[SOLR-10742] SolrCores.getNamesForCore is quite inefficient and blocks other core operations

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.7
• Assignee: Erick Erickson
• Reporter: Erick Erickson
• Created: 24/May/17 15:50
• Updated: 04/Nov/20 15:23
• Resolved: 03/Jul/20 03:57

Description

SolrCores.getNamesForCore iterates through all the cores to find all the aliases to this core. It does this in a synchronized block which blocks other core operations.

For installations with many cores this can be a performance issue. I'm not sure it makes sense to do it this way anyway, perhaps SolrCore should have a list of its current aliases and we can be more efficient about this? Or otherwise get this information in a less heavy-weight fashion?

I'm assigning this to myself to keep track of it, but anyone who wants to grab it please feel free.