這篇文章給大家分享的是有關Hadoop2.6.0中InputFormat和OutputFormat的用法示例的內容。小編覺得挺實用的，因此分享給大家做個參考，一起跟隨小編過來看看吧。

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java.lang.Object
    org.apache.hadoop.mapreduce.InputFormat
        org.apache.hadoop.mapreduce.lib.db.DBInputFormat
            DataDrivenDBInputFormat
                OracleDataDrivenDBInputFormat
        org.apache.hadoop.mapreduce.lib.input.FileInputFormat
            CombineFileInputFormat
                CombineSequenceFileInputFormat
                CombineTextInputFormat
            FixedLengthInputFormat
            KeyValueTextInputFormat
            NLineInputFormat
            SequenceFileInputFormat
            TextInputFormat

InputFormat

public abstract class InputFormat {
  public abstract List getSplits(JobContext context) throws IOException, InterruptedException;
                               
  public abstract RecordReader createRecordReader(InputSplit split,TaskAttemptContext context)
                                                        throws IOException,  InterruptedException;
}

1、FileInputFormat

1.1 TextInputFormat

1.2 KeyValueTextInputFormat

1.3 SequenceFileInputFormat

1.4 CombineFileInputFormat

1.5 FixedLengthInputFormat

1.6 NLineInputFormat

2、DBInputFormat

2.1 DataDrivenDBInputFormat

2.1.1 OracleDataDrivenDBInputFormat

OutputFormat

public abstract class OutputFormat {
    public abstract RecordWriter getRecordWriter(TaskAttemptContext context
                    ) throws IOException, InterruptedException;
                    
    public abstract RecordWriter getRecordWriter(TaskAttemptContext context
                    ) throws IOException, InterruptedException;
                    
    public abstract OutputCommitter getOutputCommitter(TaskAttemptContext context
                    ) throws IOException, InterruptedException;
}

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