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From Shay Banon <>
Subject Re: Lucene 3.0.3 Release Date
Date Fri, 29 Oct 2010 18:32:38 GMT
For a system that is long running and commits every X time this can prove to
be problematic eventually. And then its a matter of frequency. But, as this
is a recommended design pattern for lucene (commit the IndexWriter to
persist you changes periodically), its quite severe. Seems like the only
solution is to close and open the writer, which is a shame. It looks like
the backport is quite big and more complex, but if not, then a notice on
CHANGES should be made so people will be aware of this behavior?

On Fri, Oct 29, 2010 at 7:35 PM, Michael McCandless <> wrote:

> On Fri, Oct 29, 2010 at 9:01 AM, Tim Smith <> wrote:
> >  I suggest backporting lucene-2328 as well
> >
> > the memory leak grows based on the number of commits
> > if you are doing extremely frequent commits, the memory leak becomes a
> > sizable loss that cannot be reclaimed without restarting and may require
> > restarting the vm on a daily basis
> Closing & opening a new IW also reclaims the memory?
> How frequently do you commit?
> Mike
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