Join Query Processing in Data Quality Management

Data quality management is the essential problem for information systems. As a basic operation of Data quality management, joins on large-scale data play an important role in document clustering. MapReduce is a programming model which is usually applied to process large-scale data. Many tasks can be implemented under the framework, such as data processing of search engines and machine learning. However, there is no efficient support for join operation in current implementations of MapReduce. In this paper, we present a strategies to build the extend bloom filter for the large dataset using MapReduce. We use the extend bloom filter to improve the performance of two-way and multi-way joins.