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From "Sergey Evdokimov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-777) ConcurrentModificationException in TcpDiscoverySpi
Date Mon, 20 Apr 2015 20:38:58 GMT
Sergey Evdokimov created IGNITE-777:
---------------------------------------

             Summary: ConcurrentModificationException in TcpDiscoverySpi
                 Key: IGNITE-777
                 URL: https://issues.apache.org/jira/browse/IGNITE-777
             Project: Ignite
          Issue Type: Bug
    Affects Versions: sprint-3
            Reporter: Sergey Evdokimov


ConcurrentModificationException occurs if topology has one server node and one client. TcpDiscoveryHeartbeatMessage
processed in the RingMessageWorker two times. On the first processing RingMessageWorker adds
metrics of server node to the message and sends message to ClientMessageWorker. On the second
processing RingMessageWorker remove metrics, at same time ClientMessageWorker writes message
to socket.

{quote}
[18:07:23,975]ERROR[tcp-disco-client-message-worker-#1113%cache.GridCacheTcpClientDiscoveryMultiThreadedTest0][TcpDiscoverySpi]
Runtime error caught during grid runnable execution: IgniteSpiThread [name=tcp-disco-client-message-worker-#1113%cache.GridCacheTcpClientDiscoveryMultiThreadedTest0]
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
	at java.util.HashMap$EntryIterator.next(HashMap.java:962)
	at java.util.HashMap$EntryIterator.next(HashMap.java:960)
	at java.util.HashMap.writeObject(HashMap.java:1127)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
	at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal(JdkMarshaller.java:73)
	at org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpiAdapter.writeToSocket(TcpDiscoverySpiAdapter.java:460)
	at org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpiAdapter$MessageWorkerAdapter.writeToSocket(TcpDiscoverySpiAdapter.java:1044)
	at org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi$ClientMessageWorker.processMessage(TcpDiscoverySpi.java:5221)
{quote}



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