[SOLR-9117] Leaking the first SolrCore after reload

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.5.2, 5.6, 6.0.1, 6.1, 7.0
• Labels: core leak
• Assignee: Shalin Shekhar Mangar
• Reporter: Jessica Cheng Mallet
• Created: 16/May/16 17:03
• Updated: 02/Oct/19 17:24
• Resolved: 17/Jun/16 21:38

Description

When a SolrCore for a particular index is created for the first time, it's added to the SolrCores#createdCores map. However, this map doesn't get updated when this core is reloaded, leading to the first SolrCore being leaked.

Taking a look at how createdCores is used, it seems like it doesn't serve any purpose (its only read is in SolrCores#getAllCoreNames, which includes entries from SolrCores.cores anyway), so I'm proposing a patch to remove the createdCores map completely. However, if someone else knows that createdCores exist for a reason, I'll be happy to change the fix to updating the createdCores map when reload is called.

Issue Links

• relates to: SOLR-6678 Collection/core reload is causing a memory leak