search: add note about SCHEMA_VERSION 15

--reindex has gotten better over the years, and having parallel
Xapian DB directories would exceed all available disk space for
some users with giant inboxes.

diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index 06a84c340e4cd8a5502018801f5b689b6149d70c..88c8dc70e17c3bedf3883f07555894b6c54eb7c3 100644 (file)
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -54,6 +54,9 @@ use constant {
        # 13 - fix threading for empty References/In-Reply-To
        #      (commit 83425ef12e4b65cdcecd11ddcb38175d4a91d5a0)
        # 14 - fix ghost root vivification
        # 13 - fix threading for empty References/In-Reply-To
        #      (commit 83425ef12e4b65cdcecd11ddcb38175d4a91d5a0)
        # 14 - fix ghost root vivification

+       # 15 - see public-inbox-v2-format(5)
+       #      further bumps likely unnecessary, we'll suggest in-place
+       #      "--reindex" use for further fixes and tweaks

        SCHEMA_VERSION => 15,
 };
 
        SCHEMA_VERSION => 15,
 };