Atomikos Forum

2008-10-09 15:18:58,435 WARN Atomikos:134 [atomikos] Error in non-XA commit
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$EntryIterator.next(HashMap.java:832)
at com.atomikos.jdbc.nonxa.AtomikosNonXADataSourceBean.onXPooledConnectionTerminated(Unknown Source)
at com.atomikos.datasource.pool.AbstractXPooledConnection.fireOnXPooledConnectionTerminated(Unknown Source)
at com.atomikos.jdbc.nonxa.AtomikosNonXAPooledConnection.fireOnXPooledConnectionTerminated(Unknown Source)
at com.atomikos.jdbc.nonxa.AtomikosThreadLocalConnection.checkReusability(AtomikosThreadLocalConnection.java:311)
at com.atomikos.jdbc.nonxa.AtomikosThreadLocalConnection.transactionTerminated(AtomikosThreadLocalConnection.java:364)
at com.atomikos.jdbc.nonxa.AtomikosNonXAParticipant.commit(Unknown Source)
at com.atomikos.icatch.imp.CommitMessage.send(Unknown Source)
at com.atomikos.icatch.imp.PropagationMessage.submit(Unknown Source)
at com.atomikos.icatch.imp.Propagator$PropagatorThread.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
2008-10-09 15:18:58,435 WARN Atomikos:134 [atomikos] Unexpected error in commit
com.atomikos.icatch.HeurHazardException: Heuristic Exception
at com.atomikos.jdbc.nonxa.AtomikosNonXAParticipant.commit(Unknown Source)
at com.atomikos.icatch.imp.CommitMessage.send(Unknown Source)
at com.atomikos.icatch.imp.PropagationMessage.submit(Unknown Source)
at com.atomikos.icatch.imp.Propagator$PropagatorThread.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)

Noted - a case for the next bug fix release. Thanks.

Today I try fix it myself.
(Cannot wait longer for next release.)

And I maybe discovered next bug.

In file AtomikosNonXADataSourceBean.java is property

  private HashMap previousConnections;

and later in code

  previousConnections = new HashMap();

If I am right and this Map is accessed from more threads, then it must be :

  private Map previousConnections;
  previousConnections = Collections.synchronizedMap(new HashMap());

Else bad things happens :-)