Hi @ashwathguru.s, If you are interested in storing level 1 data, it comes in the form of a map of key/value pairs; where the keys are Field Identifiers and the values are the data for that field.

For storage, I think best option might be to serialize the OMM message into a JSON object, since it is the format used by Elasticsearch and Hadoop is able to read it as well. If following this approach, ensure that your callback method is not slowed down by field decoding or file I/O operations.