[SOLR-8155] json.facet - prefix parameter doesn't work properly

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.3
• Fix Version/s: 5.5.1, 5.6, 6.0
• Component/s: Facet Module
• Assignee: Yonik Seeley
• Reporter: Yosi Nesher
• Created: 11/Oct/15 13:17
• Updated: 11/Apr/16 18:12
• Resolved: 05/Mar/16 23:57

Description

When using prefix in nested facets, not all values are found.
In the following query, I use facet with prefix in both old way (facet.field) and new way (json.facet).
In old way, I get 5 values. In new way I get only 3.

This is the field definition in the schema:
<field name="topics_f" type="string" indexed="true" stored="true" required="false" multiValued="true" />

When I add to the schema docValues="true" the issue is solved.

Query:

http://localhost:8983/solr/mycore/select?q=*%3A*&rows=0&wt=json&indent=true&facet=true&facet.field=topics_f&facet.prefix=2&json.facet={trendFieldFacet:{type:terms,%20field:topics_f,%20%20prefix:%222%22%20}}

Response:

{
"responseHeader": {
"status": 0,
"QTime": 0,
"params": {
"q": ":",
"json.facet": "{trendFieldFacet:{type:terms, field:topics_f, prefix:\"2\" }}",
"facet.field": "topics_f",
"indent": "true",
"facet.prefix": "2",
"rows": "0",
"wt": "json",
"facet": "true",
"_": "1444566142012"
}
},
"response":

{ "numFound": 17, "start": 0, "docs": [] }

,
"facet_counts": {
"facet_queries": {},
"facet_fields":

{ "topics_f": [ "2/device/iphone", 4, "2/device/samsung", 4, "2/city/london", 1, "2/city/rome", 1, "2/device/other", 1 ] }

,
"facet_dates": {},
"facet_ranges": {},
"facet_intervals": {},
"facet_heatmaps": {}
},
"facets": {
"count": 17,
"trendFieldFacet": {
"buckets": [

{ "val": "2/device/iphone", "count": 4 }

,

{ "val": "2/device/samsung", "count": 4 }

,

{ "val": "2/device/other", "count": 1 }

]
}
}
}