Karl Wettin wrote:
30 aug 2007 kl. 22.50 skrev Andrzej Bialecki:
I think this is possible to achieve by using a FilterIndexReader,
which keeps a map of updated documents, and re-maps old doc ids to the
new ones on the fly.
From time to time I'd like to optimize the "aux" index to get rid of
deleted docs. At this time I need to figure out how to preserve the
old->new mapping during the optimization.
Perhaps my experiment in LUCENE-879 could be of interest.
Thanks for the pointer. As far as I understand the patch, this doesn't
help me, because I want to remap a newly added document so that it
appears to be at the old position. Eventually, when the index becomes
full of deletions, I want to optimize it, i.e. get rid of dead weight
completely.
Please correct me if I'm wrong, but your patch replaces deleted
documents with empty documents, which over time leads to an unchecked
growth of the index, which is hardly equivalent to optimize() ... so,
the main benefit I can see from your patch is that it fixes the tf / idf
to account for deleted docs.
--
Best regards,
Andrzej Bialecki <><
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