Hello, Try using "coreLoadThreads" in solr.xml. Set the value to how many cores/replicas you want to load at a time during Solr startup.
Make sure to have enough CPU/RAM to load n number of cores at a time. https://solr.apache.org/guide/solr/latest/configuration-guide/configuring-solr-xml.html Best Regards, Prafull Prakash Patil PLM Operations, Pune Mobile : +917032529590 ________________________________ From: asjo@tullinup <asjo@tullinup> on behalf of Adam Sjøgren via users <[email protected]> Sent: Saturday, June 13, 2026 7:19 PM To: [email protected] <[email protected]> Cc: Adam Sjøgren <[email protected]> Subject: Restricting simultaneous recovery of multiple shards Hi, When multiple shards need recovery (eg after a Solr instance has crashed after running out of memory) they all start recovering at the same time. Is there a way to tell Solr to only recover a set maximum number of shards at a time? Our Solr machines are a little squeezed for storage currently, and while we wait for more (and curse at the AI companies' effect on nvme prices), it would be very convenient if I could say "recover at most 3 shards at a time", to avoid running out of storage during full-copy recovery. Or even better, if I could say: "recover at most 3 shards using full-copy at the same time". We are currently employing a workaround where other replicas are temporarily moved to a different disk during recovery, but it's not a workaround I am very comfortable with. Best regards, Adam -- "Most regrets I've gathered came from caving in Adam Sjøgren Darkness has a way of shedding light on me [email protected] Seems the more I'm lost the more I'm feeling free" ************************************************************************************** This e-mail and any attachments thereto may contain confidential information and/or information protected by intellectual property rights for the exclusive attention of the intended addressees named above. If you have received this transmission in error, please immediately notify the sender by return e-mail and delete this message and its attachments. Unauthorized use, copying or further full or partial distribution of this e-mail or its contents is prohibited. **************************************************************************************
