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From Ravindranath Akila <>
Subject Re: OpenEJB + HBase + Datanucleus + JPA - Problem when TomEE closing entity manager
Date Sun, 01 Jul 2012 19:00:43 GMT
Gave TomEE 1.0.0 a try, but I get a NPE from Datanucleus with no other
message. I will try debugging further.

Is it mandatory that the jta-data-source and non-jta-data-source be defined
on persistence.xml? If so, it is also compulsory that I specify the same on

I am unable to make an entry on openejb.xml since there is no such HBase
driver available as far as I know(the one availabe is an alpha release).
Datanucleus gives it's own data source implementation.

Basically, I am not sure how the persistence.xml is taken up by a Java EE
server. Is it that the server will read the persistence.xml, find the
provider and hand it over the jta and non-jta data sources? Can the
provider do its own independent hooking up with the database and still be
compatible with container managed transactions?

Sorry if I am overloading you with questions. Just that I am eager to see
HBase running with JPA support on TomEE :-)

As I was busy trying to get a newer openejb version running, I was unable
to write a simple app to reproduce the error. I will send one in soon.
On Jun 30, 2012 11:37 PM, "Romain Manni-Bucau" <>

> I want to look datanucleus code so any simple unit test is enough. I can
> install hbase ;)
> Le 30 juin 2012 15:33, "Ravindranath Akila" <>
> a
> écrit :
> > Hi Romain,
> >  I will give a newer version a try. Hope I don't run into multiple
> > independent issues :-)
> >  To provide the project for you to investigate is not hard but I have to
> > see to that you can get it up and running easily. Having HBase in the
> scene
> > makes complicated.
> >  Would it be better if I provide a pom.xml with the entity enhancer
> plugin
> > so that you can run any project with it to see how Datanucleus and HBase
> > does against it?
> >  Basically our code has no TomEE specific stuff and is standard JEE so I
> > can inline any outcome you get.
> >
> > Thanks a lot Romain :-)
> >

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