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From Emir Arnautović <emir.arnauto...@sematext.com>
Subject Re: CACHE -> fieldValueCache usage
Date Thu, 20 Sep 2018 13:32:28 GMT
Hi Vincenzo,
Are you saying that you used to see some numbers other than 0 and now you see 0? If it is
always zero, it means that you are not using features that require uninverted version of field
(mainly faceting) or that you have doc values enabled on all fields that are used in such
scenario so there is no need to use fieldValueCache which is recommended.

FieldValueCache is defined by default so that’s why it is not defined in solr.xml, but you
can override defaults.

HTH,
Emir 

--
Monitoring - Log Management - Alerting - Anomaly Detection
Solr & Elasticsearch Consulting Support Training - http://sematext.com/



> On 19 Sep 2018, at 15:43, Vincenzo D'Amore <v.damore@gmail.com> wrote:
> 
> Hi all,
> 
> sorry if I bothered you all but in these days I'm just struggling what's
> going on with my production servers...
> 
> Looking at Solr Admin Panel I've found the CACHE -> fieldValueCache tab
> where all the values are 0.
> 
> class:org.apache.solr.search.FastLRUCache
> description:Concurrent LRU Cache(maxSize=10000, initialSize=10,
> minSize=9000, acceptableSize=9500, cleanupThread=false)
> stats:
> CACHE.searcher.fieldValueCache.cumulative_evictions:0
> CACHE.searcher.fieldValueCache.cumulative_hitratio:0
> CACHE.searcher.fieldValueCache.cumulative_hits:0
> CACHE.searcher.fieldValueCache.cumulative_inserts:0
> CACHE.searcher.fieldValueCache.cumulative_lookups:0
> CACHE.searcher.fieldValueCache.evictions:0
> CACHE.searcher.fieldValueCache.hitratio:0
> CACHE.searcher.fieldValueCache.hits:0
> CACHE.searcher.fieldValueCache.inserts:0
> CACHE.searcher.fieldValueCache.lookups:0
> CACHE.searcher.fieldValueCache.size:0
> CACHE.searcher.fieldValueCache.warmupTime:0
> 
> what do you thing, is that normal? Given that this stats comes from a
> production server I suppose to have some number here and looking at
> solrconfig.xml I don't see any configuration regarding the fieldValueCache.
> Don't should I see something here?
> 
> Cheers,
> Vincenzo
> 
> -- 
> Vincenzo D'Amore


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