[Xapian-discuss] No position.{DB,baseA,baseB}

[Richard Heycock]

I've just noticed that new indexes no longer have
position.{DB,baseA,baseB} files, all previous indexes (I roll indexes
every week using xapian-compact) have the position files. The index
seems to work but it is returning some odd results, for example if I run
a query with the phrase "machine learning" it mostly returns documents
containing "machine learning" but it also returns documents containing
only learning but not machine. I do not know if the two are related but
it seems to have started happening at about the same time.

The other problem is that I use the positionlist to generate a dynamic
summary which obviously no longer works.

I'm using version 1.2.0 with the ruby bindings and database type is
chert.

I just ran xapian-check on the index and it came back with:

  position:
  Lazily created, and not yet used.

Which I guess answers my immediate question but when is the positionlist
created and more to the point why is it not being created.

Anyway sorry for the slightly rambling email I've just tried to get as
much information down as I can!

rgh
-- 
Richard Heycock

http://topikality.com

+61 (0) 410 646 369
[e]:  rgh at topikality.com
[im]: rgh at topikality.com