KB3048752 - FIX: A SELECT query that's run as a parallel batch-mode scan triggers a deadlock in SQL Server 2014

Applies to: SQL Server 2014 Business IntelligenceSQL Server 2014 DeveloperSQL Server 2014 Enterprise

Symptoms


In Microsoft SQL Server 2014, you run a SELECT query that generates a parallel batch-mode scan (typically scanning a columnstore index). In some cases, the batch-mode scan may be involved in a deadlock situation. In this case, the deadlock is not resolved automatically.

Cause


This problem occurs when a new deadlock cannot be detected and therefore triggers a blocking scenario.

Resolution


Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References


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