[
https://issues.apache.org/jira/browse/SOLR-3993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488596#comment-13488596
]
Markus Jelsma commented on SOLR-3993:
-------------------------------------
We're seeing this too using a current trunk on a 10 node test cluster. We can
trigger this state if we restart all servlet containers sequentially or roughly
at the same time, most nodes are stuck in this state too while others sometimes
change to a different state throwing all kinds of exceptions (see list). We can
only get out of this state by restarting some servlet containers again. It does
_not_ happen at all with Zookeeper's data directory wiped clean. The cluster
then starts very nicely.
> SolrCloud leader election on single node stucks the initialization
> ------------------------------------------------------------------
>
> Key: SOLR-3993
> URL: https://issues.apache.org/jira/browse/SOLR-3993
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.0
> Environment: Windows 7, Tomcat 6
> Reporter: Alexey Kudinov
>
> setup:
> 1 node, 4 cores, 2 shards.
> 15 documents indexed.
> problem:
> init stage times out.
> probable cause:
> According to the init flow, cores are initialized one by one synchronously.
> Actually, the main thread waits
> ShardLeaderElectionContext.waitForReplicasToComeUp until retry threshold,
> while replica cores are not yet initialized, in other words there is no
> chance other replicas go up in the meanwhile.
> stack trace:
> Thread [main] (Suspended)
> owns: HashMap<K,V> (id=3876)
> owns: StandardContext (id=3877)
> owns: HashMap<K,V> (id=3878)
> owns: StandardHost (id=3879)
> owns: StandardEngine (id=3880)
> owns: Service[] (id=3881)
> Thread.sleep(long) line: not available [native method]
> ShardLeaderElectionContext.waitForReplicasToComeUp(boolean, String)
> line: 298
> ShardLeaderElectionContext.runLeaderProcess(boolean) line: 143
> LeaderElector.runIamLeaderProcess(ElectionContext, boolean) line: 152
> LeaderElector.checkIfIamLeader(int, ElectionContext, boolean) line: 96
> LeaderElector.joinElection(ElectionContext) line: 262
> ZkController.joinElection(CoreDescriptor, boolean) line: 733
> ZkController.register(String, CoreDescriptor, boolean, boolean) line:
> 566
> ZkController.register(String, CoreDescriptor) line: 532
> CoreContainer.registerInZk(SolrCore) line: 709
> CoreContainer.register(String, SolrCore, boolean) line: 693
> CoreContainer.load(String, InputSource) line: 535
> CoreContainer.load(String, File) line: 356
> CoreContainer$Initializer.initialize() line: 308
> SolrDispatchFilter.init(FilterConfig) line: 107
> ApplicationFilterConfig.getFilter() line: 295
> ApplicationFilterConfig.setFilterDef(FilterDef) line: 422
> ApplicationFilterConfig.<init>(Context, FilterDef) line: 115
> StandardContext.filterStart() line: 4072
> StandardContext.start() line: 4726
> StandardHost(ContainerBase).addChildInternal(Container) line: 799
> StandardHost(ContainerBase).addChild(Container) line: 779
> StandardHost.addChild(Container) line: 601
> HostConfig.deployDescriptor(String, File, String) line: 675
> HostConfig.deployDescriptors(File, String[]) line: 601
> HostConfig.deployApps() line: 502
> HostConfig.start() line: 1317
> HostConfig.lifecycleEvent(LifecycleEvent) line: 324
> LifecycleSupport.fireLifecycleEvent(String, Object) line: 142
> StandardHost(ContainerBase).start() line: 1065
> StandardHost.start() line: 840
> StandardEngine(ContainerBase).start() line: 1057
> StandardEngine.start() line: 463
> StandardService.start() line: 525
> StandardServer.start() line: 754
> Catalina.start() line: 595
> NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not
> available [native method]
> NativeMethodAccessorImpl.invoke(Object, Object[]) line: not available
> DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: not
> available
> Method.invoke(Object, Object...) line: not available
> Bootstrap.start() line: 289
> Bootstrap.main(String[]) line: 414
>
> After a while, the session times out and following exception appears:
> Oct 25, 2012 1:16:56 PM org.apache.solr.cloud.ShardLeaderElectionContext
> waitForReplicasToComeUp
> INFO: Waiting until we see more replicas up: total=2 found=0 timeoutin=-95
> Oct 25, 2012 1:16:56 PM org.apache.solr.cloud.ShardLeaderElectionContext
> waitForReplicasToComeUp
> INFO: Was waiting for replicas to come up, but they are taking too long -
> assuming they won't come back till later
> Oct 25, 2012 1:16:56 PM org.apache.solr.common.SolrException log
> SEVERE: Errir checking for the number of election
> participants:org.apache.zookeeper.KeeperException$SessionExpiredException:
> KeeperErrorCode = Session expired for
> /collections/collection1/leader_elect/shard2/election
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1249)
> at
> org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:227)
> at
> org.apache.solr.common.cloud.SolrZkClient$6.execute(SolrZkClient.java:224)
> at
> org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:63)
> at
> org.apache.solr.common.cloud.SolrZkClient.getChildren(SolrZkClient.java:224)
> at
> org.apache.solr.cloud.ShardLeaderElectionContext.waitForReplicasToComeUp(ElectionContext.java:276)
> at
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:143)
> at
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:152)
> at
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:96)
> at
> org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:262)
> at
> org.apache.solr.cloud.ZkController.joinElection(ZkController.java:733)
> at org.apache.solr.cloud.ZkController.register(ZkController.java:566)
> at org.apache.solr.cloud.ZkController.register(ZkController.java:532)
> at
> org.apache.solr.core.CoreContainer.registerInZk(CoreContainer.java:709)
> at org.apache.solr.core.CoreContainer.register(CoreContainer.java:693)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:535)
> at org.apache.solr.core.CoreContainer.load(CoreContainer.java:356)
> at
> org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:308)
> at
> org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:107)
> at
> org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
> at
> org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
> at
> org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
> at
> org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4072)
> at
> org.apache.catalina.core.StandardContext.start(StandardContext.java:4726)
> at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
> at
> org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
> at
> org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
> at
> org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
> at
> org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
> at
> org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
> at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
> at
> org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
> at
> org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
> at
> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
> at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
> at
> org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
> at
> org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
> at
> org.apache.catalina.core.StandardService.start(StandardService.java:525)
> at
> org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
> at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
> at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
> Followed by:
> Oct 25, 2012 1:17:27 PM org.apache.solr.cloud.RecoveryStrategy doRecovery
> SEVERE: Recovery failed - trying again... core=collection1
> Oct 25, 2012 1:18:32 PM org.apache.solr.common.SolrException log
> SEVERE: Error while trying to recover. core=collection1
> Oct 25, 2012 1:18:32 PM org.apache.solr.common.SolrException log
> SEVERE: Error while trying to recover.
> core=collection1:org.apache.solr.common.SolrException: No registered leader
> was found, collection:collection1 slice:shard1
> at
> org.apache.solr.common.cloud.ZkStateReader.getLeaderProps(ZkStateReader.java:413)
> at
> org.apache.solr.common.cloud.ZkStateReader.getLeaderProps(ZkStateReader.java:399)
> at
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:318)
> at
> org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:220)
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
