Tag: Parallel Processing

There will be time-consuming hard disk scanning and reading when the volume of data to be processed is large. Columnar storage, used when there are a lot of columns but only a few will be retrieved for the computation, can reduce hard disk accesses and enhance performance. That’s why many data warehouse products use columnar storage. Yet there is the issue of non-synchronized segmentation with columnar data when we are trying to handle it with multithreaded processing. Dividing a table into almost even segments is a prerequisite for parallel processing. It is simple to segment a table using row-oriented storage. We