@Override
public Value<ResultAndCounters<List<AppEngineFile>>> run() {
@SuppressWarnings("unchecked")
PromisedValue<ResultAndCounters<List<AppEngineFile>>> result =
(PromisedValue) newPromise(ResultAndCounters.class);
String shardedJobId = mrJobId + "-map";
List<? extends InputReader<I>> readers = Util.createReaders(mrSpec.getInput());
Output<KeyValue<K, V>, List<AppEngineFile>> output =
new IntermediateOutput<K, V>(
mrJobId,
readers.size(),
mrSpec.getIntermediateKeyMarshaller(),
mrSpec.getIntermediateValueMarshaller());
startShardedJob(
mrSpec.getJobName() + " (map phase)",
shardedJobId,
new CountersImpl(),
readers,
output,
Util.createWriters(output),
new TaskCreator<I, KeyValue<K, V>, MapperContext<K, V>>() {
@Override
public WorkerShardTask<I, KeyValue<K, V>, MapperContext<K, V>> createTask(
int shard,
int shardCount,
InputReader<I> reader,
OutputWriter<KeyValue<K, V>> writer) {
return new MapShardTask<I, K, V>(
mrJobId,
shard,
shardCount,
reader,
mrSpec.getMapper(),
writer,
settings.getMillisPerSlice());
}
},
result.getHandle(),
settings);
setStatusConsoleUrl(settings.getBaseUrl() + "detail?mapreduce_id=" + shardedJobId);
return result;
}
