[
https://issues.apache.org/jira/browse/SOLR-9414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Katherine Mora updated SOLR-9414:
---------------------------------
Description:
When having high volume of requests, the logs are filled with this exception.
I have tried to reproduce it by sending queries using JMeter and it only
happens when multiple queries are sent at the same time. I was able to
reproduce it using 1x1, 2x4, 5x2
{noformat}
null:java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:394)
at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413)
at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412)
at
org.apache.solr.common.params.ModifiableSolrParams.toString(ModifiableSolrParams.java:201)
at java.lang.String.valueOf(String.java:2849)
at java.lang.StringBuilder.append(StringBuilder.java:128)
at
org.apache.solr.request.SolrQueryRequestBase.toString(SolrQueryRequestBase.java:165)
at
org.apache.solr.search.stats.LocalStatsCache.get(LocalStatsCache.java:40)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:366)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:255)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at
org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1129)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
{noformat}
was:
When having high volume of requests, the logs are filled with this exception.
I was able to reproduce it using 1x1, 2x4, 5x2
{noformat}
null:java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:394)
at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413)
at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412)
at
org.apache.solr.common.params.ModifiableSolrParams.toString(ModifiableSolrParams.java:201)
at java.lang.String.valueOf(String.java:2849)
at java.lang.StringBuilder.append(StringBuilder.java:128)
at
org.apache.solr.request.SolrQueryRequestBase.toString(SolrQueryRequestBase.java:165)
at
org.apache.solr.search.stats.LocalStatsCache.get(LocalStatsCache.java:40)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:366)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:255)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at
org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1129)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
{noformat}
> ConcurrentModificationException due to high volume of requests
> --------------------------------------------------------------
>
> Key: SOLR-9414
> URL: https://issues.apache.org/jira/browse/SOLR-9414
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: search
> Affects Versions: 5.2.1
> Environment: CentOS Linux 7
> Reporter: Katherine Mora
>
> When having high volume of requests, the logs are filled with this
> exception. I have tried to reproduce it by sending queries using JMeter and
> it only happens when multiple queries are sent at the same time. I was able
> to reproduce it using 1x1, 2x4, 5x2
> {noformat}
> null:java.util.ConcurrentModificationException
> at
> java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:394)
> at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:413)
> at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:412)
> at
> org.apache.solr.common.params.ModifiableSolrParams.toString(ModifiableSolrParams.java:201)
> at java.lang.String.valueOf(String.java:2849)
> at java.lang.StringBuilder.append(StringBuilder.java:128)
> at
> org.apache.solr.request.SolrQueryRequestBase.toString(SolrQueryRequestBase.java:165)
> at
> org.apache.solr.search.stats.LocalStatsCache.get(LocalStatsCache.java:40)
> at
> org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:366)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:255)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
> at
> org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at
> org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1129)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.eclipse.jetty.server.Server.handle(Server.java:497)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
> at
> org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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