fixup! fix(db): also chunk MariaDB deletes

lib/Data.php

@@ -24,14 +24,15 @@
 
 namespace OCA\Activity;
 
-use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
+use Doctrine\DBAL\Platforms\MySQLPlatform;
 use OCA\Activity\Filter\AllFilter;
 use OCP\Activity\IEvent;
 use OCP\Activity\IExtension;
 use OCP\Activity\IFilter;
 use OCP\Activity\IManager;
 use OCP\DB\QueryBuilder\IQueryBuilder;
 use OCP\IDBConnection;
+use Psr\Log\LoggerInterface;
 
 /**
  * @brief Class for managing the data in the activities
@@ -387,9 +388,11 @@ public function deleteActivities($conditions) {
 		// Add galera safe delete chunking if using mysql
 		// Stops us hitting wsrep_max_ws_rows when large row counts are deleted
 		$platform = $this->connection->getDatabasePlatform();
-		if ($platform instanceof AbstractMySQLPlatform) {
+		if ($platform instanceof MySQLPlatform) {
+			$logger = \OC::$server->get(LoggerInterface::class);
+			$logger->log('Chunking deletes for MySQLPlatform');
 			// Then use chunked delete
-			$max = 100000;
+			$max = 10000;
 			$delete->setMaxResults($max);
 			do {
 				$deleted = $delete->executeStatement();