Hi all, Solr 7.4.x and 7.5.x ships with ZooKeeper 3.4.11.
Meanwhile official stable ZooKeeper version is 3.4.12 and 3.4.13. The Solr supported version 3.4.11 has been removed from official distributions (https://www-eu.apache.org/dist/zookeeper/) I am guessing due to https://issues.apache.org/jira/browse/ZOOKEEPER-2960. It is _trivial_ to use newer version when using external ZK ensemble however Solr Documentation (https://lucene.apache.org/solr/guide/7_5/setting-up-an-external-zookeeper-ensemble.html) says: ---- When using an external ZooKeeper ensemble, you will need need to keep your local installation up-to-date with the latest version distributed with Solr. Since it is a stand-alone application in this scenario, it does not get upgraded as part of a standard Solr upgrade. ---- Question: Anyone using ZK 3.4.12/13 and Solr 7.4/7.5 in production with success? Any noteworthy issues found? The release notes from .11 to .12 look pretty harmless on the face of it. Thanks, Jarek -- Jaroslaw Rozanski | m...@jarekrozanski.eu
