This sounds useful indeed! Is there a way we could do it that wouldn't require forking IndexOrDocValuesQuery? E.g. could we have query wrappers that we would use on both the index query and the doc-value query in order to be able to count how many times they have been used? We could add something like that to lucene/sandbox.
On Thu, Jun 10, 2021 at 2:51 PM Egor Moraru <moraru.e...@gmail.com> wrote: > Hi Adrien, > > In this specific use case our data is encoded as points and also is stored > as doc values. > > We use information about which execution path is chosen to decide > if we can get away with storing this data only once and using one of > the queries. > > On Wed, Jun 9, 2021 at 10:39 PM Adrien Grand <jpou...@gmail.com> wrote: > > > FWIW a related PR was just merged that allows to introspect query > > execution: https://issues.apache.org/jira/browse/LUCENE-9965. It's > > different from your use-case though in that it is debugging information > for > > a single query rather than statistical information across lots of user > > queries (and the approach on that other issue makes things much slower so > > you wouldn't like to enable it in production). > > > > Out of curiosity, what are you doing with this information about which > > execution path is chosen? > > > > On Wed, Jun 9, 2021 at 2:14 PM Egor Moraru <moraru.e...@gmail.com> > wrote: > > > > > Hi, > > > > > > At my current project we wanted to monitor for a specific field the > > > fraction of indexed vs doc values queries executed by > > > IndexOrDocValuesQuery. > > > > > > We ended up forking IndexOrDocValuesQuery and passing a listener that > > > is notified when the query execution path is decided. > > > > > > Do you think this is something the community might be interested in? > > > > > > Kind regards, > > > Egor Moraru. > > > > > > > > > -- > > Adrien > > > > > -- > > Kind regards, > Egor Moraru. > -- Adrien
