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From "Dedian Guo" <>
Subject Re: Question about RemoteSearchable, RMI and queries in parallel
Date Fri, 14 Apr 2006 04:06:09 GMT
The simplese way is to create indexsearcher instance for each searching

or create indexsearcher for each index folder (such as indexX, indexY,...),
then write a function to choose correct indexsearcher for related searching

On 4/12/06, wenjie zheng <> wrote:
> My question is a little bit long. Thanks for your patience.
> I am working on project which requires remote searching ability. So I use
> RMI and RemoteSearchable class. Here is the system structure:
> Server A has all the indices on it and the RemoteSearchable object running
> on it. Server B accepts queries and use ParallelMultiSearcher  and RMI to
> search the indices on Server A.
> There are many indices on Server A, based on query I received, I choose
> different index to search from .
> For example, if I the query is from X, we will search indexX; if the query
> is from Y, we will search indexY. In order to do that, I changed the
> Searchable interface a little bit by adding function load(String folder)
> and
> implement it in all the subclasses. What load() does is to close the
> underlining reader of the first index and open the reader for the second
> index.
> So here is the problem I bumped into. When there are more than one queries
> coming at the same time and I wanted to process them in parallel,  the
> load() function called by the second query may accidently close the the
> reader of the first index, while searching on the first index is not
> finished yet.
> So, do I have to queue the queries up and execute them one after the
> other?
> Or do I have other options?
> Thanks,
> Wenjie

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