I really thought all of these kahaDB index corruption issues were
sorted, but if you can reproduce in 5.9 we have a problem that needs
work. the key to any resolution is a reproducible test case.

In any event, you should be able to recover by rebuilding the index,
just deleting the db.data file before a restart.

On 3 October 2013 17:04, Paul Gale <paul.n.g...@gmail.com> wrote:
> Anyone have any some thoughts about this?
>
> Thanks,
> Paul
>
> On Tue, Oct 1, 2013 at 12:50 AM, Paul Gale <paul.n.g...@gmail.com> wrote:
>> Hi,
>>
>> I'm using ActiveMQ 5.8.0 on RHEL 6.1
>>
>> I have noticed the following exception appearing in my broker's log
>> file. It appears to be related to the once hourly check for expired
>> messages, as these occur at _exactly_ the same time past the hour, as
>> given by the expireMessagesPeriod attribute on our topics. I have no
>> other scheduled checks that go off hourly. Scheduler support is set to
>> false for the broker (if that matters). The message store is located
>> on an NFS v3 mount.
>>
>> Any thoughts as to what could be causing this or if is this a
>> well-known issue that's fixed in 5.9.0? I couldn't find anything in
>> JIRA about this other than AMQ-3906 which was not resolved although
>> 'Chunk stream does not exist' has cropped up a few times it appears to
>> have been fixed in earlier releases.
>>
>> INFO   | jvm 1    | 2013/09/26 05:01:08.362 | WARN  | Topic
>>               | Failed to browse Topic: Auction.Event | ActiveMQ
>> Broker[queue01.qa1] Scheduler
>> INFO   | jvm 1    | 2013/09/26 05:01:08.362 | java.io.EOFException:
>> Chunk stream does not exist, page: 19 is marked free
>> INFO   | jvm 1    | 2013/09/26 05:01:08.362 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction$2.readPage(Transaction.java:470)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.362 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction$2.<init>(Transaction.java:447)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.362 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction.openInputStream(Transaction.java:444)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction.load(Transaction.java:420)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction.load(Transaction.java:377)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.index.BTreeIndex.loadNode(BTreeIndex.java:262)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.index.BTreeIndex.getRoot(BTreeIndex.java:174)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.index.BTreeIndex.iterator(BTreeIndex.java:232)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.MessageDatabase$MessageOrderIndex$MessageOrderIterator.<init>(MessageDatabase.java:2757)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.MessageDatabase$MessageOrderIndex.iterator(MessageDatabase.java:2739)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$3.execute(KahaDBStore.java:526)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.disk.page.Transaction.execute(Transaction.java:779)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recover(KahaDBStore.java:522)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.363 |   at
>> org.apache.activemq.store.ProxyTopicMessageStore.recover(ProxyTopicMessageStore.java:62)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> org.apache.activemq.broker.region.Topic.doBrowse(Topic.java:578)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> org.apache.activemq.broker.region.Topic.access$100(Topic.java:65)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> org.apache.activemq.broker.region.Topic$6.run(Topic.java:703)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> java.util.TimerThread.mainLoop(Timer.java:555)
>> INFO   | jvm 1    | 2013/09/26 05:01:08.364 |   at
>> java.util.TimerThread.run(Timer.java:505)
>>
>> Thanks,
>> Paul



-- 
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http://blog.garytully.com

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