The document discusses a sensor network project called InfraWatch that monitors a bridge in Holland. Over 145 sensors installed on the bridge collect stress, vibration, temperature and other data at 100Hz, generating over 5GB of data per day. The goals of the project are to model bridge behavior, identify effects of traffic, weather and decay on the bridge's structure over time, and determine an optimal sensor configuration for new bridges. The large volume of terabyte-scale sensor data will be analyzed using Hadoop and MapReduce since it is I/O bound. However, new building blocks are needed for Hadoop to perform signal processing tasks on the data like convolution, Fourier transforms and segmentation.