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From <>
Subject Re: IndexWriter and IndexReader open at the same time
Date Tue, 09 Aug 2005 18:30:54 GMT
yeah, that was something i wanted to avoid doing but I guess i have no
choice.  thanx for the help

On 8/9/05, Doug Cutting <> wrote:
> Greg Love wrote:
> > In the TheServerSide case study of the book, page 375, they say that
> > they close the IndexWriter and even point out that they did before
> > openning the IndexReader and deleting. So that kinda makes me wonder
> > if i'm safe having an IndexReader with deletions and and IndexWriter
> > with inserts open at the same time (even though my code never does an
> > index modifying operation at the same time because they share a lock
> > in the my code).
> You should close the IndexReader you are using for deletions before
> opening the IndexWriter you use for additions.  For higher throughput,
> queue additions and deletions and process them periodically as batches.
>  If you're concerned about an addition followed by a deletion of the
> same document getting reversed in the queues, then simply check the
> addition queue each time you queue a deletion, and remove any matching
> additions.
> Doug

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