Using Map/Reduce streaming

Programs using Netezza Analytics map/reduce Streaming are launched on individual SPUs. Usercreated scripts or programs must be able to be executed on the SPU.

Each program used as a mapper, reducer, or combiner job receives subsequent lines containing a key and value separated by a tabulator. Keys and values are taken from the specified database and table. Only text data is supported. The program performs computations and outputs new tab-separated key-value pairs that are then inserted into the output table. Both key and value columns have VARCHAR type with a user-specified size.