Re: OutOfMemoryError with boolean queries

[Otis Gospodnetic <ot...@yahoo.com>]

Robert,

I'm moving this to lucene-user, which is a more appropriate list for
this type of a problem.
You are not saying whether you are using some of those handy -X (-Xms
-Xmx) command line switches when you invoke your application that dies
with OutOfMemoryError.
If you are not, try that, it may help.  I recall a few other people
reporting the same problem and using -Xms and -Xmx solved their
problem.

If your machine doesn't have the RAM it needs this won't help, of
course :)

Otis


--- Robert_Wennstr�m <ro...@agent25.se> wrote:
> Hi,
> 
> I'm experiencing OutOfMemoryErrors when searching using many logical
> ANDs
> combined with prefix queries.
> The reason is clearly too many returned hits waiting for combined
> evaluation.
> 
> I was wondering if there are any thoughts of changing the search
> approach to
> something less memory consuming.
> This is quite a big problem even with small sets of documents.
> 
> Example:
> my 55000 document index runs out of memory when searching for  a* AND
> e*
> 
> Could you estimate the difficulty to change the behaviour to search
> for e* in
> just the hits matching a* ?
> I'm about to put a BitSet at the innermost hit collection to sort out
> AND-clauses that hasn't been matched by previous AND-clauses.
> Is there a better approach ?
> 
> 
> Thanks for a great java project guys
> 
> ____________________________________________
> Robert Wennstr�m [developer, netadmin]
> robert -at- agent25.com
> www.agent25.com
> 
> 
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