Zhenhua Wang, Research Engineer at Huawei Technologies

Zhenhua Wang

Research Engineer, Huawei Technologies

Zhenhua Wang is a Research Engineer at Huawei Technologies where he works on building a big data analytics platform based on Apache Spark. Prior to joining Huawei, he received a PhD degree in Computer Science from Zhejiang University. His research interests include information retrieval and web data mining.


Cost-Based Optimizer Framework for Spark SQL

In Spark SQL’s Catalyst optimizer, many rule based optimization techniques have been implemented, but the optimizer itself can still be improved. For example, without detailed column statistics information on data distribution, it is difficult to… Read more