[SOLR-14040] solr.xml shareSchema does not work in SolrCloud

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Fix Version/s: 8.5
• Component/s: Schema and Analysis
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 09/Dec/19 20:52
• Updated: 03/Apr/23 22:56
• Resolved: 07/Mar/20 02:01

Description

solr.xml has a shareSchema boolean option that can be toggled from the default of false to true in order to share IndexSchema objects within the Solr node. This is silently ignored in SolrCloud mode. The pertinent code is org.apache.solr.core.ConfigSetService#createConfigSetService which creates a CloudConfigSetService that is not related to the SchemaCaching class. This may not be a big deal in SolrCloud which tends not to deal well with many cores per node but I'm working on changing that.

Issue Links

• fixes: SOLR-7282 Cache config or index schema objects by configset and share them across cores
• is part of: SOLR-14311 Shared schema should not have access to core level classes
• is related to: SOLR-14232 Add shareSchema leak protections
• links to: GitHub Pull Request #1166