Thanks Colvin! All the responses were helpful. Best Mark
On Wed, Sep 16, 2020 at 4:06 AM Colvin Cowie <colvin.cowie....@gmail.com> wrote: > 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 > > > > > > > > > > > > > >
