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Merge pull request #8563 from annando/issue-8550 

Issue 8550: Check for a good table_definition_cache value
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Hypolite Petovan 2020-05-05 12:26:28 -04:00 committed by GitHub
parent c1460ee3e8 d67b9cb693
commit 24713e289e
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3 changed files with 33 additions and 0 deletions
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11
src/Database/DBA.php
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@ -741,6 +741,17 @@ class DBA
return DI::dba()->processlist();
}
/**
* Fetch a database variable
*
* @param string $name
* @return string content
*/
public static function getVariable(string $name)
{
return DI::dba()->getVariable($name);
}
/**
* Checks if $array is a filled array with at least one entry.
*

12
src/Database/Database.php
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@ -1645,6 +1645,18 @@ class Database
return (["list" => $statelist, "amount" => $processes]);
}
/**
* Fetch a database variable
*
* @param string $name
* @return string content
*/
public function getVariable(string $name)
{
$result = $this->fetchFirst("SHOW GLOBAL VARIABLES WHERE `Variable_name` = ?", $name);
return $result['Value'] ?? null;
}
/**
* Checks if $array is a filled array with at least one entry.
*

10
src/Module/Admin/Summary.php
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@ -55,6 +55,16 @@ class Summary extends BaseAdmin
$warningtext[] = DI::l10n()->t('Your DB still runs with InnoDB tables in the Antelope file format. You should change the file format to Barracuda. Friendica is using features that are not provided by the Antelope format. See <a href="%s">here</a> for a guide that may be helpful converting the table engines. You may also use the command <tt>php bin/console.php dbstructure toinnodb</tt> of your Friendica installation for an automatic conversion.<br />', 'https://dev.mysql.com/doc/refman/5.7/en/innodb-file-format.html');
}
// Avoid the database error 1615 "Prepared statement needs to be re-prepared", see https://github.com/friendica/friendica/issues/8550
$table_definition_cache = DBA::getVariable('table_definition_cache');
$table_open_cache = DBA::getVariable('table_open_cache');
if (!empty($table_definition_cache) && !empty($table_open_cache)) {
$suggested_definition_cache = min(400 + round($table_open_cache / 2, 1), 2000);
if ($suggested_definition_cache > $table_definition_cache) {
$warningtext[] = DI::l10n()->t('Your table_definition_cache is too low (%d). This can lead to the database error "Prepared statement needs to be re-prepared". Please set it at least to %d (or -1 for autosizing). See <a href="%s">here</a> for more information.<br />', $table_definition_cache, $suggested_definition_cache, 'https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_table_definition_cache');
}
}
// Check if github.com/friendica/master/VERSION is higher then
// the local version of Friendica. Check is opt-in, source may be master or devel branch
if (DI::config()->get('system', 'check_new_version_url', 'none') != 'none') {