I agree completely, it was just something ive always wanted to try doing. if my indexes were smaller id just fire up a bunch of slaves on a single machine and nginx them out, but even 2tb SSD's are some what expensive and theres not always enough ports on the servers to keep adding more.
On Fri, May 19, 2017 at 3:33 PM, Erick Erickson <erickerick...@gmail.com> wrote: > One problem here is how to open new searchers on the r/o core. > Consider the autocommit setting. The cycle is > > when the first doc comes in, start your timer > > x milliseconds later, do a commit and (perhaps) open a new searcher. > > but the core referencing the index in R/O mode doesn't have any update > event to start the timer. > > Even if you issue a commit to the R/O copy, there is short-circuiting > in the code that says "since nothing's changed, I'll just ignore > this". And by definition, the commit is an update call.... > > I suppose you could force things here by issuing a reload command on > the R/O core... > > WARNING: Since I strongly discourage this it's not something I've > personally verified.... > > And the risk of corrupting your index because someone inadvertently > does something unexpected is high. > > I always come back to the question of why in the world spend > engineering time on this when the cost of a new 1TB disk is so low. I > realize there are environments where you can't "just plug in another > disk", but you see where I'm going. > > Best, > Erick > > On Fri, May 19, 2017 at 11:47 AM, David Hastings > <hastings.recurs...@gmail.com> wrote: > > Mt thought would be that the machine would need only the same amount of > ram > > minus the heap size of the second instance of solr, since it will be file > > caching the index into memory only once since its the same files, but > read > > by both solr instances. my solr slaves have about 150gb each. > > > > On Fri, May 19, 2017 at 2:45 PM, Rick Leir <rl...@leirtech.com> wrote: > > > >> > multiple solr instances on one machine performs better than multiple > >> > >> Does the machine have enough RAM to support all the instances? Again, > time > >> for an experiment! > >> -- > >> Sorry for being brief. Alternate email is rickleir at yahoo dot com >
