| Package | Description | 
|---|---|
| org.apache.hadoop.mapred.nativetask.handlers | 
| Class and Description | 
|---|
| BufferPusher actively push data into a buffer and signal a  BufferPusheeto collect it | 
| IDataLoader an IDataLoader loads data on demand | 
| NativeCollectorOnlyHandler Java Record Reader + Java Mapper + Native Collector | 
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