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https://issues.apache.org/jira/browse/SOLR-11204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120789#comment-16120789
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Varun Thacker commented on SOLR-11204:
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Some observations:
1. Should {[ConcurrentLRUCache#ramBytesUsed}} synchronize on the map variable
like {[LRUCache#ramBytesUsed}} ?
2. LRUCache and ConcurrentLRUCache only tracks ramBytesUsed when {{maxRamMB}}
is enabled. LRUCache exposes ( which document cache / query result cache uses
by default ) but FastLRUCache doesn't ( which is used by filter cache by
default )
- How much of an overhead is calculating ramBytesUsed ? If it isn't then we can
we do it even when {maxRamMB}} is not used? That way a user who specifies max
entries can atleast see in the UI how much heap space are the caches occupying
> Expose a total size stat for the query result and filter cache
> --------------------------------------------------------------
>
> Key: SOLR-11204
> URL: https://issues.apache.org/jira/browse/SOLR-11204
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Varun Thacker
> Priority: Minor
>
> It will be useful to display the size of the filter cache and query result
> cache currently being used . We added support for this to the field cache in
> SOLR-9844
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