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Posted to solr-user@lucene.apache.org by srinir <ur...@gmail.com> on 2012/08/10 03:09:44 UTC

many open index searchers listed in stats page

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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