/admin/ping at least communicates _intent_ (purpose) but any way, it's trivial to just register a SearchHandler to accomplish exactly that if a user wishes.
On Thu, Sep 3, 2026 at 3:41 PM Jason Gerlowski <[email protected]> wrote: > > Right now however, Ping is the only way to validate a core is giving > searches. > > Is it? Couldn't a user just use "/select" for this? > > > Healthcheck doesn’t do that, > > It doesn't run an actual query, but you can have it check on the > health of cores via its 'requireHealthyCores' param. I get that this > isn't quite the same thing as getting a 200 OK on a query, but well, > as I said above "/select" can serve for that usecase just fine > seemingly? > > > +1 > > Awesome - given what seems like consensus here I've created a JIRA > ticket (https://issues.apache.org/jira/browse/SOLR-18417) and will > make sure this gets done soon! > > Best, > > Jason > > On Sun, Aug 30, 2026 at 9:32 AM Eric Pugh > <[email protected]> wrote: > > > > This would be a nice opportunity to let the existing HealthcheckHandler > shine! It is buried in our ref guide: > https://solr.apache.org/guide/solr/latest/configuration-guide/implicit-requesthandlers.html > and not used in our Solr Admin UI. > > > > We would need to remove the ping request handler form Solr Admin and add > Healthcheck, but that is an easy change. > > > > Right now however, Ping is the only way to validate a core is giving > searches. Healthcheck doesn’t do that, so if we wanted it to also check > that a collection/core was available, then we would need to add that or we > lose capability. > > > > So +1 on the deprecation, and maybe an opportunity to lay out a nice > JIRA with what improvements to HealthcheckHandler are needed? > > > > > > > > > > > On Aug 30, 2026, at 8:12 AM, David Smiley <[email protected]> wrote: > > > > > > +1 > > > > > > On Sun, Aug 30, 2026 at 7:22 AM Jason Gerlowski <[email protected] > > > > > wrote: > > > > > >> Solr has an API called the "PingRequestHandler" > > >> (/solr/<coreName>/admin/ping). This API is meant to serve as a > > >> load-balancer healthcheck, but it has a few surprising quirks. Most > > >> significantly it operates at the core level rather than the > > >> node-level, so it requires load-balancers be aware of Solr's topology > > >> to some extent (which of course, very few off-the-shelf load balancers > > >> are.) > > >> > > >> In my experience, PingRequestHandler has long been superseded by less > > >> idiosyncratic alternatives like the HealthcheckHandler or even the > > >> SystemInfoHandler. > > >> > > >> **I propose we deprecate PingRequestHandler in 10.x and remove in > > >> 11**, unless there's a compelling use-case that someone can bring to > > >> our attention. Not only is it needless maintenance burden, but > > >> PingRequestHandler also has some security baggage (i.e. "qt" usage) > > >> that makes it slightly risky to keep around if it's not providing > > >> value. > > >> > > >> Absent any use-cases for it that I'm not seeing currently, I'll create > > >> a ticket for this in a few days and start working towards > > >> deprecation+removal. Let me know what you guys think! Does anyone > > >> here use PingRequestHandler in a way that couldn't be replaced by > > >> HealthcheckHandler or normal querying? > > >> > > >> Best, > > >> > > >> Jason > > >> > > >> --------------------------------------------------------------------- > > >> To unsubscribe, e-mail: [email protected] > > >> For additional commands, e-mail: [email protected] > > >> > > >> > > > > Disclaimer > > > > The information contained in this communication from the sender is > confidential. It is intended solely for use by the recipient and others > authorized to receive it. If you are not the recipient, you are hereby > notified that any disclosure, copying, distribution or taking action in > relation of the contents of this information is strictly prohibited and may > be unlawful. > > > > This email has been scanned for viruses and malware, and may have been > automatically archived by Mimecast, a leader in email security and cyber > resilience. Mimecast integrates email defenses with brand protection, > security awareness training, web security, compliance and other essential > capabilities. Mimecast helps protect large and small organizations from > malicious activity, human error and technology failure; and to lead the > movement toward building a more resilient world. To find out more, visit > our website. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
