\u770b\uff1b<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/02\/image-1612318204323.png\" alt=\"file\" \/><\/p>\n<h4>\u9644\u5f551\uff1acompact \u6761\u4ef6<\/h4>\n<p>Compact thread \u540e\u53f0\u81ea\u52a8\u505a compact\uff0c\u76ee\u524d\u540e\u53f0\u7684 compact \u89e6\u53d1\u6761\u4ef6\u662f\uff1a<\/p>\n<ol>\n<li>\u5f53\u7cfb\u7edf\u4e2d\u6ca1\u6709 base \u7248\u672c\u65f6\uff0c\u5219\u5f53 delta \u7248\u672c\u6570\u91cf\u5927\u4e8e <code>hive.compactor.delta.num.threshold <\/code> \u65f6\u89e6\u53d1 major compact<\/li>\n<li>\u5f53\u7cfb\u7edf\u4e2d\u6709 base \u7248\u672c\u65f6\uff0c\u5219\u5f53\u6240\u6709 delta \u7248\u672c\u7684\u6570\u636e\u91cf\u8fbe\u5230base\u7248\u672c\u6570\u636e\u91cf\u768410%\u6216\u8005delta\u7248\u672c\u4e2a\u6570\u5927\u4e8e<code>hive.compactor.delta.num.threshold.without.base<\/code> \u65f6\u89e6\u53d1 major compact<\/li>\n<\/ol>\n<p>\u8fd9\u4e9b\u89e6\u53d1\u6761\u4ef6\u90fd\u662f\u53ef\u4ee5\u914d\u7f6e\u7684\uff0c\u5206\u522b\u5bf9\u5e94\u4e8e\u53c2\u6570\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5c5e\u6027\u540d<\/th>\n<th style=\"text-align: right;\">\u5c5e\u6027\u503c<\/th>\n<th style=\"text-align: center;\">\u914d\u7f6e\u6587\u4ef6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>hive.compactor.delta.num.threshold.without.base<\/td>\n<td style=\"text-align: right;\">50<\/td>\n<td style=\"text-align: center;\">hive-site.xml<\/td>\n<\/tr>\n<tr>\n<td>hive.compactor.delta.num.threshold<\/td>\n<td style=\"text-align: right;\">10<\/td>\n<td style=\"text-align: center;\">hive-site.xml<\/td>\n<\/tr>\n<tr>\n<td>hive.compactor.delta.pct.threshold<\/td>\n<td style=\"text-align: right;\">0.1<\/td>\n<td style=\"text-align: center;\">hive-site.xml<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u9644\u5f552\uff1acompact \u8d44\u6e90\u8c03\u6574<\/h4>\n<p>\u53c2\u8003\u94fe\u63a5 <a href=\"\/?p=450\" title=\"YARN\u4e0acompact\u4f5c\u4e1a\u4efb\u52a1\u5931\u8d25\">YARN\u4e0acompact\u4f5c\u4e1a\u4efb\u52a1\u5931\u8d25<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 orc \u4e8b\u52a1\u8868\u662f\u4e00\u79cd inceptor \u4e2d\u53ef\u4ee5\u652f\u6301 CRUD \u64cd\u4f5c\u7684\u7684 ORC \u8868\uff0c\u5176\u57fa\u672c\u539f\u7406\u662f\u5bf9\u4e8e ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=5201\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5201","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/5201","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5201"}],"version-history":[{"count":1,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/5201\/revisions"}],"predecessor-version":[{"id":6913,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/5201\/revisions\/6913"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}