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https://issues.apache.org/jira/browse/SOLR-4866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13669122#comment-13669122
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Sannier Elodie commented on SOLR-4866:
--------------------------------------
I'm reproducing the problem with the 4.2.1 example with 2 shards.
1) started up solr shards, indexed the example data, and confirmed empty
fieldCaches
[sanniere@funlevel-dx example]$ java
-Dbootstrap_confdir=./solr/collection1/conf -Dcollection.configName=myconf
-DzkRun -DnumShards=2 -jar start.jar
[sanniere@funlevel-dx example2]$ java -Djetty.port=7574 -DzkHost=localhost:9983
-jar start.jar
2) used both grouping and faceting on the popularity field, then checked the
fieldcache insanity count
[sanniere@funlevel-dx example]$ curl -sS
"http://localhost:8983/solr/select?q=*:*&group=true&group.field=popularity"; >
/dev/null
[sanniere@funlevel-dx example]$ curl -sS
"http://localhost:8983/solr/select?q=*:*&facet=true&facet.field=popularity"; >
/dev/null
[sanniere@funlevel-dx example]$ curl -sS
"http://localhost:8983/solr/admin/mbeans?stats=true&key=fieldCache&wt=json&indent=true";
| grep "entries_count\|insanity_count"
"entries_count":10,
"insanity_count":2,
"insanity#0":"VALUEMISMATCH: Multiple distinct value objects for
SegmentCoreReader(owner=_g(4.2.1):C1)+popularity\n\t'SegmentCoreReader(owner=_g(4.2.1):C1)'=>'popularity',class
org.apache.lucene.index.SortedDocValues,0.5=>org.apache.lucene.search.FieldCacheImpl$SortedDocValuesImpl#12129794\n\t'SegmentCoreReader(owner=_g(4.2.1):C1)'=>'popularity',int,null=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#12298774\n\t'SegmentCoreReader(owner=_g(4.2.1):C1)'=>'popularity',int,org.apache.lucene.search.FieldCache.NUMERIC_UTILS_INT_PARSER=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#12298774\n",
"insanity#1":"VALUEMISMATCH: Multiple distinct value objects for
SegmentCoreReader(owner=_f(4.2.1):C9)+popularity\n\t'SegmentCoreReader(owner=_f(4.2.1):C9)'=>'popularity',int,org.apache.lucene.search.FieldCache.NUMERIC_UTILS_INT_PARSER=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#16648315\n\t'SegmentCoreReader(owner=_f(4.2.1):C9)'=>'popularity',int,null=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#16648315\n\t'SegmentCoreReader(owner=_f(4.2.1):C9)'=>'popularity',class
org.apache.lucene.index.SortedDocValues,0.5=>org.apache.lucene.search.FieldCacheImpl$SortedDocValuesImpl#1130715\n"}}},
"HIGHLIGHTING",{},
"OTHER",{}]}
Elodie
> 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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