I'll agree with Shawn too - munging Zookeeper by hand can lead to VERY unexpected results...
My recommendation would be to start fresh with a new 5.x setup and a new /chroot in Zookeeper. (This can be deleted and recreated repeatedly if necessary - I know because I did... a lot... before I got it right) Then, pull your data out of your old core/collection either by using the approach in the link I sent earlier or possibly copying over the core directory and making the changes to the xml files necessary for 5.x These links may help you decide how to proceed... https://cwiki.apache.org/confluence/display/solr/Upgrading+Solr https://cwiki.apache.org/confluence/display/solr/Upgrading+a+Solr+4.x+Cluster+to+Solr+5.0 https://cwiki.apache.org/confluence/display/solr/Major+Changes+from+Solr+4+to+Solr+5 On Wed, Apr 6, 2016 at 8:58 AM, John Bickerstaff <j...@johnbickerstaff.com> wrote: > I recently upgraded from 4.x to 5.5 -- it was a pain to figure it out, but > it turns out to be fairly straightforward... > > Caveat: Because I run all my data into Kafka first, I was able to easily > re-create my collections by running a microservice that pulls from Kafka > and dumps into Solr. > > I have a rough draft document for how to "upgrade by replacement" in this > way - basically, throw away the older Solr, build a new /chroot in > Zookeeper and issue a few command line commands to upload configs (from the > 4.x version) and create new collections in the 5.x version. > > If this is what you mean by "bootstrap" (Upgrade to 5.x but use your > index/collection/core from a previous version) then perhaps I can help. > > There were instructions on the Solr wiki for the differences between 4.x > and 5.x... > > But before I go into a lot more detail, please drop us a line and let me > know if that's what you need... > > For reference you can look at this, but I have more refined instructions > now: > > > http://stackoverflow.com/questions/34909909/how-to-correctly-add-additional-solr-5-vm-nodes-to-solr-cloud?rq=1 > > On Wed, Apr 6, 2016 at 7:01 AM, Shawn Heisey <apa...@elyograg.org> wrote: > >> On 4/5/2016 3:08 PM, Anuj Lal wrote: >> > I am new to solr. Need some advice from more experienced solr team >> members >> > >> > I am upgrading 4.4 solr cluster to 5.5 >> > >> > One of the step I am doing for upgrade is to bootstrap from existing >> 4.4 solr home ( after upgrading solr installation to 5.5) >> >> We'll need a lot more detail about *exactly* what "bootstrap" means >> here. The fact that you chose the word "bootstrap" to describe your >> process sets off a red flag in my mind, and might mean that you're doing >> this upgrade in a way that won't work like you're expecting it to. >> >> One particular question I'd like to have answered: Are you upgrading >> each server in place using the exact same zkHost string as the 4.4 >> install was using, or are you trying to build up a new ZK >> chroot/database using the existing Solr home? >> >> I have not actually performed one of these SolrCloud upgrades, but I >> would expect that if you don't connect to the existing zookeeper >> database, it would probably behave exactly like you've described. If >> I'm completely wrong about how this should be done, somebody please let >> me know. >> >> Going from 4.4 to 5.5 is a significant upgrade (including one major >> release, 10 minor releases, and 10 bugfix releases) and you might find >> that the two versions won't coexist very well. The devs do try to make >> different versions compatible, but SolrCloud is evolving at an extremely >> rapid pace, so this cannot be guaranteed when the version difference is >> so large. >> >> Assuming I have a correct mental picture of how you got to where you >> are, there might be some things you could do to get it back on track, >> but that would require significant manual fiddling, and no guarantee of >> success. >> >> Thanks, >> Shawn >> >> >
