Since reindexing releases the DB handle every indexBatchSize bytes,
we need to ensure we keep the journal in-memory when reopening
the DB since this is throwaway data.
$self->{dbh} and die 'BUG: tmp_clone dbh not prepared for parent';
defined($self->{filename}) or die 'BUG: {filename} not defined';
$self->{dbh} = PublicInbox::Over::dbh_new($self, 2);
+ $self->{dbh}->do('PRAGMA journal_mode = MEMORY');
}
sub atfork_prepare {