(Republishing, or using this info in a commercial product/website, is prohibited without permission. All other uses are permitted. If in doubt, please ask.)

WAIT_XTP_TASK_SHUTDOWN

(Back to main page…)

Description:

Exactly as stated below.

(Books Online description: “Occurs when waiting for an In-Memory OLTP thread to complete.”)

Questions/comments on this wait type? Click here to send Paul an email, especially if you have any information to add to this topic.

Added in SQL Server version:

2012

Removed in SQL Server version:

N/A

Extended Events wait_type value:

Maps to the XTP_TASK_SHUTDOWN map_value in sys.dm_xe_map_values (thanks to Jonathan’s post here).

The map_key value in sys.dm_xe_map_values is 860 in 2012 and 879 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:

I have not seen this wait to be a noticeable contention point.

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

  1. Waiting for an In-Memory OLTP thread to complete (in this case, while dropping a database)

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

  1. SOS_Task::PostWait+9e
    EventInternal<SuspendQueueSLock>::Wait+2ca
    SOS_Task::WaitForDone+a0
    HkCheckpointCtxtImpl::Shutdown+11f
    HkHostDbCtxt::StorageShutdown+61
    DBTABLE::Shutdown+69
    DBMgr::ShutdownDB+208
    NotifyEndDropDatabase::HandleEvent+121
    XactRM::FireNotificationsInternal+cf
    XactRM::SinglePhaseCommit+4e1
    XactRM::CommitInternal+472
    FullXactImp::Commit+326
    CMsqlXactInternalReadWrite::Commit+19
    CMsqlXactImp::Commit+1d6
    CAutoMsqlXact::CommitNestedXact+bf
    CStmtDropDB::XretExecute+d97
    CMsqlExecContext::ExecuteStmts<0,1>+8bd
    CMsqlExecContext::FExecute+a58
    CSQLSource::Execute+86c