Details
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Bug
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Status: Resolved
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Minor
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Resolution: Not A Problem
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None
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None
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Description
The org.apache.hadoop.mapreduce
Class Mapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
has an example with
public void map(Object key, Text value, Context context)
But, "Any type which is to be used as a key in the Hadoop Map-Reduce framework should implement this interface."
org.apache.hadoop.io
Interface WritableComparable<T>
The example has Object for key type. Object doesn't implement WritableComparable.