On 3/28/2020 8:02 AM, Marius Ghita wrote:
I'm running Solr inside a VM and I'm mounting the core folder when the VM
boots up. However, if I destroy the VM and reinstall Solr, it won't
recognize the previously created core. How can I tell Solr in an automated
way to register the core?
When Solr starts, it navigates the entire solr home and tries to
activate any cores that it locates there. This is a process called
"Core Discovery."
If Solr is running in cloud mode (with zookeeper), it compares the cores
that it finds with the information in zookeeper. If ZK database doesn't
contain a collection referencing a core, the core will be deleted. See
this issue:
https://issues.apache.org/jira/browse/SOLR-13396
If you're not running in cloud mode, then there's no zookeeper and no
central database to compare to, so Solr should not delete anything.
Thanks,
Shawn
