Context(TaskAttemptID reduceId,
JobConf jobConf,
org.apache.hadoop.fs.FileSystem localFS,
TaskUmbilicalProtocol umbilical,
org.apache.hadoop.fs.LocalDirAllocator localDirAllocator,
Reporter reporter,
org.apache.hadoop.io.compress.CompressionCodec codec,
Class<? extends Reducer> combinerClass,
Task.CombineOutputCollector<K,V> combineCollector,
Counters.Counter spilledRecordsCounter,
Counters.Counter reduceCombineInputCounter,
Counters.Counter shuffledMapsCounter,
Counters.Counter reduceShuffleBytes,
Counters.Counter failedShuffleCounter,
Counters.Counter mergedMapOutputsCounter,
TaskStatus status,
org.apache.hadoop.util.Progress copyPhase,
org.apache.hadoop.util.Progress mergePhase,
Task reduceTask,
MapOutputFile mapOutputFile,
Map<TaskAttemptID,MapOutputFile> localMapFiles) |