Message groups

Messages with the same IBMMQGroupId can be grouped as message groups. You can configure how the WebSphere MQ input connectors should handle message groups before they are sent to the input queue:

•	Each individual message within a message group is treated as one job. This is the default option.

•	Message groups are aggregated into one message the same way as segmented messages are aggregated.

If the WebSphere MQ input connector is configured to aggregate message groups, it must wait for the last message in the group before it can start to process the input. This in order to make sure all messages are aggregated in the correct order. This implies that the throughput of large messages will drop compared to when each message is treated as a separate job.