MariaDB "default_tmp_storage_engine" System's Variable is not clear enough.
- By default it has a value of NULL. ¿What does that mean? ¿That the default server's engine for temporary tables (CREATE TEMPORARY TABLE) is that from "default_storage_engine"? Documentation is not clear enough.
- Also, when choosing "Memory" Engine for tables created via "CREATE TEMPORARY TABLE", when exceeded "max_heap_table_size", ¿Are tables automatically converted to Aria Engine? (As it happens with internal temporary tables)
SET @@default_tmp_storage_engine = memory;
|
Thank you,
Juan
{"report":{"fcp":1167.5999999046326,"ttfb":356.90000009536743,"pageVisibility":"visible","entityId":60149,"key":"jira.project.issue.view-issue","isInitial":true,"threshold":1000,"elementTimings":{},"userDeviceMemory":8,"userDeviceProcessors":64,"apdex":0.5,"journeyId":"5de775f0-4a69-443b-813e-e25dfd6f40a6","navigationType":0,"readyForUser":1223,"redirectCount":0,"resourceLoadedEnd":1410.9000000953674,"resourceLoadedStart":363.40000009536743,"resourceTiming":[{"duration":115.40000009536743,"initiatorType":"link","name":"https://jira.mariadb.org/s/2c21342762a6a02add1c328bed317ffd-CDN/lu2cib/820016/12ta74/0a8bac35585be7fc6c9cc5a0464cd4cf/_/download/contextbatch/css/_super/batch.css","startTime":363.40000009536743,"connectEnd":0,"connectStart":0,"domainLookupEnd":0,"domainLookupStart":0,"fetchStart":363.40000009536743,"redirectEnd":0,"redirectStart":0,"requestStart":0,"responseEnd":478.80000019073486,"responseStart":0,"secureConnectionStart":0},{"duration":115.2999997138977,"initiatorType":"link","name":"https://jira.mariadb.org/s/7ebd35e77e471bc30ff0eba799ebc151-CDN/lu2cib/820016/12ta74/494e4c556ecbb29f90a3d3b4f09cb99c/_/download/contextbatch/css/jira.browse.project,project.issue.navigator,jira.view.issue,jira.general,jira.global,atl.general,-_super/batch.css?agile_global_admin_condition=true&jag=true&jira.create.linked.issue=true&slack-enabled=true&whisper-enabled=true","startTime":363.80000019073486,"connectEnd":0,"connectStart":0,"domainLookupEnd":0,"domainLookupStart":0,"fetchStart":363.80000019073486,"redirectEnd":0,"redirectStart":0,"requestStart":0,"responseEnd":479.09999990463257,"responseStart":0,"secureConnectionStart":0},{"duration":172.19999980926514,"initiatorType":"script","name":"https://jira.mariadb.org/s/0917945aaa57108d00c5076fea35e069-CDN/lu2cib/820016/12ta74/0a8bac35585be7fc6c9cc5a0464cd4cf/_/download/contextbatch/js/_super/batch.js?locale=en","startTime":363.90000009536743,"connectEnd":363.90000009536743,"connectStart":363.90000009536743,"domainLookupEnd":363.90000009536743,"domainLookupStart":363.90000009536743,"fetchStart":363.90000009536743,"redirectEnd":0,"redirectStart":0,"requestStart":363.90000009536743,"responseEnd":536.0999999046326,"responseStart":536.0999999046326,"secureConnectionStart":363.90000009536743},{"duration":422.5,"initiatorType":"script","name":"https://jira.mariadb.org/s/2d8175ec2fa4c816e8023260bd8c1786-CDN/lu2cib/820016/12ta74/494e4c556ecbb29f90a3d3b4f09cb99c/_/download/contextbatch/js/jira.browse.project,project.issue.navigator,jira.view.issue,jira.general,jira.global,atl.general,-_super/batch.js?agile_global_admin_condition=true&jag=true&jira.create.linked.issue=true&locale=en&slack-enabled=true&whisper-enabled=true","startTime":364.09999990463257,"connectEnd":364.09999990463257,"connectStart":364.09999990463257,"domainLookupEnd":364.09999990463257,"domainLookupStart":364.09999990463257,"fetchStart":364.09999990463257,"redirectEnd":0,"redirectStart":0,"requestStart":364.09999990463257,"responseEnd":786.5999999046326,"responseStart":786.5999999046326,"secureConnectionStart":364.09999990463257},{"duration":426.19999980926514,"initiatorType":"script","name":"https://jira.mariadb.org/s/a9324d6758d385eb45c462685ad88f1d-CDN/lu2cib/820016/12ta74/c92c0caa9a024ae85b0ebdbed7fb4bd7/_/download/contextbatch/js/atl.global,-_super/batch.js?locale=en","startTime":364.40000009536743,"connectEnd":364.40000009536743,"connectStart":364.40000009536743,"domainLookupEnd":364.40000009536743,"domainLookupStart":364.40000009536743,"fetchStart":364.40000009536743,"redirectEnd":0,"redirectStart":0,"requestStart":364.40000009536743,"responseEnd":790.5999999046326,"responseStart":790.5999999046326,"secureConnectionStart":364.40000009536743},{"duration":426.3999996185303,"initiatorType":"script","name":"https://jira.mariadb.org/s/d41d8cd98f00b204e9800998ecf8427e-CDN/lu2cib/820016/12ta74/1.0/_/download/batch/jira.webresources:calendar-en/jira.webresources:calendar-en.js","startTime":364.7000002861023,"connectEnd":364.7000002861023,"connectStart":364.7000002861023,"domainLookupEnd":364.7000002861023,"domainLookupStart":364.7000002861023,"fetchStart":364.7000002861023,"redirectEnd":0,"redirectStart":0,"requestStart":364.7000002861023,"responseEnd":791.0999999046326,"responseStart":791.0999999046326,"secureConnectionStart":364.7000002861023},{"duration":426.69999980926514,"initiatorType":"script","name":"https://jira.mariadb.org/s/d41d8cd98f00b204e9800998ecf8427e-CDN/lu2cib/820016/12ta74/1.0/_/download/batch/jira.webresources:calendar-localisation-moment/jira.webresources:calendar-localisation-moment.js","startTime":364.80000019073486,"connectEnd":364.80000019073486,"connectStart":364.80000019073486,"domainLookupEnd":364.80000019073486,"domainLookupStart":364.80000019073486,"fetchStart":364.80000019073486,"redirectEnd":0,"redirectStart":0,"requestStart":364.80000019073486,"responseEnd":791.5,"responseStart":791.5,"secureConnectionStart":364.80000019073486},{"duration":427.90000009536743,"initiatorType":"link","name":"https://jira.mariadb.org/s/b04b06a02d1959df322d9cded3aeecc1-CDN/lu2cib/820016/12ta74/a2ff6aa845ffc9a1d22fe23d9ee791fc/_/download/contextbatch/css/jira.global.look-and-feel,-_super/batch.css","startTime":364.90000009536743,"connectEnd":0,"connectStart":0,"domainLookupEnd":0,"domainLookupStart":0,"fetchStart":364.90000009536743,"redirectEnd":0,"redirectStart":0,"requestStart":0,"responseEnd":792.8000001907349,"responseStart":0,"secureConnectionStart":0},{"duration":426.90000009536743,"initiatorType":"script","name":"https://jira.mariadb.org/rest/api/1.0/shortcuts/820016/47140b6e0a9bc2e4913da06536125810/shortcuts.js?context=issuenavigation&context=issueaction","startTime":365.09999990463257,"connectEnd":365.09999990463257,"connectStart":365.09999990463257,"domainLookupEnd":365.09999990463257,"domainLookupStart":365.09999990463257,"fetchStart":365.09999990463257,"redirectEnd":0,"redirectStart":0,"requestStart":365.09999990463257,"responseEnd":792,"responseStart":792,"secureConnectionStart":365.09999990463257},{"duration":427.69999980926514,"initiatorType":"link","name":"https://jira.mariadb.org/s/3ac36323ba5e4eb0af2aa7ac7211b4bb-CDN/lu2cib/820016/12ta74/d176f0986478cc64f24226b3d20c140d/_/download/contextbatch/css/com.atlassian.jira.projects.sidebar.init,-_super,-project.issue.navigator,-jira.view.issue/batch.css?jira.create.linked.issue=true","startTime":365.30000019073486,"connectEnd":0,"connectStart":0,"domainLookupEnd":0,"domainLookupStart":0,"fetchStart":365.30000019073486,"redirectEnd":0,"redirectStart":0,"requestStart":0,"responseEnd":793,"responseStart":0,"secureConnectionStart":0},{"duration":427.30000019073486,"initiatorType":"script","name":"https://jira.mariadb.org/s/5d5e8fe91fbc506585e83ea3b62ccc4b-CDN/lu2cib/820016/12ta74/d176f0986478cc64f24226b3d20c140d/_/download/contextbatch/js/com.atlassian.jira.projects.sidebar.init,-_super,-project.issue.navigator,-jira.view.issue/batch.js?jira.create.linked.issue=true&locale=en","startTime":365.40000009536743,"connectEnd":365.40000009536743,"connectStart":365.40000009536743,"domainLookupEnd":365.40000009536743,"domainLookupStart":365.40000009536743,"fetchStart":365.40000009536743,"redirectEnd":0,"redirectStart":0,"requestStart":365.40000009536743,"responseEnd":792.7000002861023,"responseStart":792.7000002861023,"secureConnectionStart":365.40000009536743},{"duration":830.8999996185303,"initiatorType":"script","name":"https://jira.mariadb.org/s/d41d8cd98f00b204e9800998ecf8427e-CDN/lu2cib/820016/12ta74/1.0/_/download/batch/jira.webresources:bigpipe-js/jira.webresources:bigpipe-js.js","startTime":366.2000002861023,"connectEnd":366.2000002861023,"connectStart":366.2000002861023,"domainLookupEnd":366.2000002861023,"domainLookupStart":366.2000002861023,"fetchStart":366.2000002861023,"redirectEnd":0,"redirectStart":0,"requestStart":366.2000002861023,"responseEnd":1197.0999999046326,"responseStart":1197.0999999046326,"secureConnectionStart":366.2000002861023},{"duration":1044.5999999046326,"initiatorType":"script","name":"https://jira.mariadb.org/s/d41d8cd98f00b204e9800998ecf8427e-CDN/lu2cib/820016/12ta74/1.0/_/download/batch/jira.webresources:bigpipe-init/jira.webresources:bigpipe-init.js","startTime":366.30000019073486,"connectEnd":366.30000019073486,"connectStart":366.30000019073486,"domainLookupEnd":366.30000019073486,"domainLookupStart":366.30000019073486,"fetchStart":366.30000019073486,"redirectEnd":0,"redirectStart":0,"requestStart":366.30000019073486,"responseEnd":1410.9000000953674,"responseStart":1410.9000000953674,"secureConnectionStart":366.30000019073486},{"duration":508,"initiatorType":"xmlhttprequest","name":"https://jira.mariadb.org/rest/webResources/1.0/resources","startTime":687.8000001907349,"connectEnd":687.8000001907349,"connectStart":687.8000001907349,"domainLookupEnd":687.8000001907349,"domainLookupStart":687.8000001907349,"fetchStart":687.8000001907349,"redirectEnd":0,"redirectStart":0,"requestStart":687.8000001907349,"responseEnd":1195.8000001907349,"responseStart":1195.8000001907349,"secureConnectionStart":687.8000001907349},{"duration":274,"initiatorType":"script","name":"https://www.google-analytics.com/analytics.js","startTime":1141.5,"connectEnd":0,"connectStart":0,"domainLookupEnd":0,"domainLookupStart":0,"fetchStart":1141.5,"redirectEnd":0,"redirectStart":0,"requestStart":0,"responseEnd":1415.5,"responseStart":0,"secureConnectionStart":0}],"fetchStart":0,"domainLookupStart":0,"domainLookupEnd":0,"connectStart":0,"connectEnd":0,"requestStart":205,"responseStart":357,"responseEnd":359,"domLoading":361,"domInteractive":1505,"domContentLoadedEventStart":1505,"domContentLoadedEventEnd":1552,"domComplete":1871,"loadEventStart":1871,"loadEventEnd":1872,"userAgent":"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)","marks":[{"name":"bigPipe.sidebar-id.start","time":1474.4000000953674},{"name":"bigPipe.sidebar-id.end","time":1475.4000000953674},{"name":"bigPipe.activity-panel-pipe-id.start","time":1475.4000000953674},{"name":"bigPipe.activity-panel-pipe-id.end","time":1476.5},{"name":"activityTabFullyLoaded","time":1581.5999999046326}],"measures":[],"correlationId":"9b83af43be683","effectiveType":"4g","downlink":10,"rtt":0,"serverDuration":92,"dbReadsTimeInMs":10,"dbConnsTimeInMs":18,"applicationHash":"9d11dbea5f4be3d4cc21f03a88dd11d8c8687422","experiments":[]}}
Documentation updated. The engine type will be taken from default_storage_engine if the setting is NULL, and CREATE TEMPORARY tables of type Memory are not converted.