OutputFormat should be given the reduce id directly rather than a filename
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Key: HADOOP-904
URL: https://issues.apache.org/jira/browse/HADOOP-904
Project: Hadoop
Issue Type: Improvement
Components: mapred
Affects Versions: 0.10.1
Reporter: Owen O'Malley
Assigned To: Owen O'Malley
Fix For: 0.11.0
The OutputFormat API should be changed to be more evolution proof:
public interface OutputFormatContext {
JobConf getJobConf();
Progressable getProgress();
}
public interface OutputFormat {
RecordReader getRecordReader(int reduce, OutputFormatContext context) throws
IOException;
void checkOutputSpecs(OutputFormatContext context) throws IOException;
}
And OutputFormatBase would be renamed:
public abstract class FileOutputFormat implements OutputFormat {
protected Path getOutputPath(int reduce, OutputFormatContext context) throws
IOException { ... }
... current OutputFormatBase methods ...
}
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