init+index: support --skip-docdata for Xapian

Since we no longer read document data from Xapian, allow users
to opt-out of storing it.

This breaks compatibility with previous releases of
public-inbox, but gives us a ~1.5% space savings on Xapian
storage (and associated I/O and page cache pressure reduction).

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/SearchIdxShard.pm b/lib/PublicInbox/SearchIdxShard.pm
index 59b36087..20077e08 100644
--- a/lib/PublicInbox/SearchIdxShard.pm
+++ b/lib/PublicInbox/SearchIdxShard.pm
@@ -16,7 +16,7 @@ sub new {
         my $self = $class->SUPER::new($ibx, 1, $shard);
         # create the DB before forking:
         $self->idx_acquire;
-        $self->set_indexlevel;
+        $self->set_metadata_once;
         $self->idx_release;
         $self->spawn_worker($v2w, $shard) if $v2w->{parallel};
         $self;