[ https://issues.apache.org/jira/browse/CASSANDRA-2037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis resolved CASSANDRA-2037. --------------------------------------- Resolution: Duplicate yes, fixed for CASSANDRA-1959 > Unsafe Multimap Access in MessagingService > ------------------------------------------ > > Key: CASSANDRA-2037 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2037 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 0.7.0 > Reporter: Erik Onnen > Priority: Critical > > MessagingSerice is a system singleton with a static Multimap field targets. > Multimaps are not thread safe but no attempt is made to synchronize access to > that field. Multimap ultimately uses the standard java HashMap which is > susceptible to a race condition where threads will get stuck during a get > operation yielding multiple threads similar to the following stack: > "pool-1-thread-6451" prio=10 tid=0x00007fa5242c9000 nid=0x10f4 runnable > [0x00007fa52fde4000] > java.lang.Thread.State: RUNNABLE > at java.util.HashMap.get(HashMap.java:303) > at > com.google.common.collect.AbstractMultimap.getOrCreateCollection(AbstractMultimap.java:205) > at > com.google.common.collect.AbstractMultimap.put(AbstractMultimap.java:194) > at > com.google.common.collect.AbstractListMultimap.put(AbstractListMultimap.java:72) > at > com.google.common.collect.ArrayListMultimap.put(ArrayListMultimap.java:60) > at > org.apache.cassandra.net.MessagingService.sendRR(MessagingService.java:303) > at > org.apache.cassandra.service.StorageProxy.strongRead(StorageProxy.java:353) > at > org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:229) > at > org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:98) > at > org.apache.cassandra.thrift.CassandraServer.get(CassandraServer.java:289) > at > org.apache.cassandra.thrift.Cassandra$Processor$get.process(Cassandra.java:2655) > at > org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2555) > at > org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:167) > 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) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.