private void runNewMapper(
final JobConf job, MRTaskReporter reporter, final MRInputLegacy in, KeyValueWriter out)
throws IOException, InterruptedException {
// Initialize input in-line since it sets parameters which may be used by the processor.
// Done only for MRInput.
// TODO use new method in MRInput to get required info
// in.initialize(job, master);
// make a task context so we can get the classes
org.apache.hadoop.mapreduce.TaskAttemptContext taskContext = getTaskAttemptContext();
// make a mapper
org.apache.hadoop.mapreduce.Mapper mapper;
try {
mapper =
(org.apache.hadoop.mapreduce.Mapper)
ReflectionUtils.newInstance(taskContext.getMapperClass(), job);
} catch (ClassNotFoundException cnfe) {
throw new IOException(cnfe);
}
org.apache.hadoop.mapreduce.RecordReader input = new NewRecordReader(in);
org.apache.hadoop.mapreduce.RecordWriter output = new NewOutputCollector(out);
org.apache.hadoop.mapreduce.InputSplit split = in.getNewInputSplit();
org.apache.hadoop.mapreduce.MapContext mapContext =
new MapContextImpl(
job, taskAttemptId, input, output, getCommitter(), processorContext, split);
org.apache.hadoop.mapreduce.Mapper.Context mapperContext =
new WrappedMapper().getMapContext(mapContext);
input.initialize(split, mapperContext);
mapper.run(mapperContext);
this.statusUpdate();
input.close();
output.close(mapperContext);
}
