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Date: Wed, 2 Jun 2010 07:30:51 -0400 (EDT)
From: =?UTF-8?Q?Thomas_Sch=C3=B6ftner_=28JIRA=29?= <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Created: (AMQ-2757) AMQ startup fails during Startup due to
 NullPointerException in KahaDB
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AMQ startup fails during Startup due to NullPointerException in KahaDB
----------------------------------------------------------------------

                 Key: AMQ-2757
                 URL: https://issues.apache.org/activemq/browse/AMQ-2757
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.3.1, 5.3.0, 5.2.0
         Environment: Red Hat Enterprise Linux, Kernel V2.6.18
            Reporter: Thomas Sch=C3=B6ftner


During a long-time test run several message consumers listening to peristen=
t queues crashed.
The queues were filling up rapidly, so that KahaDB allocated 3GB of disk sp=
ace (max. limit 10GB) after 5hours (approx 800k messages).
At that point the broker was extremely slow and non-responsive to new messa=
ges.
JConsole showed that 1GB of RAM was used and most effort was necessary for =
garbage collection.
Although the max memory usage limit is configured to 1GB, AMQ should rather=
 allocate disc space for messages to queues without containers.

AMQ shutdown took extremely long (several limits).
The subsequent AMQ restart keeps failing with the following exception:
java.lang.NullPointerException
=09at org.apache.kahadb.index.BTreeNode$BTreeIterator.findNextPage(BTreeNod=
e.java:109)
=09at org.apache.kahadb.index.BTreeNode$BTreeIterator.hasNext(BTreeNode.jav=
a:120)
=09at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$4.exe=
cute(KahaDBStore.java:223)
=09at org.apache.kahadb.page.Transaction.execute(Transaction.java:728)
=09at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recov=
er(KahaDBStore.java:220)
=09at org.apache.activemq.broker.region.Queue.initialize(Queue.java:252)
=09at org.apache.activemq.broker.region.DestinationFactoryImpl.createDestin=
ation(DestinationFactoryImpl.java:83)
=09at org.apache.activemq.broker.region.AbstractRegion.createDestination(Ab=
stractRegion.java:464)
=09at org.apache.activemq.broker.jmx.ManagedQueueRegion.createDestination(M=
anagedQueueRegion.java:56)
=09at org.apache.activemq.broker.region.AbstractRegion.addDestination(Abstr=
actRegion.java:120)
=09at org.apache.activemq.broker.region.RegionBroker.addDestination(RegionB=
roker.java:268)
=09at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.j=
ava:142)
=09at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.j=
ava:142)
=09at org.apache.activemq.broker.MutableBrokerFilter.addDestination(Mutable=
BrokerFilter.java:149)
=09at org.apache.activemq.broker.region.AbstractRegion.start(AbstractRegion=
.java:94)
=09at org.apache.activemq.broker.region.RegionBroker.start(RegionBroker.jav=
a:178)
=09at org.apache.activemq.broker.jmx.ManagedRegionBroker.start(ManagedRegio=
nBroker.java:101)
=09at org.apache.activemq.broker.BrokerFilter.start(BrokerFilter.java:154)
=09at org.apache.activemq.broker.TransactionBroker.start(TransactionBroker.=
java:112)
=09at org.apache.activemq.broker.BrokerService$3.start(BrokerService.java:1=
713)
=09at org.apache.activemq.broker.BrokerService.start(BrokerService.java:473=
)
=09at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBean=
BrokerService.java:85)
=09at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
=09at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.=
java:39)
=09at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces=
sorImpl.java:25)
=09at java.lang.reflect.Method.invoke(Method.java:597)
...

The problem is reproducible also reproducible with recent nightly builds of=
 AMQ/Fuse 5.4.0.


-Tom

--=20
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