Clustered Columnstore Index: Massively Parallel Trickle Insert

A traditional scenario of loading data into CCI is a nightly load from one or more data files containing millions of rows. Recommended technique is to load the data with batchsize >= 102400 as explained here https://blogs.msdn.microsoft.com/sqlserverstorageengine/2014/07/27/clustered-column-store-index-bulk-loading-the-data/. However, we are seeing many scenarios where data source is parallel data stream (i.e. trickle insert) to be…

0

SQL Server 2016/2017: Availability group secondary replica redo model and performance

When availability group was initially released with SQL Server 2012, the transaction log redo was handled by a single redo thread for each database in an AG secondary replica. This redo model is also called as serial redo. In SQL Server 2016, the redo model was enhanced with multiple parallel redo worker threads per database…

0