http://www.perlmonks.org?node_id=809913


in reply to Re: fetchall_arrayref with slice and row count
in thread fetchall_arrayref with slice and row count

Not a bug. So wrong usage. 
while ( $sth->{Active} and
        $rowcache=$sth->fetchall_arrayref({}, $max_rows)
) {
    ...
}

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See the DBI documentation: the last possible fetch in a fetchall will call $sth->finish.

In Section Meditations