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Date: Wed, 5 May 2010 01:16:44 -0400 (EDT)
From: "Hondong (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Commented: (AMQ-1063) Journaled JDBC checkpoint fails with
 java.io.IOException: Already started.
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    [ https://issues.apache.org/activemq/browse/AMQ-1063?page=3Dcom.atlassi=
an.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D59=
196#action_59196 ]=20

Hondong commented on AMQ-1063:
------------------------------

We even have the same Issue under ActiveMQ 4.1.2 and Oracle DS
It seems, that it appear under heavy Load?

I=C2=B4ll try to reproduce it with debugging enabled...

> Journaled JDBC checkpoint fails with java.io.IOException: Already started=
.
> -------------------------------------------------------------------------=
-
>
>                 Key: AMQ-1063
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1063
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.0.0
>         Environment: Windows XP Professional, JVM 1.5.0_09, MySQL 5.0.27
>            Reporter: jk@penguinsfan.com
>             Fix For: NEEDS_REVIEWED
>
>
> I am running trunk using JDBC against MySQL 5.0.27.  I am seeing the abov=
e mentioned IOException.  Do not have specific instructions on how to repro=
duce at the current time, but I was using durable subscriptions with the st=
ore durable cursor if that helps.  (I'll post if I find out more informatio=
n.)
>       <persistenceAdapter>
>   =20
>       <journaledJDBC journalLogFiles=3D"5" dataDirectory=3D"../activemq-d=
ata" dataSource=3D"#mysql-ds"/>
>     </persistenceAdapter>
>   <bean id=3D"mysql-ds" class=3D"org.apache.commons.dbcp.BasicDataSource"=
 destroy-method=3D"close">
>     <property name=3D"driverClassName" value=3D"com.mysql.jdbc.Driver"/>
>     <property name=3D"url" value=3D"jdbc:mysql://localhost/activemq?relax=
AutoCommit=3Dtrue"/>
>     <property name=3D"username" value=3D"*** OMITTED ***"/>
>     <property name=3D"password" value=3D"*** OMITTED *** "/>
>     <property name=3D"poolPreparedStatements" value=3D"true"/>
>   </bean> =20
> Log trace:
> 2006-11-19 19:19:48,078 [/127.0.0.1:4898] DEBUG JournalPersistenceAdapter=
      - Waking for checkpoint to complete.
> 2006-11-19 19:19:48,078 [eckpoint Worker] DEBUG JournalPersistenceAdapter=
      - Checkpoint started.
> 2006-11-19 19:19:48,078 [eckpoint Worker] ERROR JournalPersistenceAdapter=
      - Failed to checkpoint a message store: java.util.concurrent.Executio=
nException: java.io.IOException: Already started.
> java.util.concurrent.ExecutionException: java.io.IOException: Already sta=
rted.
> =09at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:205)
> =09at java.util.concurrent.FutureTask.get(FutureTask.java:80)
> =09at org.apache.activemq.store.journal.JournalPersistenceAdapter.doCheck=
point(JournalPersistenceAdapter.java:386)
> =09at org.apache.activemq.store.journal.JournalPersistenceAdapter$2.itera=
te(JournalPersistenceAdapter.java:129)
> =09at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTas=
kRunner.java:88)
> =09at org.apache.activemq.thread.DedicatedTaskRunner.access$0(DedicatedTa=
skRunner.java:76)
> =09at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskR=
unner.java:39)
> Caused by: java.io.IOException: Already started.
> =09at org.apache.activemq.store.jdbc.TransactionContext.begin(Transaction=
Context.java:145)
> =09at org.apache.activemq.store.jdbc.JDBCPersistenceAdapter.beginTransact=
ion(JDBCPersistenceAdapter.java:358)
> =09at org.apache.activemq.store.journal.JournalPersistenceAdapter.beginTr=
ansaction(JournalPersistenceAdapter.java:189)
> =09at org.apache.activemq.util.TransactionTemplate.run(TransactionTemplat=
e.java:41)
> =09at org.apache.activemq.store.journal.JournalMessageStore.checkpoint(Jo=
urnalMessageStore.java:247)
> =09at org.apache.activemq.store.journal.JournalTopicMessageStore.checkpoi=
nt(JournalTopicMessageStore.java:162)
> =09at org.apache.activemq.store.journal.JournalPersistenceAdapter$5.call(=
JournalPersistenceAdapter.java:373)
> =09at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
> =09at java.util.concurrent.FutureTask.run(FutureTask.java:123)
> =09at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolEx=
ecutor.java:650)
> =09at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecut=
or.java:675)
> =09at java.lang.Thread.run(Thread.java:595)
> 2006-11-19 19:19:48,109 [eckpoint Worker] DEBUG JournalPersistenceAdapter=
      - Checkpoint done.

--=20
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