In the solr admin stats page I see multiple index searchers open. My
understanding is there will be two searchers open during replication and
only one otherwise. We have a multicore setup with 8 cores in the server
(each core with its own index). And we have master-slave replication setup.
Our replication poll interval is every 5 mins. Here is the information from
stats page for one of the cores
name: Searcher@56231e00 main
class: org.apache.solr.search.SolrIndexSearcher
version: 1.0
description: index searcher
stats: searcherName : Searcher@56231e00 main
caching : true
numDocs : 936408
maxDoc : 936592
reader :
SolrIndexReader{this=511a90e2,r=ReadOnlyDirectoryReader@511a90e2,refCnt=1,segments=16}
readerDir :
org.apache.lucene.store.NIOFSDirectory@/cacheDir/lucene/ns02/data/index
lockFactory=org.apache.lucene.store.NativeFSLockFactory@35896b6
indexVersion : 1343339555090
openedAt : Thu Aug 09 17:40:01 PDT 2012
registeredAt : Thu Aug 09 17:40:14 PDT 2012
warmupTime : 3600
name: core
class: ns02
version: 1.0
description: SolrCore
stats: coreName : ns02
startTime : Thu Aug 09 17:24:21 PDT 2012
refCount : 2
aliases : [ns02]
name: searcher
class: org.apache.solr.search.SolrIndexSearcher
version: 1.0
description: index searcher
stats: searcherName : Searcher@56231e00 main
caching : true
numDocs : 936408
maxDoc : 936592
reader :
SolrIndexReader{this=511a90e2,r=ReadOnlyDirectoryReader@511a90e2,refCnt=1,segments=16}
readerDir :
org.apache.lucene.store.NIOFSDirectory@/cacheDir/lucene/ns02/data/index
lockFactory=org.apache.lucene.store.NativeFSLockFactory@35896b6
indexVersion : 1343339555090
openedAt : Thu Aug 09 17:40:01 PDT 2012
registeredAt : Thu Aug 09 17:40:14 PDT 2012
warmupTime : 3600
name: Searcher@43234720 main
class: org.apache.solr.search.SolrIndexSearcher
version: 1.0
description: index searcher
stats: searcherName : Searcher@43234720 main
caching : true
numDocs : 836907
maxDoc : 836908
reader :
SolrIndexReader{this=143ed7c9,r=ReadOnlyDirectoryReader@143ed7c9,refCnt=1,segments=22}
readerDir :
org.apache.lucene.store.NIOFSDirectory@/cacheDir/lucene/ns02/data/index
lockFactory=org.apache.lucene.store.NativeFSLockFactory@35896b6
indexVersion : 1343339555061
openedAt : Thu Aug 09 17:24:21 PDT 2012
registeredAt : Thu Aug 09 17:24:39 PDT 2012
warmupTime : 0
name: Searcher@6fb8e6b9 main
class: org.apache.solr.search.SolrIndexSearcher
version: 1.0
description: index searcher
stats: searcherName : Searcher@6fb8e6b9 main
caching : true
numDocs : 916408
maxDoc : 916592
reader :
SolrIndexReader{this=4732ae19,r=ReadOnlyDirectoryReader@4732ae19,refCnt=1,segments=23}
readerDir :
org.apache.lucene.store.NIOFSDirectory@/cacheDir/lucene/ns02/data/index
lockFactory=org.apache.lucene.store.NativeFSLockFactory@35896b6
indexVersion : 1343339555084
openedAt : Thu Aug 09 17:25:12 PDT 2012
registeredAt : Thu Aug 09 17:25:27 PDT 2012
warmupTime : 5162
Note the refCount=1 for searchers. Also the num of segments and indexVersion
is different in each of the index searchers listed. Does it mean that there
is a leak somewhere and the index searcher doesnt close ?
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