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https://issues.apache.org/jira/browse/SOLR-8741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15172075#comment-15172075
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Pablo Anzorena commented on SOLR-8741:
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[~arafalov] no, it is not in SolrCloud. 

[[email protected]] thank you very much! Solr is using MurmurHash3 128 bits 
hash, right? How accurate is the HyperLogLog? I read that for cardinality 
greater than 10^9 it has an error of 2%. Is the same in solr? Have you, or 
somebody else make any test on how accurate it is? 


> Json Facet API, numBuckets not returning real number of buckets.
> ----------------------------------------------------------------
>
>                 Key: SOLR-8741
>                 URL: https://issues.apache.org/jira/browse/SOLR-8741
>             Project: Solr
>          Issue Type: Bug
>          Components: Facet Module
>            Reporter: Pablo Anzorena
>
> Hi, using the json facet api I realized that the numBuckets is wrong. It is 
> not returning the right number of buckets. I have a dimension which 
> numBuckets says it has 1340, but when retrieving all the results it brings 
> 988. 
> FYI the field is of type string.
> Thanks.



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