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Posted to user@geronimo.apache.org by Donald Woods <dw...@apache.org> on 2008/04/14 14:51:05 UTC
Re: HOWL exception
Benjamin, did Kevan's proposed fix work for your scenario?
If so, we need to know ASAP, so we can pull the fix (GERONIMO-3930) into
the 2.1.1 release....
-Donald
Kevan Miller wrote:
>
> On Mar 14, 2008, at 6:25 AM, Tomasz Mazan wrote:
>
>>
>> Hi Guys
>> I got very ugly (and blocking) issue with HOWL.
>> After processing 20k request to my webservice whose are translated to
>> ~120k
>> XA transactions (postgres + jms) Geronimo hangs up and does not
>> respond on
>> requests via HTTP, request to JMS engine (from HermesJMS) and ignores
>> tries
>> to shutdown server.
>>
>> I stopped Geronimo with kill -9 and tried to start it again and got
>> exception:
>>
>> Module 11/69 org.apache.geronimo.configs/activemq-ra/2.1-SNAPSHOT/car
>> 10:22:15,325 ERROR [GBeanInstanceState] Error while starting; GBean is
>> now
>> in the FAILED state:
>> abstractName="org.apache.geronimo.configs/transaction/2.1-SNAPSHOT/car?ServiceModule=org.apache.geronimo.configs/transaction/2.1-SNAPSHOT/car,j2eeType=TransactionLog,name=HOWLTransactionLog"
>>
>> java.lang.IllegalArgumentException: Negative position
>> at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:613)
>> at
>> org.objectweb.howl.log.BlockLogBuffer.read(BlockLogBuffer.java:412)
>> at
>> org.objectweb.howl.log.LogFileManager.read(LogFileManager.java:641)
>
> Hi Beniamin,
> Looks like we're configuring HOWL to create an infinite number of blocks
> in the tx log files. I think we need to limit this to prevent this
> IllegalArgumentException. Try adding this to your config.xml:
>
> <module
> name="org.apache.geronimo.configs/transaction/2.1-SNAPSHOT/car">
> <gbean name="HOWLTransactionLog">
> <attribute name="maxBlocksPerFile">65534</attribute>
> </gbean>
> </module>
>
> By my calculations, 65,535 blocks * 32 kbytes per block = 2**31 - 1. I
> believe HOWL stores a file header in each log file. So, need to leave
> some room for that, also...
>
> Actually, might make sense to knock the maxBlocksPerFile size down even
> further for testing purposes... Also, would be great if you could run
> these tests with the latest AMQ and OpenEJB fixes to avoid the
> IllegalStateException's.
>
> I'm not entirely sure why your server became unresponsive. So, we may
> have some additional work to do...
>
> --kevan
>
>