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This wait type is when a thread is switching to preemptive mode while destroying an Extended Event session target.
(Books Online description: N/A)
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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 543 in 2008 and 2008 R2, 591 in 2012, and 607 in 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.
Known occurrences in SQL Server (list number matches call stack list):
- Destroying a session target (in this case, as part of committing the changes from an ALTER EVENT SESSION operation)
And other similar call stacks.
Abbreviated call stacks (list number matches known occurrences list):
XE_ActualTargetEntry::`scalar deleting destructor’+14
XdesRMFull::`vector deleting destructor’+14