[
https://issues.apache.org/jira/browse/SOLR-11706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16271585#comment-16271585
]
Hoss Man commented on SOLR-11706:
---------------------------------
Trivial steps to reproduce...
{noformat}
bin/solr -e techproducts
...
curl -H 'Content-Type: application/json' --data-binary
'[{"id":"x","foo_is":42,"foo_is":666},{"id":"y","foo_is":55}']
'http://localhost:8983/solr/techproducts/update?commit=true'
...
{noformat}
Note that {{stats.field}} has no problems with {{foo_is}}...
{noformat}
curl
'http://localhost:8983/solr/techproducts/query?&stats=true&stats.field=foo_is&q=*:*&rows=0&omitHeader=true'
{
"response":{"numFound":34,"start":0,"docs":[]
},
"stats":{
"stats_fields":{
"foo_is":{
"min":42.0,
"max":666.0,
"count":3,
"missing":32,
"sum":763.0,
"sumOfSquares":448345.0,
"mean":254.33333333333334,
"stddev":356.5730406709589}}}}
{noformat}
But the JSON FacetModule can't compute similar stats...
{noformat}
curl http://localhost:8983/solr/techproducts/query -d
'q=*:*&rows=0&omitHeader=true&json.facet=
{ min:"min(foo_is)", max:"max(foo_is)", sum:"sum(foo_is)",
// count and missing not supported, see SOLR-11695
sumOfSquares:"sumsq(foo_is)", mean:"avg(foo_is)", stddev:"stddev(foo_is)"
}'
{
"error":{
"metadata":[
"error-class","org.apache.solr.common.SolrException",
"root-error-class","org.apache.solr.common.SolrException"],
"msg":"can not use FieldCache on multivalued field: foo_is",
"code":400}}
{noformat}
stack trace from logs...
{noformat}
ERROR - 2017-11-29 21:40:30.417; [ x:techproducts]
org.apache.solr.common.SolrException; org.apache.solr.common.SolrException: can
not use FieldCache on multivalued field: foo_is
at
org.apache.solr.schema.SchemaField.checkFieldCacheSource(SchemaField.java:190)
at
org.apache.solr.schema.IntPointField.getValueSource(IntPointField.java:149)
at
org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:384)
at
org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:237)
at
org.apache.solr.search.ValueSourceParser$86.parse(ValueSourceParser.java:977)
at
org.apache.solr.search.FunctionQParser.parseAgg(FunctionQParser.java:421)
at
org.apache.solr.search.facet.FacetParser.parseStringStat(FacetRequest.java:429)
at
org.apache.solr.search.facet.FacetParser.parseStringFacetOrStat(FacetRequest.java:422)
at
org.apache.solr.search.facet.FacetParser.parseFacetOrStat(FacetRequest.java:352)
at
org.apache.solr.search.facet.FacetParser.parseSubs(FacetRequest.java:332)
at
org.apache.solr.search.facet.FacetTopParser.parse(FacetRequest.java:601)
at
org.apache.solr.search.facet.FacetTopParser.parse(FacetRequest.java:590)
at
org.apache.solr.search.facet.FacetModule.prepare(FacetModule.java:102)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:269)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:177)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2484)
{noformat}
(some other testing suggests that this problem exists regardless of whether
TrieInt or IntPoint fields are used ... i didn't explicitly test
float/long/double/etc... but based on a quick glance at the code i don't see
any reason why they wouldn't all be equally affected)
> JSON FacetModule can't compute stats (min,max,etc...) on multivalued fields
> ---------------------------------------------------------------------------
>
> Key: SOLR-11706
> URL: https://issues.apache.org/jira/browse/SOLR-11706
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Hoss Man
>
> While trying to write some tests demonstrating equivalences between the
> StatsComponent and the JSON FacetModule i discovered that the FacetModules
> stat functions (min, max, etc...) don't seem to work on multivalued fields.
> Based on the stack traces, i gather the problem is because the FacetModule
> seems to rely exclusively on using the "Function" parsers to get a value
> source -- apparently w/o any other method of accumulating numeric stats from
> multivalued (numeric) DocValues?
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