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3256669 - solr memory exhausts with LRU documentCache

Symptom

Solr suffers from continuous high memory suspension. 

And from dynatrace memory profiling, it is showing the LRUCache for Solr documents is relevant with the high memory consumption.

From threaddump, almost all threads are blocked by org.apache.solr.search.LRUCache.computeIfAbsent.


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Environment

solr 8.x

Keywords

solr memory;LRUCache;FastLRUCache , KBA , CEC-SCC-COM-SRC-SER , Search and Navigation , Problem

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