Hi Mark, If queries taking 10 (or however many) seconds isn't acceptable, then either you need to a) prevent or optimize those queries, b) improve the performance of your index, c) use timeAllowed and accept that queries taking that long may fail or provide incomplete results, or d) a combination of the above.
If you use timeAllowed then you have to accept the possibility that a query won't complete within the time allowed. Therefore you need to be able to deal with the possibility of the query failing or of it returning incomplete results. In our use of Solr, if a query exceeds timeAllowed we always treat it as a failure, even if it might have returned partial results, and return a 5xx response from our own server since we don't want to serve incomplete results ever. But you could attempt to return whatever results you do receive, perhaps with a warning message for your client indicating what happened. On Wed, 16 Sep 2020 at 02:05, Mark Robinson <mark123lea...@gmail.com> wrote: > Thanks Dominique! > So is this parameter generally recommended or not. I wanted to try with a > value of 10s. We are not using it now. > My goal is to prevent a query from running more than 10s on the solr server > and choking it. > > What is the general recommendation. > > Thanks! > Mark > > On Tue, Sep 15, 2020 at 5:38 PM Dominique Bejean < > dominique.bej...@eolya.fr> > wrote: > > > Hi, > > > > 1. Yes, your analysis is correct > > > > 2. Yes, it can occurs too with very slow query. > > > > Regards > > > > Dominique > > > > Le mar. 15 sept. 2020 à 15:14, Mark Robinson <mark123lea...@gmail.com> a > > écrit : > > > > > Hi, > > > > > > When in a sample query I used "timeAllowed" as low as 10mS, I got value > > for > > > > > > "numFound" as say 2000, but no docs were returned. But when I increased > > the > > > > > > value for timeAllowed to be in seconds, never got this scenario. > > > > > > > > > > > > I have 2 qns:- > > > > > > 1. Why does numFound have a value like say 2000 or even 6000 but no > > > > > > documents actually returned. During document collection is calculation > of > > > > > > numFound done first and doc collection later?. Is doc list empty > > because,by > > > > > > the time doc collection started the timeAllowed cut off took effect? > > > > > > > > > > > > 2. If I give timeAllowed a value say, 10s or above do you think the > above > > > > > > scenario of valid count displayed in numFound, but doc list empty can > > ever > > > > > > occur still, as there is more time before cut-off to retrieve at least > > one > > > > > > doc ? > > > > > > > > > > > > Thanks! > > > > > > Mark > > > > > > > > >
