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Posted to dev@lucene.apache.org by "Lev Priima (JIRA)" <ji...@apache.org> on 2016/06/14 13:18:13 UTC
[jira] [Comment Edited] (SOLR-9208) ConcurrentModificationException
on SolrCore.close() resulting in abnormal CPU consumption
[ https://issues.apache.org/jira/browse/SOLR-9208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329478#comment-15329478 ]
Lev Priima edited comment on SOLR-9208 at 6/14/16 1:18 PM:
-----------------------------------------------------------
"thread-safe" init and modification example:
https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/core/SolrCore.java#L1272
was (Author: lpriima):
"Thread-safe" init:
https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/core/SolrCore.java#L1272
> ConcurrentModificationException on SolrCore.close() resulting in abnormal CPU consumption
> -----------------------------------------------------------------------------------------
>
> Key: SOLR-9208
> URL: https://issues.apache.org/jira/browse/SOLR-9208
> Project: Solr
> Issue Type: Bug
> Components: multicore, Server
> Affects Versions: 6.0
> Reporter: Fabrizio Fortino
>
> In our use case we swap two cores and close the old one. We started seeing the below error from time to time (it's completely random, we are unable to reproduce it). Moreover we have noticed that when this Exception is thrown the CPU consumption goes pretty high (80-100%).
> Error Message:
> java.util.ConcurrentModificationException: java.util.ConcurrentModificationException
> StackTrace:
> java.util.ArrayList$Itr.checkForComodification (ArrayList.java:901)
> java.util.ArrayList$Itr.next (ArrayList.java:851)
> org.apache.solr.core.SolrCore.close (SolrCore.java:1134)
> org.apache.solr.servlet.HttpSolrCall.destroy (HttpSolrCall.java:513)
> org.apache.solr.servlet.SolrDispatchFilter.doFilter (SolrDispatchFilter.java:242)
> org.apache.solr.servlet.SolrDispatchFilter.doFilter (SolrDispatchFilter.java:184)
> …ipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
> org.eclipse.jetty.servlet.ServletHandler.doHandle (ServletHandler.java:581)
> org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:143)
> org.eclipse.jetty.security.SecurityHandler.handle (SecurityHandler.java:548)
> …g.eclipse.jetty.server.session.SessionHandler.doHandle (SessionHandler.java:226)
> …g.eclipse.jetty.server.handler.ContextHandler.doHandle (ContextHandler.java:1160)
> org.eclipse.jetty.servlet.ServletHandler.doScope (ServletHandler.java:511)
> org.eclipse.jetty.server.session.SessionHandler.doScope (SessionHandler.java:185)
> org.eclipse.jetty.server.handler.ContextHandler.doScope (ContextHandler.java:1092)
> org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:141)
> …e.jetty.server.handler.ContextHandlerCollection.handle (ContextHandlerCollection.java:213)
> ….eclipse.jetty.server.handler.HandlerCollection.handle (HandlerCollection.java:119)
> org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:134)
> org.eclipse.jetty.server.Server.handle (Server.java:518)
> org.eclipse.jetty.server.HttpChannel.handle (HttpChannel.java:308)
> org.eclipse.jetty.server.HttpConnection.onFillable (HttpConnection.java:244)
> …pse.jetty.io.AbstractConnection$ReadCallback.succeeded (AbstractConnection.java:273)
> org.eclipse.jetty.io.FillInterest.fillable (FillInterest.java:95)
> org.eclipse.jetty.io.SelectChannelEndPoint$2.run (SelectChannelEndPoint.java:93)
> …il.thread.strategy.ExecuteProduceConsume.produceAndRun (ExecuteProduceConsume.java:246)
> …e.jetty.util.thread.strategy.ExecuteProduceConsume.run (ExecuteProduceConsume.java:156)
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob (QueuedThreadPool.java:654)
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run (QueuedThreadPool.java:572)
> java.lang.Thread.run (Thread.java:745)
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