Thanks Shawn - I misspoke when I said recommendation, should have said ³packaged with². I appreciate the feedback and the quick updates to the Jira issue. We¹ll plan to proceed with 3.4.12 when we go live.
-TZ On 6/29/18, 11:38 AM, "Shawn Heisey" <apa...@elyograg.org> wrote: >On 6/28/2018 8:39 PM, Zimmermann, Thomas wrote: >> I was wondering if there was a reason Solr 7.4 is still recommending ZK >>3.4.11 as the major version in the official changelog vs shipping with >>3.4.12 despite the known regression in 3.4.11. Are there any known >>issues with running 7.4 alongside ZK 3.4.12. We are beginning a major >>Solr upgrade project (4.10 to 7.4) and want to stand up the most recent >>supported versions of both ZK/Solr as part of the process. > >That is NOT a recommendation. > >The mention of ZK 3.4.11 in Solr's CHANGES.txt file is simply the >version of ZK that Solr ships with. ZK is included with Solr mostly for >the client functionality. The regression is in the server code, and >unless you run the embedded ZK server, which is not recommended for >production, the ZK library that ships with Solr will not experience the >regression. > >I am not aware of anywhere in Solr or its reference guide that makes a >recommendation about a specific version of ZK. The reference guide does >mention version 3.4.11, but that's only because that's the version that >Solr includes. The version number in the documentation source code is >dynamic and will always match the specific version that Solr includes. > >The compatibility goals of the ZK project indicate that you can run any >3.4.x or 3.5.x version of ZK on the server side and be compatible with >the ZK 3.4.x client that's in Solr. > >Look for "Backward Compatibility" on this page: > >https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement > >We have an issue for upgrading the version of ZK in Solr to 3.4.12. I >have uploaded a new patch on that issue to try and clear up any >confusion about what version of ZK is recommended for use with Solr: > >https://issues.apache.org/jira/browse/SOLR-12346 > >Thanks, >Shawn >
