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From "Dennis Klinkott (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2721) Broker hangs reading KahaDB data store
Date Wed, 05 May 2010 14:28:35 GMT
Broker hangs reading KahaDB data store
--------------------------------------

                 Key: AMQ-2721
                 URL: https://issues.apache.org/activemq/browse/AMQ-2721
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.1
         Environment: Red hat enterprise
            Reporter: Dennis Klinkott


Broker hangs on loading the data store. Happens after using the broker for 10 hours in productive
environment.

In broker log the last entries we see is a bunch of loading kahadb debug entries.
2010-05-05 16:06:19,462 | DEBUG | loading | org.apache.kahadb.index.BTreeIndex | main

But the broker doesn't stall completely. It is doing something with high cpu load. But it
doesn't get the data store loaded. Even after a few hours it doesn't get finished (usually
only takes a few seconds).

I took a few jstack-dumps where we can see the broker being busy putting something into a
hashmap.

We have 2 brokers connected as network of brokers.

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