Service pack informationTo resolve this issue, obtain Service Pack 1 for SQL Server 2014 and make sure SQL Server account has SE_MANAGE_VOLUME_NAME privilege.
bugs that are fixed in SQL Server 2014 Service Pack 1 .
CauseSQL Server 2014 has a new feature of buffer pool extension that extends the buffer pool from physical memory to SSDs. You can create buffer pool extension files on any SSD to increase buffer pool capacity and improve the performance.
When such a buffer pool extension file is created, the space in that file is not marked as used. Therefore, when an asynchronous write happens to this file at an offset that is beyond the existing logical end of file, Windows takes time to complete the asynchronous write operation because it fills the file with zero from the existing logical end to the new logical end. This causes non-yielding tasks which may result in hung query.
Article ID: 3044953 - Last Review: May 15, 2015 - Revision: 1