Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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8.0
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None
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None
Description
FacetProcessor.java :: handleJoinField calls SolrIndexSearcher.getDocSet(..domainquery..) which eventually cache join queries like:
key:{ !join from=[vin_l-value] to=[vin_l-value] } { !cache=false } ConstantScore(BitSetDocTopFilter)
value: org.apache.solr.search.SortedIntDocSet@40886054 lastAccessed:824,
and when we execute the same query again, some of the entries are not getting used at all. Please note: the filterCache entries are not getting used strictly when we have more than 1 shard in the collection.
Sample: car_stuff collection with multiple doc-types: vehicle, claims, defects - 10 shards
http://localhost:8983/solr/car_stuff/query?rows=0&q=doc_type_s:vehicle AND v_model_s:model_009&json.facet={ models:{ type:terms, field:"v_model_s", limit:-1, facet:{ year_per_model:{ type:terms, field:"v_year_i", limit:-1, facet:{ claim_month:{ domain:{ join:{ from:"vin_l", to:"vin_l" }, filter:"doc_type_s:claim" }, type:terms, field:"claim_opcode_s", limit:-1 } } } } } }
After executing this query for first time, filterCache for one of the cores looks like:
"CACHE.searcher.filterCache":{
"lookups":151,
"hits":49,
"cumulative_evictions":0,
"size":103,
"hitratio":0.32,
"evictions":0,
"cumulative_lookups":151,
"cumulative_hitratio":0.32,
"warmupTime":0,
"inserts":103,
"cumulative_inserts":103,
"cumulative_hits":49}
2nd time executing same query:
"CACHE.searcher.filterCache":{
"lookups":303,
"hits":151,
"cumulative_evictions":0,
"size":153,
"hitratio":0.5,
"evictions":0,
"cumulative_lookups":303,
"cumulative_hitratio":0.5,
"warmupTime":0,
"inserts":153,
"cumulative_inserts":153,
"cumulative_hits":151}
Looking into the entries of the filterCache looks like this:
.....
key: v_year_i:[1977 TO 1977] value: org.apache.solr.search.BitDocSet@1524fa9c lastAccessed:457,
key: v_model_s:model_003 value: org.apache.solr.search.BitDocSet@61f348dd lastAccessed:157,
key:{ !join from=[vin_l-value] to=[vin_l-value] } { !cache=false } ConstantScore(BitSetDocTopFilter)
value: org.apache.solr.search.SortedIntDocSet@40886054 lastAccessed:824,
.....
The collection backup is uploaded on the JIRA.