HadoopProv: Towards Provenance as a First Class Citizen in MapReduce

We introduce HadoopProv, a modified version of Hadoop that implements provenance capture and analysis in MapReduce jobs. It is designed to minimise provenance capture overheads by (i) treating provenance tracking in Map and Reduce phases separately, and (ii) deferring construction of the provenance graph to the query stage. Provenance graphs are later joined on matching intermediate keys of the Map and Reduce provenance files. In our prototype implementation, HadoopProv has an overhead below 10% on typical job runtime (<7% and <30% average temporal increase on Map and Reduce tasks respectively). Additionally, we demonstrate that provenance queries are serviceable in O ( k log n ) , where n is the number of records per Map task and k is the set of Map tasks in which the key appears.