Sorting by String uses up lots more RAM than a numeric sort. If you
use a numeric (yet lexicographically orderable) date format (e.g.
YYYYMMDD) you'll see better performance most likely.
Erik
On Feb 24, 2005, at 1:01 PM, Yura Smolsky wrote:
Hello, lucene-user.
I have index with many documents, more than 40 Mil.
Each document has DateField (It is time stamp of document)
I need the most recent results only. I use single instance of
IndexSearcher.
When I perform sorted search on this index:
Sort sort = new Sort();
sort.setSort( new SortField[] { new SortField ("modified",
SortField.STRING, true) } );
Hits hits =
searcher.search(QueryParser.parse("good", "content",
StandardAnalyzer()), sort);
then search speed is not good.
Today I have tried search without "sort by modified", but with sort by
Relevance. Speed was much better!
I think that Sort by DateField is very slow. Maybe I do something
wrong about this kind of sorted search? Can you give me advices about
this?
Thanks.
Yura Smolsky.
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