Yonik Seeley wrote:
On 11/30/06, Chris Hostetter <[EMAIL PROTECTED]> wrote:
: IndexSearchers open. The other ones I "let go" without an explicit
: close() call. The assumption is that the old IndexSearchers "expire",
: that they get garbage collected, as I'm no longer holding references to
: them.
yeah ... that just seems really bad in general, i would try to explicitly
close any searcher your purge from your cache.
Yeah, GC may kick off when memory gets low, but the GC system
unfortunately doesn't know anything about when file descriptors get
low.
I actually ran some stress tests to explore this. Admittedly, they
are very stressful tests (open searcher, do 10 searches, don't close
it, repeat). And I definitely found GC would not kick in "often"
enough because I would quickly exhaust file descriptors.
Then, the scary thing is, when I called System.gc explicitly after
creating each searcher, I still exhausted descriptors, which is really
weird! I think System.gc is not guaranteed to have called all
finalizers before returning, but, I expected the explicit calls to
at least close enough of them to stay under the limit.
I tested this in 1.9.1, 1.9.2, 2.0.0, and trunk, and all of these
versions would run out of descriptors. So I'm at a loss so far on
where the regression is here ...
Mike
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