Failed to persist object through ClusterJPA

[Lu Boying]

I tried to persist a simple object into Cluser thourgh ClusterJPA using following snippet:
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("mydb");
EntityManager em = entityManagerFactory.createEntityManager();
EntityTransaction userTransaction = em.getTransaction();

userTransaction.begin();

ProjectJPA project = new ProjectJPA();
project.setId(new Long(100));
project.setTenantOrg("tid1");
project.setQuotaGB(1000);
project.setQuotaEnabled(1);
em.persist(project);

userTransaction.commit();

But I got following error:

Caused by: com.mysql.clusterj.ClusterJFatalInternalException: Operation partitionKeySetPart is not supported for non-key fields.
at com.mysql.clusterj.core.metadata.AbstractDomainFieldHandlerImpl$27.partitionKeySetPart(AbstractDomainFieldHandlerImpl.java:2387)
at com.mysql.clusterj.core.metadata.AbstractDomainFieldHandlerImpl.partitionKeySetPart(AbstractDomainFieldHandlerImpl.java:392)
at com.mysql.clusterj.openjpa.NdbOpenJPADomainTypeHandlerImpl.createPartitionKey(NdbOpenJPADomainTypeHandlerImpl.java:578)
at com.mysql.clusterj.core.SessionImpl.setPartitionKey(SessionImpl.java:264)
at com.mysql.clusterj.core.SessionImpl.insert(SessionImpl.java:428)
at com.mysql.clusterj.openjpa.NdbOpenJPAStoreManager.flush(NdbOpenJPAStoreManager.java:375)
at org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:131)

Does anyone know the root cause and how to set the log level I want to get more log info from clusterJ jar file.

I use openjpa 2.3.0 + mysql-connector-5.1.31.

Thanks a lot.