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https://issues.apache.org/jira/browse/CASSANDRA-6103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikhail Stepura updated CASSANDRA-6103:
---------------------------------------
Attachment: cassandra-1.2-6103.patch
Patch for 1.2.
* Use read lock to read endpoints' collections, and return defensive copies
for them.
* Use write lock in {{updateHostId}}
> ConcurrentModificationException in TokenMetadata.cloneOnlyTokenMap
> ------------------------------------------------------------------
>
> Key: CASSANDRA-6103
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6103
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Mike Schrag
> Fix For: 1.2.11
>
> Attachments: cassandra-1.2-6103.patch
>
>
> This isn't reproducible for me, but it happened to one of the servers in our
> cluster while starting up. It went away on a restart, but I figured it was
> worth filing anyway:
> ERROR [main] 2013-09-26 08:04:02,478 CassandraDaemon.java (line 464)
> Exception encountered during startup
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
> at java.util.HashMap$EntryIterator.next(HashMap.java:834)
> at java.util.HashMap$EntryIterator.next(HashMap.java:832)
> at
> com.google.common.collect.AbstractBiMap$EntrySet$1.next(AbstractBiMap.java:294)
> at
> com.google.common.collect.AbstractBiMap$EntrySet$1.next(AbstractBiMap.java:286)
> at
> com.google.common.collect.AbstractBiMap.putAll(AbstractBiMap.java:160)
> at com.google.common.collect.HashBiMap.putAll(HashBiMap.java:42)
> at com.google.common.collect.HashBiMap.create(HashBiMap.java:72)
> at
> org.apache.cassandra.locator.TokenMetadata.cloneOnlyTokenMap(TokenMetadata.java:561)
> at
> org.apache.cassandra.locator.AbstractReplicationStrategy.getAddressRanges(AbstractReplicationStrategy.java:192)
> at
> org.apache.cassandra.service.StorageService.calculatePendingRanges(StorageService.java:1711)
> at
> org.apache.cassandra.service.StorageService.calculatePendingRanges(StorageService.java:1692)
> at
> org.apache.cassandra.service.StorageService.handleStateNormal(StorageService.java:1461)
> at
> org.apache.cassandra.service.StorageService.onChange(StorageService.java:1228)
> at
> org.apache.cassandra.gms.Gossiper.doNotifications(Gossiper.java:949)
> at
> org.apache.cassandra.gms.Gossiper.addLocalApplicationState(Gossiper.java:1116)
> at
> org.apache.cassandra.service.StorageService.setTokens(StorageService.java:214)
> at
> org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:802)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:554)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:451)
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