[wildfly-dev] Transaction synchronization between threads

A jberet user reported JBERET-29 <https://issues.jboss.org/browse/JBERET-29> (Foreign key constraint step_execution_jobexecutionid_fkey fails when using Postgresql on WildFly, and we are trying to fix it by jberet 1.0.0.Final. The problem happens when user app starts a job within a transaction (e.g., CMT EJB), jberet inserts JobExecution into database (thread 1 & transaction 1), and then spawn a jberet-batch thread to run the job (thead 2 & transaction 2). Sometimes T2 tries to access db before T1 is committed, hence the error reported by the user. What's the common approach for solving this kind of problem? I suppose other WildFly components may also have this issue and probably already solved. Using transaction synchronization is a cleaner solution than polling db, but I'm not sure about its full implication. Ideally, I don't want to use system level JTA API like TransactionManager or Synchronization in jberet proper, but probably we can implement it in WildFly jberet integration. Thanks, Cheng