TYPO3 Core

if you try to publish a page and i.e a sql error occurs there will be retain a lockfile for this page so that even if the error is removed the file stays locked in PATH_site.'typo3temp/swap_locking/ an can't be published

\typo3\sysext\version\class.tx_version_tcemain.php
...
// Lock file name:
$lockFileName = PATH_site.'typo3temp/swap_locking/' . $table . ':' . $id . '.ser';

if (!@is_file($lockFileName) )    {
...

After deleting the lockfile in PATH_site.'typo3temp/swap_locking/ everything works fine again

Is ist for example possible to add a max lifetime to the lockfile and request in like
if (@is_file($lockFileName) && $maxLockFileLifetime > now() ) {