Modify ZK ensemble string in a running SolrCloud?
Is it possible to change the ZK ensemble without restarting the entire SolrCloud? Specifically adding or removing a ZK instance from the ensemble. I'm assuming the answer is no, as far as I can tell the only place where this is configured is the zkHost parameter, which is passed to Solr as a JVM argument. But I figured I'd ask anyway. Thanks for any insights! - Bram
Recently moved to Solr 8.4.1
Hi All, We recently moved to SOlr 8.4.1 from Solr 7.7.0. I am seeing below getting dumpled in Solr.log file - 2020-03-23 09:40:59.385 ERROR (updateExecutor-3-thread-4-processing-x:collection1) [ ] o.a.s.c.SolrCore Too many close [count:-1] on org.apache.solr.core.SolrCore@4c134748. Please report this exception to solr-user@lucene.apache.org Any help is appreciated. Reagrds, Paresh -- Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Recently moved to Solr 8.4.1
Do you have any custom code anywhere? And when does this occur? Solr cores are only closed when Solr is shutting down or, in the case of transient cores, one of them is being evicted from memory. Are you using transient cores? No one else has reported this, so my first guess is that you are somehow doing something custom, but that’s a guess. Best, Erick > On Mar 23, 2020, at 5:51 AM, Paresh wrote: > > Hi All, > > We recently moved to SOlr 8.4.1 from Solr 7.7.0. I am seeing below getting > dumpled in Solr.log file - > > 2020-03-23 09:40:59.385 ERROR > (updateExecutor-3-thread-4-processing-x:collection1) [ ] o.a.s.c.SolrCore > Too many close [count:-1] on org.apache.solr.core.SolrCore@4c134748. Please > report this exception to solr-user@lucene.apache.org > > Any help is appreciated. > > Reagrds, > Paresh > > > > -- > Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: Modify ZK ensemble string in a running SolrCloud?
As of Solr 8.2, Solr is distributed with ZooKeeper 3.5.5 (will be 3.5.7 in Solr 8.6), which allows “dynamic reconfiguration”. If you’re running an earlier version of Zookeeper, then no you’ll have to restart to change ZK nodes. WARNING: I have not personally tried dynamic reconfiguration with Solr, so I don’t have any advice on exactly how to make that work or any “gotchas”… Best, Erick > On Mar 23, 2020, at 5:42 AM, Bram Van Dam wrote: > > Is it possible to change the ZK ensemble without restarting the entire > SolrCloud? Specifically adding or removing a ZK instance from the > ensemble. I'm assuming the answer is no, as far as I can tell the only > place where this is configured is the zkHost parameter, which is passed > to Solr as a JVM argument. > > But I figured I'd ask anyway. Thanks for any insights! > > - Bram
Re: Modify ZK ensemble string in a running SolrCloud?
On 23/03/2020 14:17, Erick Erickson wrote: > As of Solr 8.2, Solr is distributed with ZooKeeper 3.5.5 (will be 3.5.7 in > Solr 8.6), which allows “dynamic reconfiguration”. If you’re running an > earlier version of Zookeeper, then no you’ll have to restart to change ZK > nodes. Thanks Erick, much appreciated. I guess I'll have to settle for a restart for the time being. - Bram
