In Lucene, a Term Vector is a specific thing that is stored on disk
when creating a Document and Field. It is optional and off by
default. It is separate from being able to get the term frequencies
for all the docs in a specific field. The former is decided at
indexing time and there is no way to remove it w/o reindexing.
Furthermore, it is not loaded into memory by the IndexReader. Term
Frequencies are accessed via the TermDocs.
Can you clarify a bit more what you are looking to do? Perhaps some
sample code will help demonstrate what you'd like to turn off, as I am
not clear on your question.
Cheers,
Grant
On Jun 30, 2009, at 3:37 AM, Ganesh wrote:
At the end of the day, I used to build the stats of top indexed
terms. I enabled term frequency for the single field. It is working
fine. I could able to get the top terms and its frequencies. It
consumes huge amount of RAM. My index size is 5 GB and has 8 million
records. If i didn't enable term vector then i could do index up to
17 GB with 40 million records.
When IndexReader/ Searcher is opened, whether it will load all term
vector frequncies?
Consider i have enabled this option and indexed say 5GB, Now i don't
want the Reader / Searcher to load term vector. I want to switch off
this feature? Is that possible without re-indexing?
Regards
Ganesh
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