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https://issues.apache.org/jira/browse/SOLR-4866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13681529#comment-13681529
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Robert Muir commented on SOLR-4866:
-----------------------------------
{quote}
but I didn't see any obvious indication that this way a "mistake" ... I think
this is an example of the type of situation where we different data is needed
for the two different grouping algorithms and it means accepting some "insane"
redundancy
{quote}
Strongly disagree. Please note, there is no guarantee insanity will always be
supported. The algorithm should be fixed instead.
> FieldCache insanity with field used as facet and group
> ------------------------------------------------------
>
> Key: SOLR-4866
> URL: https://issues.apache.org/jira/browse/SOLR-4866
> Project: Solr
> Issue Type: Bug
> Reporter: Sannier Elodie
> Priority: Minor
>
> I am using the Lucene FieldCache with SolrCloud 4.2.1 and I have "insane"
> instances for a field used as facet and group field.
> schema fieldType & filed declaration for my
> merchantid field :
> <fieldType name="int" class="solr.TrieIntField" precisionStep="0"
> sortMissingLast="true" omitNorms="true" positionIncrementGap="0"/>
> <field name="merchantid" type="int" indexed="true" stored="true"
> required="true"/>
> The mbean stats output shows the field cache insanity after executing queries
> like :
> /select?q=*:*&facet=true&facet.field=merchantid
> /select?q=*:*&group=true&group.field=merchantid
> <int name="insanity_count">25</int>
> <str name="insanity#0">VALUEMISMATCH: Multiple distinct value objects for
> SegmentCoreReader(owner=_1z1(4.2.1):C3916)+merchantid
> 'SegmentCoreReader(owner=_1z1(4.2.1):C3916)'=>'merchantid',class
> org.apache.lucene.index.SortedDocValues,0.5=>org.apache.lucene.search.FieldCacheImpl$SortedDocValuesImpl#1517585400
>
> 'SegmentCoreReader(owner=_1z1(4.2.1):C3916)'=>'merchantid',int,org.apache.lucene.search.FieldCache.NUMERIC_UTILS_INT_PARSER=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#781169939
>
> 'SegmentCoreReader(owner=_1z1(4.2.1):C3916)'=>'merchantid',int,null=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#781169939
> </str>
> ...
> see http://markmail.org/thread/7gctyh6vn3eq5jso
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