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https://issues.apache.org/jira/browse/SOLR-5592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13859127#comment-13859127
]
Mark Miller commented on SOLR-5592:
-----------------------------------
Stack traces from Solr 4.4 with some backports on it. It is deadlocked in
getSearcher.
{noformat}
"coreLoadExecutor-4-thread-1" prio=10 tid=0x00007fd0a84cc000 nid=0x5991 in
Object.wait() [0x00007fd0ac9e2000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d0772c60> (a java.lang.Object)
at java.lang.Object.wait(Object.java:485)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1596)
- locked <0x00000000d0772c60> (a java.lang.Object)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1405)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1340)
at
org.apache.solr.handler.ReplicationHandler.getIndexVersion(ReplicationHandler.java:546)
at
org.apache.solr.handler.ReplicationHandler.getStatistics(ReplicationHandler.java:563)
at
org.apache.solr.core.JmxMonitoredMap$SolrDynamicMBean.getMBeanInfo(JmxMonitoredMap.java:231)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getNewMBeanClassName(DefaultMBeanServerInterceptor.java:321)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:307)
at
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
at org.apache.solr.core.JmxMonitoredMap.put(JmxMonitoredMap.java:140)
at org.apache.solr.core.JmxMonitoredMap.put(JmxMonitoredMap.java:51)
at
org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:647)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:855)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:634)
at org.apache.solr.core.ZkContainer.createFromZk(ZkContainer.java:270)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:678)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:387)
at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:379)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
"searcherExecutor-5-thread-1" prio=10 tid=0x00007fd098138800 nid=0x599a in
Object.wait() [0x00007fd073ffb000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d0772c60> (a java.lang.Object)
at java.lang.Object.wait(Object.java:485)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1596)
- locked <0x00000000d0772c60> (a java.lang.Object)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1405)
at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1340)
at
org.apache.solr.request.SolrQueryRequestBase.getSearcher(SolrQueryRequestBase.java:96)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:237)
at
org.apache.solr.spelling.SpellCheckCollator.collate(SpellCheckCollator.java:146)
at
org.apache.solr.handler.component.SpellCheckComponent.addCollationsToResponse(SpellCheckComponent.java:229)
at
org.apache.solr.handler.component.SpellCheckComponent.process(SpellCheckComponent.java:196)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:208)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1909)
at
org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:64)
at org.apache.solr.core.SolrCore$5.call(SolrCore.java:1698)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
> Possible deadlock on startup if using warming queries and certain components
> and jmx.
> -------------------------------------------------------------------------------------
>
> Key: SOLR-5592
> URL: https://issues.apache.org/jira/browse/SOLR-5592
> Project: Solr
> Issue Type: Bug
> Reporter: Mark Miller
> Assignee: Mark Miller
> Fix For: 5.0, 4.7, 4.6.1
>
>
> Seeing the case with a spellcheck component.
> We attempt to register JMX properties after we open the first searcher in
> core init, but we can still have a race for the first searcher open because
> first we call getSearcher and it can trigger concurrent warming queries that
> can trigger components that call getSearcher.
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