INDEX-BASED JOIN IN MAPREDUCE USING HADOOP MAPFILES

Map Reduce stays an important method that deals with semi-structured or unstructured big data files, however, querying data mostly needs a Join procedure to accumulate the desired result from multiple huge files. Indexing in other hand, remains the best way to ease the access to a specific record(s) in a timely manner. In this paper the authors are investigating the performance gain by implementing Map File indexing and Join algorithms together.