SQLServerBang

My name is Liwei. I joined Microsoft. Currently I am a SQL Server Support Escalation Engineer in Microsoft CSS in 2011 I’m going to share my knowledge and experience here. I’m still a newbie to this blog system, please bear with me if i post something with ugly font/size. Disclaimer The views expressed on this website/blog are mine alone and do not reflect the views of my company. All postings on this blog are provided “AS IS” with no warranties, and confers no rights. The owner of  https://sqlserverbang.blogspot.com/  will not be liable for any errors or omissions in this information nor for the availability of this information. The owner will not be liable for any losses, injuries, or damages from the display or use of this information.

Since SQL Server 2017, you can install Polybase in SQL Server Failover cluster instance. SQL Server Polybase Dms and SQL Server Polybase Engine are created in Failover cluster, mapping to SQL Server Polybase Data Movement and SQL Server Engine respectively.     And following two registers keys are created in all the nodes. Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SQLPBENGINE$InstanceName Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SQLPBDMS$SQL19     Here are some cases that cause SQL Server Polybase engine fail to start. 1.TCP/IP Protocol is disabled. 2.Polybase engine service fail to connect SQL Server instance. 3.Polybase engine service account does not have permission to access database [DWConfiguration],[DWDiagnostics] and [DWQueue] 4.T he   SQL Server Polybase engine Roles does not exist in Failover cluster. 1)In this case, you need to manually add the role back to failover cluster...