4.7.5. Override the Default Group Name

When a queue has message groups enabled, messages are grouped based on a match with a header field. Messages that have no match in their headers for a group are assigned to the default group. The default group is preconfigured as qpid.no-group. You can change this default group name by supplying a value for the default-message-group configuration parameter to the broker at start-up. For example, using the command line:

qpidd --default-message-group "EMPTY-GROUP"