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This wait type is when a thread is waiting for Service Broker to shut down, either from an instance shutdown or manually disabling Service Broker.
(Books Online description: “Occurs when there is a planned shutdown of Service Broker. This should occur very briefly, if at all.”)
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Added in SQL Server version:
Removed in SQL Server version:
Extended Events wait_type value:
The map_key value in sys.dm_xe_map_values is 171 in 2008 and 2008 R2 and 175 in 2012 and 2014 RTM. After 2014 RTM, you must check the DMV to get the latest value as some map_key values have changed in later builds.
I have not seen this wait type be a noticeable contention point.
Known occurrences in SQL Server (list number matches call stack list):
- Waiting for Service Broker to shut down during instance shutdown
- Waiting for Service Broker to shut down manually
And several other similar call stacks
Abbreviated call stacks (list number matches known occurrences list):