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From "Uwe Schindler" <>
Subject RE: MultiPhraseQuery slowing down over time in Lucene 3.1
Date Tue, 03 May 2011 11:47:25 GMT
> Hi,
> 2011/5/3 Michael McCandless <>:
> > I feel like we are back to Basic ;)
> >
> > If you keep running line 40 over and over on the same memory index, do
> > you see a slowdown?
> Yes. I've tested running same query list (~3,5 k queries) on the same
> MemoryIndex instance and after a while iterations get slower and slower.
> Same thing happens when running queries on the same instance of RAMDir
> based index holding only one doc. But, if I remove MultiPhraseQuery type
> queries from the query list then speed of execution is the same, meaning
> execution time for other queries is constant and it doesn't grow over time
> it would be expected).
> I've tried to run tests with the latest 3.1 branch as Uwe suggested
> and built today) and slowdown is still present when MultiPhraseQuery type
> of queries are included (not removed from the query list).

Thanks! Then this is another issue. Seems to be some memory leak in this
query? That's completely strange. Can you open an issue?

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