Re: Zookeeper 3.4.5 with Solr 8.8.0
On 3/1/2021 9:45 PM, Subhajit Das wrote: That is not possible at this time. Will it be ok, if remote the zookeeper dependencies (jars) from solr and replace it with 3.5.5 jars? Thanks in advance. Maybe. But I cannot say for sure. I know that when we upgraded to ZK 3.5, some fairly significant code changes in Solr were required. I did not see whether more changes were needed when we upgraded again. It would not surprise me to learn that a jar swap won't work. Upgrades are far more likely to work than downgrades. Thanks, Shawn
RE: Zookeeper 3.4.5 with Solr 8.8.0
Hi Shawn, That is not possible at this time. Will it be ok, if remote the zookeeper dependencies (jars) from solr and replace it with 3.5.5 jars? Thanks in advance. From: Shawn Heisey Sent: Monday, March 1, 2021 11:17:24 PM To: solr-user@lucene.apache.org ; u...@zookeeper.apache.org Subject: Re: Zookeeper 3.4.5 with Solr 8.8.0 On 3/1/2021 6:51 AM, Subhajit Das wrote: > I noticed, that Solr 8.8.0 uses Zookeeper 3.6.2 client, while Solr 6.3.0 uses > Zookeeper 3.4.6 client. Is this a client bug or mismatch issue? > If so, how to fix this? The ZK project guarantees that each minor version (X.Y.Z, where Y is the same) will work with the previous minor version or the next minor version. 3.4 and 3.6 are two minor versions apart, and thus compatibility cannot be guaranteed. See the "backward compatibility" matrix here: https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement I think you'll need to upgrade your ZK server ensemble to fix it. Thanks, Shawn
Re: Zookeeper 3.4.5 with Solr 8.8.0
On 3/1/2021 6:51 AM, Subhajit Das wrote: I noticed, that Solr 8.8.0 uses Zookeeper 3.6.2 client, while Solr 6.3.0 uses Zookeeper 3.4.6 client. Is this a client bug or mismatch issue? If so, how to fix this? The ZK project guarantees that each minor version (X.Y.Z, where Y is the same) will work with the previous minor version or the next minor version. 3.4 and 3.6 are two minor versions apart, and thus compatibility cannot be guaranteed. See the "backward compatibility" matrix here: https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement I think you'll need to upgrade your ZK server ensemble to fix it. Thanks, Shawn
