After upgrade Mediawiki to 1.29, the runjobs.php quit after only few lines of update with a single line of "killed".
No more error message even if set all debug setting to true. How to debug this problem?
$wgShowExceptionDetails = true;
$wgShowDBErrorBacktrace = true;
$wgShowSQLErrors = true;
$wgDebugDumpSql = true;
$wgDebugToolbar = true;