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https://issues.apache.org/jira/browse/SOLR-8251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15115281#comment-15115281
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Stephan Lagraulet commented on SOLR-8251:
-----------------------------------------
When Solr5 is under heavy load yourkit reports some deadlocks, not sure if it
is real deadlocks or if it is the monitoring overhead:
Frozen threads found (potential deadlock)
{code}
It seems that the following threads have not changed their stack for more than
10 seconds.
These threads are possibly (but not necessarily!) in a deadlock or hung.
qtp1983747920-155 <--- Frozen for at least 2m 18 sec
org.apache.lucene.uninverting.FieldCacheImpl$Cache.get(LeafReader,
FieldCacheImpl$CacheKey, boolean) FieldCacheImpl.java:187
org.apache.lucene.uninverting.FieldCacheImpl.getDocTermOrds(LeafReader, String,
BytesRef) FieldCacheImpl.java:933
org.apache.lucene.uninverting.UninvertingReader.getSortedSetDocValues(String)
UninvertingReader.java:275
org.apache.lucene.index.FilterLeafReader.getSortedSetDocValues(String)
FilterLeafReader.java:454
org.apache.lucene.index.DocValues.getSortedSet(LeafReader, String)
DocValues.java:302
org.apache.lucene.search.SortedSetSortField$1.getSortedDocValues(LeafReaderContext,
String) SortedSetSortField.java:125
org.apache.lucene.search.FieldComparator$TermOrdValComparator.getLeafComparator(LeafReaderContext)
FieldComparator.java:767
org.apache.lucene.search.FieldValueHitQueue.getComparators(LeafReaderContext)
FieldValueHitQueue.java:183
org.apache.lucene.search.TopFieldCollector$SimpleFieldCollector.getLeafCollector(LeafReaderContext)
TopFieldCollector.java:164
org.apache.lucene.search.MultiCollector.getLeafCollector(LeafReaderContext)
MultiCollector.java:121
org.apache.lucene.search.IndexSearcher.search(List, Weight, Collector)
IndexSearcher.java:812
org.apache.lucene.search.IndexSearcher.search(Query, Collector)
IndexSearcher.java:535
org.apache.solr.search.SolrIndexSearcher.buildAndRunCollectorChain(SolrIndexSearcher$QueryResult,
Query, Collector, SolrIndexSearcher$QueryCommand, DelegatingCollector)
SolrIndexSearcher.java:202
org.apache.solr.search.SolrIndexSearcher.getDocListAndSetNC(SolrIndexSearcher$QueryResult,
SolrIndexSearcher$QueryCommand) SolrIndexSearcher.java:1768
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher$QueryResult,
SolrIndexSearcher$QueryCommand) SolrIndexSearcher.java:1487
org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher$QueryResult,
SolrIndexSearcher$QueryCommand) SolrIndexSearcher.java:557
org.apache.solr.handler.component.QueryComponent.process(ResponseBuilder)
QueryComponent.java:525
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SolrQueryRequest,
SolrQueryResponse) SearchHandler.java:273
org.apache.solr.handler.RequestHandlerBase.handleRequest(SolrQueryRequest,
SolrQueryResponse) RequestHandlerBase.java:156
org.apache.solr.core.SolrCore.execute(SolrRequestHandler, SolrQueryRequest,
SolrQueryResponse) SolrCore.java:2073
org.apache.solr.servlet.HttpSolrCall.execute(SolrQueryResponse)
HttpSolrCall.java:658
org.apache.solr.servlet.HttpSolrCall.call() HttpSolrCall.java:457
org.apache.solr.servlet.SolrDispatchFilter.doFilter(ServletRequest,
ServletResponse, FilterChain, boolean) SolrDispatchFilter.java:222
org.apache.solr.servlet.SolrDispatchFilter.doFilter(ServletRequest,
ServletResponse, FilterChain) SolrDispatchFilter.java:181
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletRequest,
ServletResponse) ServletHandler.java:1652
org.eclipse.jetty.servlet.ServletHandler.doHandle(String, Request,
HttpServletRequest, HttpServletResponse) ServletHandler.java:585
org.eclipse.jetty.server.handler.ScopedHandler.handle(String, Request,
HttpServletRequest, HttpServletResponse) ScopedHandler.java:143
org.eclipse.jetty.security.SecurityHandler.handle(String, Request,
HttpServletRequest, HttpServletResponse) SecurityHandler.java:577
org.eclipse.jetty.server.session.SessionHandler.doHandle(String, Request,
HttpServletRequest, HttpServletResponse) SessionHandler.java:223
org.eclipse.jetty.server.handler.ContextHandler.doHandle(String, Request,
HttpServletRequest, HttpServletResponse) ContextHandler.java:1127
org.eclipse.jetty.servlet.ServletHandler.doScope(String, Request,
HttpServletRequest, HttpServletResponse) ServletHandler.java:515
org.eclipse.jetty.server.session.SessionHandler.doScope(String, Request,
HttpServletRequest, HttpServletResponse) SessionHandler.java:185
org.eclipse.jetty.server.handler.ContextHandler.doScope(String, Request,
HttpServletRequest, HttpServletResponse) ContextHandler.java:1061
org.eclipse.jetty.server.handler.ScopedHandler.handle(String, Request,
HttpServletRequest, HttpServletResponse) ScopedHandler.java:141
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(String,
Request, HttpServletRequest, HttpServletResponse)
ContextHandlerCollection.java:215
org.eclipse.jetty.server.handler.HandlerCollection.handle(String, Request,
HttpServletRequest, HttpServletResponse) HandlerCollection.java:110
org.eclipse.jetty.server.handler.HandlerWrapper.handle(String, Request,
HttpServletRequest, HttpServletResponse) HandlerWrapper.java:97
org.eclipse.jetty.server.Server.handle(HttpChannel) Server.java:499
org.eclipse.jetty.server.HttpChannel.handle() HttpChannel.java:310
org.eclipse.jetty.server.HttpConnection.onFillable() HttpConnection.java:257
org.eclipse.jetty.io.AbstractConnection$2.run() AbstractConnection.java:540
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(Runnable)
QueuedThreadPool.java:635
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run() QueuedThreadPool.java:555
java.lang.Thread.run() Thread.java:745
{code}
> MatchAllDocsQuery is much slower in solr5.3.1 compare to solr4.7
> ----------------------------------------------------------------
>
> Key: SOLR-8251
> URL: https://issues.apache.org/jira/browse/SOLR-8251
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 5.3, 5.3.1
> Reporter: wei shen
> Fix For: 5.5
>
> Attachments: Solr 4 vs Solr 5.png
>
>
> I am trying to upgrade our production solr instance from 4.7 to 5.3.1.
> Unfortunately when I do load testing I find the MatchAllDocsQuery is much
> slower in solr 5.3.1 compare to 4.7. (solr 5.3.1 is faster in load test with
> queries other than MatchAllDocsQuery). I asked solr-user and discussed with
> Yonik Seeley. He confirmed that he can see the problem too comparing solr
> 5.3.1 and 4.10.
> here is the query I use:
> {code}
> q={!cache=false}*:*&fq=+categoryIdsPath:1001&fl=id&start=0&rows=2&debug=true
> {code}
> for me the query is consistently about 60-70% slower on solr5 than solr4.
> Yonik mentioned in his email "For me, 5.3.1
> is about 5x slower than 4.10 for this particular query."
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