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QDS_LOADDB

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Description:

Anecdotal evidence is that this wait type occurs during crash recovery, as queries cannot run on the database being recovered until the Query Store has initialized and loaded it’s data from the recovered database.

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Added in SQL Server version:

2014

Removed in SQL Server version:

N/A

Extended Events wait_type value:

The map_key value in sys.dm_xe_map_values is 988 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.

Other information:

N/A

Known occurrences in SQL Server (list number matches call stack list):

  1. TBD

Abbreviated call stacks (list number matches known occurrences list):

  1. TBD