[ 
https://issues.apache.org/jira/browse/SOLR-8540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Shawn Heisey closed SOLR-8540.
------------------------------
    Resolution: Duplicate

SOLR-8496 is the same problem, and was opened first.  Closing this issue as a 
duplicate.

> Multi select facets give incorrect results
> ------------------------------------------
>
>                 Key: SOLR-8540
>                 URL: https://issues.apache.org/jira/browse/SOLR-8540
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 5.3, 5.3.1
>            Reporter: Vasiliy Bout
>
> We have a single core and use faceting to search documents. When we started 
> to use multi select faceting we noticed, that results do not match with the 
> real data in the core.
> For example, we make this simple query:
> {noformat}
> q=*:*
> rows=0
> facet=true
> facet.limit=5
> facet.field=file_type
> {noformat}
> Corresponding URL is 
> {{http://localhost:8983/.../select?q=*%3A*&rows=0&wt=json&indent=true&facet=true&facet.limit=5&facet.field=file_type}}
> We get the following results:
> {noformat}
> {
>   "responseHeader": {
>     "status": 0,
>     "QTime": 42
>   },
>   "response": {
>     "numFound": 1240067,
>     "start": 0,
>     "docs": []
>   },
>   "facet_counts": {
>     "facet_queries": {},
>     "facet_fields": {
>       "file_type": [
>         "5",
>         1073053,
>         "3",
>         51078,
>         "7",
>         41956,
>         "10",
>         16121,
>         "12",
>         12585
>       ]
>     },
>     "facet_dates": {},
>     "facet_ranges": {},
>     "facet_intervals": {},
>     "facet_heatmaps": {}
>   }
> }
> {noformat}
> When we add a filter by {{file_type}}:
> {noformat}
> q=*:*
> fq=file_type:3
> rows=0
> facet=true
> facet.limit=5
> facet.field=file_type
> {noformat}
> Corresponding URL is 
> {{http://localhost:8983/.../select?q=*%3A*&fq=file_type%3A3&rows=0&wt=json&indent=true&facet=true&facet.limit=5&facet.field=file_type}}
> then we get nonzero count only for the filtered value:
> {noformat}
> {
>   "responseHeader": {
>     "status": 0,
>     "QTime": 5
>   },
>   "response": {
>     "numFound": 51078,
>     "start": 0,
>     "docs": []
>   },
>   "facet_counts": {
>     "facet_queries": {},
>     "facet_fields": {
>       "file_type": [
>         "3",
>         51078,
>         "1",
>         0,
>         "4",
>         0,
>         "5",
>         0,
>         "7",
>         0
>       ]
>     },
>     "facet_dates": {},
>     "facet_ranges": {},
>     "facet_intervals": {},
>     "facet_heatmaps": {}
>   }
> }
> {noformat}
> But we want to have multi select faceting by file_type, so we exclude the 
> filter from faceting:
> {noformat}
> q=*:*
> fq={!tag=ft}file_type:3
> rows=0
> facet=true
> facet.limit=5
> facet.field={!ex=ft}file_type
> {noformat}
> Corresponding URL is 
> {{http://localhost:8983/.../select?q=*%3A*&fq=%7B!tag%3Dft%7Dfile_type%3A3&rows=0&wt=json&indent=true&facet=true&facet.limit=5&facet.field={!ex=ft}file_type}}
> But results contain incorrect values for all available file_type values. All 
> counts are greater than they were before we added the filter:
> {noformat}
> {
>   "responseHeader": {
>     "status": 0,
>     "QTime": 38
>   },
>   "response": {
>     "numFound": 51078,
>     "start": 0,
>     "docs": []
>   },
>   "facet_counts": {
>     "facet_queries": {},
>     "facet_fields": {
>       "file_type": [
>         "5",
>         1073146,
>         "3",
>         66705,
>         "7",
>         42202,
>         "10",
>         16903,
>         "12",
>         12710
>       ]
>     },
>     "facet_dates": {},
>     "facet_ranges": {},
>     "facet_intervals": {},
>     "facet_heatmaps": {}
>   }
> }{noformat}
> We expect multi select facet counts to be exactly the same as without 
> filters. Before we added the filter by {{file_type}} we saw that there are 
> only 51078 documents with {{file_type=3}}. But when we add the filter and 
> exclude it from the faceting, Solr tells us about 66705 documents with 
> {{file_type=3}} while the {{numFound}} is still 51078.



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