I'm all for moving towards it if it has both (or at least a good tradeoff between):
- A proven stability, like the current implementation - A noted increase in performance for common use cases It seems to me that without the performance benefits, the loss in stability (PRS has had a few bad bugs in 9x releases) is worrisome. I'd be very happy to move to PRS if we can improve it to give us concrete benefits, but until then I'm not in favor of making it the default. Maybe the ephemeral node for replica state <https://github.com/apache/solr/pull/2432#discussion_r1586811114> is the logic we really need to make PRS "pop", but I haven't thought about it a ton. - Houston On Thu, May 2, 2024 at 12:52 PM David Smiley <dsmi...@apache.org> wrote: > Note that PRS has existed for all of the 9x series. I say in 10, > let's finally move on. Be bold. > > On Thu, May 2, 2024 at 1:19 PM Ilan Ginzburg <ilans...@gmail.com> wrote: > > > > There is no plan to remove the non PRS way to manage replica state before > > making PRS the default way to manage replica state (in addition to the > > current state.json option) then letting PRS bake for a while with all new > > deployments (for example a whole release), right? > > > > Ilan > > > > > > > > On Thu, May 2, 2024 at 6:25 PM David Smiley <dsmi...@apache.org> wrote: > > > > > In the meetup, my colleague Aparna shared her explorative findings of > > > enabling PRS, which uncovered 2 matters that seem to defeat much of > > > PRS's idealized benefits: > > > * Shard leader elections still touch state.json > > > * Replica state is still in state.json > > > Given those two matters, we didn't notice any improvement (or > > > regression). Some FullStory devs, who use this mode in production, > > > shared that the first matter wasn't noticed by them because they only > > > run with one replica per shard. The other... was unclear why; maybe > > > for backwards-compatibility? In my mind, there shouldn't be such a > > > concern as it's enabled per-collection and you'd only do this once all > > > servers are known to be PRS-enabled (e.g. have a modern Solr version). > > > > > > If we can identify JIRA issues to capture the work involved, we could > > > converse more and track the work to completion. I think it's > > > important to get to a future in Solr 10 where there is one mode (PRS) > > > not two. > > > > > > ~ David Smiley > > > Apache Lucene/Solr Search Developer > > > http://www.linkedin.com/in/davidwsmiley > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: dev-unsubscr...@solr.apache.org > > > For additional commands, e-mail: dev-h...@solr.apache.org > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@solr.apache.org > For additional commands, e-mail: dev-h...@solr.apache.org > >
