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From "Swen Moczarski (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2284) ClassCastException in KahaDB
Date Mon, 08 Jun 2009 09:34:39 GMT
ClassCastException in KahaDB
----------------------------

                 Key: AMQ-2284
                 URL: https://issues.apache.org/activemq/browse/AMQ-2284
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.3.0
         Environment: Linux, activemq-core and kahadb 5.3-SNAPSHOT from 2009-06-02
            Reporter: Swen Moczarski


We test the broker with the Kaha message store. After some time we get lots of class cast
exceptions:

{noformat}
[2009-06-06 06:01:22,047] [QueueThread:queue://xxx] [ERROR] [org.apache.activemq.broker.region.cursors.AbstractStoreCursor]
[Failed to fill batch]
java.lang.ClassCastException: java.lang.Long cannot be cast to org.apache.activemq.store.kahadb.MessageDatabase$MessageKeys
        at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$4.execute(KahaDBStore.java:228)
        at org.apache.kahadb.page.Transaction.execute(Transaction.java:728)
        at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recoverNextMessages(KahaDBStore.java:221)
        at org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:81)
        at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:227)
        at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.hasNext(AbstractStoreCursor.java:134)
        at org.apache.activemq.broker.region.cursors.StoreQueueCursor.hasNext(StoreQueueCursor.java:131)
        at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1280)
        at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1419)
        at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1103)
        at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84)
        at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
[2009-06-06 06:01:22,048] [QueueThread:queue://xxx] [ERROR] [org.apache.activemq.broker.region.cursors.AbstractStoreCursor]
[Failed to fill batch]
java.lang.RuntimeException: java.lang.ClassCastException: java.lang.Long cannot be cast to
org.apache.activemq.store.kahadb.MessageDatabase$MessageKeys
        at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:230)
        at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.hasNext(AbstractStoreCursor.java:134)
        at org.apache.activemq.broker.region.cursors.StoreQueueCursor.hasNext(StoreQueueCursor.java:131)
        at org.apache.activemq.broker.region.Queue.doPageIn(Queue.java:1280)
        at org.apache.activemq.broker.region.Queue.pageInMessages(Queue.java:1419)
        at org.apache.activemq.broker.region.Queue.iterate(Queue.java:1103)
        at org.apache.activemq.thread.DeterministicTaskRunner.runTask(DeterministicTaskRunner.java:84)
        at org.apache.activemq.thread.DeterministicTaskRunner$1.run(DeterministicTaskRunner.java:41)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to org.apache.activemq.store.kahadb.MessageDatabase$MessageKeys
        at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$4.execute(KahaDBStore.java:228)
        at org.apache.kahadb.page.Transaction.execute(Transaction.java:728)
        at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recoverNextMessages(KahaDBStore.java:221)
        at org.apache.activemq.broker.region.cursors.QueueStorePrefetch.doFillBatch(QueueStorePrefetch.java:81)
        at org.apache.activemq.broker.region.cursors.AbstractStoreCursor.fillBatch(AbstractStoreCursor.java:227)
        ... 10 more
{noformat}

For the messages we use the persistence delivery mode. 

Our configuration (in Spring) for the persistance adapter:

{code:xml} 
<property name="persistenceAdapter">
   <bean class="org.apache.activemq.store.kahadb.KahaDBStore">
      <property name="directory" value="/message/store/dir" />
   </bean>
</property>
{code} 

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