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https://issues.apache.org/jira/browse/SOLR-8312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15083525#comment-15083525
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Michael Sun commented on SOLR-8312:
-----------------------------------
Here is the patch. It adds two metrics to facet telemetry:
1. inputDocSetSize: the size of input doc set for each sub-facet.
2. numBuckets: number of unique buckets. It is the same number to the
numBuckets in facet query result if numBuckets param is set to true in query.
and is for field facet only. The reason to dup in facet telemetry is
* query user may not turn on numBuckets but the operation and monitoring team
still want to view numBucket information.
* operation and monitoring team may not be allowed to view query result.
> Add doc set size and number of buckets metrics
> ----------------------------------------------
>
> Key: SOLR-8312
> URL: https://issues.apache.org/jira/browse/SOLR-8312
> Project: Solr
> Issue Type: Sub-task
> Components: Facet Module
> Reporter: Michael Sun
> Fix For: Trunk
>
> Attachments: SOLR-8312.patch
>
>
> The doc set size and number of buckets represents the input data size and
> intermediate data size for each step of facet. Therefore they are useful
> metrics to be included in telemetry.
> The output data size is usually defined by user and not too large. Therefore
> the output data set size is not included.
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