部署时将Activiti从5.22.0迁移到6.0.0会导致IllegalThreadStateException

Question

我们目前正在使用activiti v5.22.0，其流程引擎的编程配置如下：

public class ProgrammaticProcessEngineConfiguration implements ProcessEngineLookup {

private static final Logger LOGGER = LoggerFactory.getLogger(ProgrammaticProcessEngineConfiguration.class.getCanonicalName());

private ProcessEngine processEngine;

private ManagedThreadFactory managedThreadFactory;

@Override
public ProcessEngine getProcessEngine() {
    managedThreadFactory = getThreadFactory();
    final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
    final ManagedAsyncJobExecutor managedJobExecutor = new ManagedAsyncJobExecutor() {

        @Override
        protected void startExecutingAsyncJobs() {
            if (threadFactory == null) {
                super.startExecutingAsyncJobs();
            } else {
                if (threadPoolQueue == null) { threadPoolQueue = new ArrayBlockingQueue<>(queueSize); }
                if (executorService == null) {
                    ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(corePoolSize, maxPoolSize, keepAliveTime, TimeUnit.MILLISECONDS, threadPoolQueue, threadFactory) {
                        @Override
                        protected void beforeExecute(Thread t, Runnable r) { t.setContextClassLoader(classLoader); }
                    };
                    threadPoolExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
                    executorService = threadPoolExecutor;
                }
                startJobAcquisitionThread();
            }
        }
    };

    managedJobExecutor.setThreadFactory(managedThreadFactory);

    final CdiJtaProcessEngineConfiguration cdiJtaProcessEngineConfiguration = new CdiJtaProcessEngineConfiguration();
    cdiJtaProcessEngineConfiguration.setTransactionManager(getTransactionManager());
    processEngine = cdiJtaProcessEngineConfiguration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)
            .setDataSourceJndiName("something").setDatabaseType("something")
            .setHistoryLevel(HistoryLevel.NONE)
            .setTransactionsExternallyManaged(true).setJobExecutorActivate(true)
            .setAsyncExecutorEnabled(true)
            .setAsyncExecutorActivate(true)
            .setAsyncExecutor(managedJobExecutor)
            .setClassLoader(Thread.currentThread().getContextClassLoader())
            .buildProcessEngine();
    return processEngine;
}

当迁移到v6.0.0时，我们希望维护流程实例的向后兼容行为，因此请设置以下内容：

cdiJtaProcessEngineConfiguration.setActiviti5CompatibilityEnabled(true);

我们需要流程引擎同时支持JTA和CDI。但是，迁移页面（https://www.activiti.org/migration）上的说明不是很清楚，我不确定如何配置流程引擎。

激活兼容模式时，出现以下错误：Unsupported process engine configuration。

是否有人熟悉使用CdiJtaProcessEngineConfiguration将Activiti迁移到v6.0.0？

谢谢