Re: Lost solr collections when restarting zoo and solr

[Jan Høydahl <ja...@cominvent.com>]

Please add
- Operating system
- How Solr is installed
- What your solr.in <http://solr.in/>.sh setup is

I get confused by you using backslash path separator, is this Windows? And it is quite uncommon on use /opt/solr/solr/server/solr as SOLR_HOME in a production install, the default when using the installer is /var/solr/data.
I understand you rebooted the machines to downgrade Java - that should not be any problem, though I'd rather upgrade to from 11.0.7 to 11.0.10 than downgrade??

Jan

> 30. mar. 2021 kl. 06:35 skrev yaswanth kumar <ya...@gmail.com>:
> 
> Hi Team,
> 
> Solr version: 8.2
> Zookeeper: 3.4.14
> Java: Open JDK 11
> 
> Two solr nodes with 1 zookeeper
> 
> *Issue*: We are trying to degrade java version from 11.0.7 to 11, so part
> of this change (as there are couple of known issues with java 11.0.7),
> after a system reboot, and with zookeeper restart followed by solr service
> restart we did lost all the collection folders under
> \opt\solr820\solr\server\solr and also it made all collections to be
> disappeared from solr cloud. But the solrdata is all intact
> 
> Not really sure what could be the issue here? was thinking if zookeeper
> data was messed up which deleted all solr collections. Need help in
> understanding the issue on where it could be.
> 
> Zoo.cfg got proper data and log path, don't see any issue with them.
> 
> Also is there any regular pattern that we need to follow when ever servers
> were rebooted and once they come back online? Like first start zookeeper
> and then solr (any specific order??)
> 
> -- 
> Thanks & Regards,
> Yaswanth Kumar Konathala.
> yaswanthcse@gmail.com