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java.lang.Object org.apache.hadoop.streaming.io.OutputReader<K,V>
public abstract class OutputReader<K,V>
Abstract base for classes that read the client's output.
Constructor Summary | |
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OutputReader()
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Method Summary | |
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abstract K |
getCurrentKey()
Returns the current key. |
abstract V |
getCurrentValue()
Returns the current value. |
abstract String |
getLastOutput()
Returns the last output from the client as a String. |
void |
initialize(PipeMapRed pipeMapRed)
Initializes the OutputReader. |
abstract boolean |
readKeyValue()
Read the next key/value pair outputted by the client. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public OutputReader()
Method Detail |
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public void initialize(PipeMapRed pipeMapRed) throws IOException
IOException
public abstract boolean readKeyValue() throws IOException
IOException
public abstract K getCurrentKey() throws IOException
IOException
public abstract V getCurrentValue() throws IOException
IOException
public abstract String getLastOutput()
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