[Koha] Ghost records

[Jared Camins-Esakov]

Tomas,

> Our problem was :
> > melm 001        local-number,local-number:n
> > ......
> > melm 035$a      local-number,local-number:n
> > We had two fields indexed in "local-number" and we had "ghost entries".
> > We have corrected in :
> > melm 001        local-number,local-number:n
> > ......
> > melm 035$a      identifier-other,identifier-other:n
> > Reindex and it was the end of the fabulous story of ghost entries.
>
> Perhaps its just out of my knowledge's scope, by I don't see the
> problem of having two different fields indexed under the same name, I
> mean, I'd think both would match the same record and thus not be shown
> twice. I'd rather think of a weird coincidence. I'm sorry if my
> confusion just makes the situation more obscure.
>

The issue here is that the local-number index has "magic" properties. I
don't really understand how Zebra works, but I do know that every entry in
the local-number index is considered a "separate" record. So if record has
two fields that appear in the local-number index, the Zebra index will store
two copies of the record (this is where the search results in Koha come
from, not from the database). At some point I will submit a patch changing
the suggestion for the 035 index, since uncommenting the "melm 035" line as
it stands now in the MARC21 record.abs is pretty much guaranteed to corrupt
your Zebra indexes.

Regards,
Jared

-- 
Jared Camins-Esakov
Freelance bibliographer, C & P Bibliography Services, LLC
(phone) +1 (917) 727-3445
(e-mail) jcamins at cpbibliography.com
(web) http://www.cpbibliography.com/
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