Not getting data while using user_dispatch mode in EMA?

Hi @gaurav.mahajan,

The error you are seeing may be a result of outdated dictionary files within the ADS you are connected to. I would first try on the step by step EMA Java tutorials (Step 2) that uses the default operation model: API_DISPATCH and check your results. There shouldn't be a different between the 2 operation models. If you suspect it could be the ADS dictionaries are out of date, you can try to use local dictionaries. For this, you will have to utilize a configuration file which includes a Dictionary Group which allows you to use local dictionary files. Local dictionary files are included within your EMA package within the subdirectory: Ema/etc.

Just to make sure were in sync in terms of what I did, I took the above Step 2 tutorial and modified it to use the USER_DISPATCH operation model. Sections I changed:

consumer = EmaFactory.createOmmConsumer(
	config.host("elektron:14002")
	      .username("user")
              .operationModel(OmmConsumerConfig.OperationModel.USER_DISPATCH)
	);
...
// Instead of a sleep, I did this:
long startTime = System.currentTimeMillis();
while (startTime + 60000 > System.currentTimeMillis())
    consumer.dispatch(10);

After running this, I received the expected results.

Try some of these suggestions and let us know what you find.

thanks.