Method setup

src/com/winvector/logistic/mr/MapRedFn.java:148–164

(final Context context)

		private VEval accum = null;
		
		@Override
		public void setup(final Context context) throws IOException {
			// read side-channel configuration
			log = LogFactory.getLog(SumMapper.class);
			hostDescr = WritableUtils.hostDescr();			
			log.info(".setup() " + hostDescr); 
			try {
				burster = SerialUtils.readSerialiazlabeFromString(context.getConfiguration().get(MapRedScan.BURSTERSERFIELD));
			} catch (ClassNotFoundException e) {
				throw new IOException(e.toString());
			}
			config = JobStateDescr.fromString(context.getConfiguration().get(MRFIELDNAME));
			defs = new VariableEncodings(config.defs,config.useIntercept,config.weightKey);
			accum = new VEval(config.x,config.wantGrad,config.wantHessian);
			pscratch = new double[defs.noutcomes()];
			nProcessed = 0;
		}

		@Override
		public void map(final LongWritable key, final Text value, final Context context) {