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From Michael McCandless <>
Subject Re: StressTest: Document not guaranteed to be found after write and commit
Date Wed, 25 Nov 2009 19:05:16 GMT
Indeed I see this test failing too!  On first look the test seems correct.

Can you open an issue & attach this as a patch?  Thanks.


On Wed, Nov 25, 2009 at 12:30 PM, Sanne Grinovero
<> wrote:
> Hello,
> I developed a stress test to assert that a new document containing a
> specific term "X" is always found after a commit on the IndexWriter.
> This works most of the time, but it fails under load in rare occasions.
> I'm testing with 40 Threads, both with a SerialMergeScheduler and a
> ConcurrentMergeScheduler, all sharing a common IndexWriter.
> Attached testcase is using a RAMDirectory only, but I verified a
> FSDirectory behaves in the same way so I don't believe it's the
> Directory implementation or the MergeScheduler.
> This test is slow, so I don't consider it a functional or unit test.
> It might give false positives: it doesn't always fail, sorry I
> couldn't find out how to make it more likely to happen, besides
> scheduling it to run for a longer time.
> Could someone please try it, and suggest if my test is wrong or if I
> should open a new issue?
> The patch applies to 2.9.1, I've experienced same behavior on 2.4.1.
> Best regards,
> Sanne Grinovero
> P.S. congratulations with the release of 3.0.0 :-)
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