: I am using the Lucene FieldCache with SolrCloud and I have "insane" instances : with messages like:
FWIW: I'm the one that named the result of these "sanity checks" "FieldCacheInsantity" and i have regretted it ever since -- a better label would have been "inconsistency" : VALUEMISMATCH: Multiple distinct value objects for : SegmentCoreReader(owner=_11i(4.2.1):C4493997/853637)+merchantid : 'SegmentCoreReader(owner=_11i(4.2.1):C4493997/853637)'=>'merchantid',class : org.apache.lucene.index.SortedDocValues,0.5=>org.apache.lucene.search.FieldCacheImpl$SortedDocValuesImpl#557711353 : 'SegmentCoreReader(owner=_11i(4.2.1):C4493997/853637)'=>'merchantid',int,null=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#1105988713 : 'SegmentCoreReader(owner=_11i(4.2.1):C4493997/853637)'=>'merchantid',int,org.apache.lucene.search.FieldCache.NUMERIC_UTILS_INT_PARSER=>org.apache.lucene.search.FieldCacheImpl$IntsFromArray#1105988713 : : All insane instances are for a field "merchantid" of type "int" used as facet : and group field. Interesting: it appears that the grouping code and the facet code are not being consistent in how they are building hte field cache, so you are getting two objects in the cache for each segment I haven't checked if this happens much with the example configs, but if you could: please file a bug with the details of which Solr version you are using along with the schema fieldType & filed declarations for your merchantid field, along with the mbean stats output showing the field cache insanity after executing two queries like... /select?q=*:*&facet=true&facet.field=merchantid /select?q=*:*&group=true&group.field=merchantid (that way we can rule out your custom SearchComponent as having a bug in it) : This insanity can have performance impact ? : How can I fix it ? the impact is just that more ram is being used them is probably strictly neccessary. unless there is something unusual in your fieldType delcataion, i don't think there is an easy fix you can apply -- we need to fix the underlying code. -Hoss
