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<h1 title="Package" class="title">Package&nbsp;org.apache.hadoop.mapred.nativetask</h1>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/nativetask/CommandDispatcher.html" title="interface in org.apache.hadoop.mapred.nativetask">CommandDispatcher</a></td>
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<div class="block">a CommandDispatcher receives <a href="../../../../../org/apache/hadoop/mapred/nativetask/Command.html" title="class in org.apache.hadoop.mapred.nativetask"><code>Command</code></a> from upstream
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<div class="block">a DataReceiver pulls in arriving data, an example
is <a href="../../../../../org/apache/hadoop/mapred/nativetask/handlers/BufferPuller.html" title="class in org.apache.hadoop.mapred.nativetask.handlers"><code>BufferPuller</code></a></div>
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<div class="block">interacts with native side to support Java Combiner</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/nativetask/INativeComparable.html" title="interface in org.apache.hadoop.mapred.nativetask">INativeComparable</a></td>
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<div class="block">Any key type that is comparable at native side must implement this interface.</div>
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<div class="block">A Handler accept input, and give output can be used to transfer command and data</div>
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<div class="block">NativeDataSource loads data from upstream</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/nativetask/Command.html" title="class in org.apache.hadoop.mapred.nativetask">Command</a></td>
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<div class="block">used to create channel, transfer data and command between Java and native</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeMapOutputCollectorDelegator.html" title="class in org.apache.hadoop.mapred.nativetask">NativeMapOutputCollectorDelegator</a>&lt;K,V&gt;</td>
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<div class="block">native map output collector wrapped in Java interface</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html" title="class in org.apache.hadoop.mapred.nativetask">NativeRuntime</a></td>
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<div class="block">This class stands for the native runtime It has three functions:
1.</div>
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<div class="block">Base class for platforms.</div>
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platform methods</div>
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