Inconsistent query results
Kirill A. Shutemov
kirill at shutemov.name
Fri Mar 10 01:56:28 PST 2017
On Fri, Mar 10, 2017 at 02:56:03AM +0000, Olly Betts wrote:
> On Wed, Mar 08, 2017 at 10:32:56PM -0400, David Bremner wrote:
> > "Kirill A. Shutemov" <kirill at shutemov.name> writes:
> > > I found that on particular queries notmuch return different results if run
> > > the query few times. Re-initialing the query or db doesn't help.
> >
> > Thanks for the report. I don't yet understand where the bug is, but I
> > think it's safe to say it's not in your code. I made a somewhat simpler
> > test case that displays the same problem (at the end).
>
> It's a bug in Xapian - I've committed a fix to master (commit
> fa12a83957e97349aa6e2a6c0896faf210dfe4b4) which I'll backport for 1.4.4 and
> 1.2.25 (it also affects 1.2.x).
>
> To trigger it you need an AND operator which is unweighted (e.g. being on the
> right side of AND_NOT here) with a subquery which uses the passed max weight
> value (the obvious case is another operator, OR in this case).
>
> (David already confirmed on IRC that the fix applied solves this for him.)
Verified. Thanks!
--
Kirill A. Shutemov
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