Modify ZK ensemble string in a running SolrCloud?

2020-03-23 Thread Bram Van Dam
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 ar

Recently moved to Solr 8.4.1

2020-03-23 Thread Paresh
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 repor

Re: Recently moved to Solr 8.4.1

2020-03-23 Thread Erick Erickson
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 some

Re: Modify ZK ensemble string in a running SolrCloud?

2020-03-23 Thread Erick Erickson
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 So

Re: Modify ZK ensemble string in a running SolrCloud?

2020-03-23 Thread Bram Van Dam
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, mu