[Mulgara-general] "Couldn't construct node pool"
Paul Gearon
gearon at ieee.org
Tue Aug 5 21:20:57 UTC 2008
Ah, that would have been the problem. The SAIL system starts its own
store (right James?) and you can't share stores between applications.
So your error was due to the lock file. At least I have some logging
in there for that now.
Paul
On Tue, Aug 5, 2008 at 3:56 PM, Don Undeen <donundeen at gmail.com> wrote:
> thanks Paul.
> I was also had TopBraid Composer up, running a query against this store, so
> that may have had something to do with it.
> In any case, I restarted my machine, and that seemed to do the trick.
>
> On Tue, Aug 5, 2008 at 4:09 PM, Paul Gearon <gearon at ieee.org> wrote:
>>
>> Hi Don,
>>
>> No, I haven't seen this before, sorry.
>>
>> The underlying exception that throws this is an IOException. I just
>> checked some of the operations involved, looking for what can throw an
>> IOException. The operations I saw are mostly opening/writing files,
>> and also being unable to acquire a lock file.
>>
>> So the first thing to check is if you have read/write permission for
>> the directories you're in (I'm guessing you already did that?)
>>
>> The other thing is to do with the lock files. I've seen files (not
>> Mulgara's) erroneously reporting that they were locked in Java on
>> Windows when they weren't. So I guess there are several things that
>> can be going wrong.
>>
>> Did you get this error when you started up the first time, or on a
>> subsequent run? (even if the first runs fell over due to some other
>> problem). Can you try wiping the data directories and start again?
>>
>> Also, which Mulgara-jar do you have SAIL using? Did you build it
>> yourself? If so, then I put in a little more logging for that error
>> into SVN. You could pull it down and see what it says.
>>
>> Regards,
>> Paul Gearon
>>
>> On Tue, Aug 5, 2008 at 2:22 PM, Don Undeen <donundeen at gmail.com> wrote:
>> > Hi, I'm trying to connect to a mulgara db using sesame 2.2beta1 API, and
>> > I'm
>> > getting a "Couldn't construct node pool" error.
>> >
>> > using:
>> > openrdf-mulgara-1.3-beta
>> > openrdf-mulgara-sail-2.2-beta2
>> > sesame2.2beta2
>> >
>> > Here's my code:
>> >
>> > import org.openrdf.*;
>> > import org.openrdf.repository.Repository;
>> > import org.openrdf.repository.sail.SailRepository;
>> > import org.openrdf.sail.memory.MemoryStore;
>> > import org.openrdf.sail.mulgara.*;
>> > import org.openrdf.OpenRDFException;
>> > import org.openrdf.repository.RepositoryConnection;
>> > import org.openrdf.rio.RDFFormat;
>> > import javax.transaction.TransactionManager;
>> > import java.io.File;
>> >
>> > public class TestSesame {
>> >
>> > /**
>> > * @param args
>> > */
>> > public static void main(String[] args) {
>> > try{
>> > File dataDir = new File("C:\\Documents and
>> > Settings\\LocalService\\Application
>> > Data\\Aduna\\OpenRDF\\Sesame\\repositories\\mulgaraTms\\");
>> > Repository myRepository = new SailRepository(new
>> > MulgaraStore(dataDir));
>> > myRepository.initialize();
>> > RepositoryConnection conn = myRepository.getConnection();
>> >
>> > }catch(Exception e){
>> > System.out.println("had error " +e.getMessage() );
>> > }
>> > }
>> > }
>> >
>> >
>> >
>> > The message I'm getting is:
>> > had error org.mulgara.store.nodepool.NodePoolException: Couldn't
>> > construct
>> > node pool
>> >
>> > Does anyone know what this means?
>> >
>> >
>> > thanks!!
>> >
>> > don
>> >
>> > full output below:
>> > 15:12:57.932 [main] INFO org.objectweb.jotm - JOTM started with a local
>> > transaction factory which is not bound.
>> > 15:12:57.932 [main] INFO org.objectweb.jotm - CAROL initialization
>> > 15:12:57.948 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Return
>> > empty
>> > properties, URL is null
>> > 15:12:57.964 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Build
>> > protocol
>> > object for protocol name found 'cmi'.
>> > 15:12:57.979 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Cmi is not
>> > available, don't configure it.
>> > 15:12:57.979 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Build
>> > protocol
>> > object for protocol name found 'jeremie'.
>> > 15:12:57.979 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Build
>> > protocol
>> > object for protocol name found 'iiop'.
>> > 15:12:57.979 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Build
>> > protocol
>> > object for protocol name found 'irmi'.
>> > 15:12:57.979 [main] DEBUG o.o.c.u.c.ConfigurationRepository - Build
>> > protocol
>> > object for protocol name found 'jrmp'.
>> > 15:12:57.979 [main] INFO o.o.c.u.c.ConfigurationRepository - No
>> > protocols
>> > were defined for property 'carol.protocols', trying with default
>> > protocol =
>> > 'jrmp'.
>> > 15:12:58.182 [main] DEBUG org.objectweb.jotm - default constructor
>> > 15:12:58.198 [main] INFO org.objectweb.jotm.jta - JOTM 2.0.10
>> > 15:12:58.198 [main] DEBUG org.objectweb.jotm.jta -
>> > TransactionFactory=org.objectweb.jotm.TransactionFactoryImpl at 1bd7848
>> > 15:12:58.198 [main] DEBUG org.objectweb.jotm.jta - Batch constructor
>> > 15:12:58.198 [main] DEBUG org.objectweb.jotm.jta - Clock constructor
>> > 15:12:58.214 [main] DEBUG org.objectweb.jotm.recovery -
>> > TransactionRecoveryImpl constructor
>> > 15:12:58.214 [main] DEBUG org.objectweb.jotm.recovery - JOTM Recovery is
>> > disabled
>> > 15:12:58.245 [main] DEBUG org.objectweb.jotm -
>> > TransactionManager=org.objectweb.jotm.Current at 15093f1
>> > 15:12:58.245 [main] DEBUG org.objectweb.jotm.jta - timeout= 604800
>> > 15:12:58.245 [main] DEBUG org.objectweb.jotm.jta - Resetting transaction
>> > timeout= 604800
>> > had error org.mulgara.store.nodepool.NodePoolException: Couldn't
>> > construct
>> > node pool
>> >
>> >
>> >
>> > _______________________________________________
>> > Mulgara-general mailing list
>> > Mulgara-general at mulgara.org
>> > http://mulgara.org/mailman/listinfo/mulgara-general
>> >
>> >
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