Returns a row for each pending I/O request in SQL Server.
To call this from Azure SQL Data Warehouse or Parallel Data Warehouse, use the name sys.dm_pdw_nodes_io_pending_io_requests.
|Column name||Data type||Description|
|io_completion_request_address||varbinary(8)||Memory address of the IO request. Is not nullable.|
|io_type||varchar(7)||Type of pending I/O request. Is not nullable.|
|io_pending||int||Indicates whether the I/O request is pending or has been completed by Windows. An I/O request can still be pending even when Windows has completed the request, but SQL Server has not yet performed a context switch in which it would process the I/O request and remove it from this list. Is not nullable.|
|io_completion_routine_address||varbinary(8)||Internal function to call when the I/O request is completed. Is nullable.|
|io_user_data_address||varbinary(8)||Internal use only. Is nullable.|
|scheduler_address||varbinary(8)||Scheduler on which this I/O request was issued. The I/O request will appear on the pending I/O list of the scheduler. For more information, see sys.dm_os_schedulers (Transact-SQL). Is not nullable.|
|io_handle||varbinary(8)||File handle of the file that is used in the I/O request. Is nullable.|
|io_offset||bigint||Offset of the I/O request. Is not nullable.|
|io_pending_ms_ticks||int||Internal use only. Is not nullable.|
|pdw_node_id||int||Applies to: Azure SQL Data Warehouse, Parallel Data Warehouse
The identifier for the node that this distribution is on.
On SQL Server, requires
VIEW SERVER STATE permission.
On SQL Database, requires the
VIEW DATABASE STATE permission in the database.