The other possibility is that the "live_nodes" znode somehow lost the registration of that node. This shouldn't be happening, I've only seen it when Zookeeper had problems (full disk in this case).
A node is only considered _really_ available if its state in the state.json (or clusterstate.json in older setups) is "active" _and_ it is in the live_nodes znode. In this state, the only real cure I know of is to restart the Solr instance, that'll re-insert itself in the live_nodes znode. Best, Erick On Tue, Jan 19, 2016 at 2:31 AM, danny teichthal <dannyt...@gmail.com> wrote: > From my short experience, it indicates that the particular node lost > connection with zookeeper. > Like Binoy said, It may be because the process/host is down, but also could > be a result of a network problem. > > On Tue, Jan 19, 2016 at 12:20 PM, Binoy Dalal <binoydala...@gmail.com> > wrote: > >> In my experience 'Gone' indicates that that particular solr instance itself >> is down. >> To bring it back up, simply restart solr. >> >> On Tue, 19 Jan 2016, 11:16 davidphilip cherian < >> davidphilipcher...@gmail.com> >> wrote: >> >> > Hi, >> > >> > Solr-admin cloud view page has got another new radio button indicating >> > status of node : 'Gone' status. What does that mean? One of my >> collection >> > is in that state and it is not serving any request. How to bring that up? >> > >> -- >> Regards, >> Binoy Dalal >>