Package org.apache.hadoop.mapred

Interface RecordWriter<K,V>

@Public @Stable public interface RecordWriter<K,V>
RecordWriter writes the output <key, value> pairs to an output file.

RecordWriter implementations write the job outputs to the FileSystem.

See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    close(Reporter reporter)
    Close this RecordWriter to future operations.
    void
    write(K key, V value)
    Writes a key/value pair.

  • Method Details

    • write

      void write(K key, V value) throws IOException
      Writes a key/value pair.
      Parameters:
      key - the key to write.
      value - the value to write.
      Throws:
      IOException

    • close

      void close(Reporter reporter) throws IOException
      Close this RecordWriter to future operations.
      Parameters:
      reporter - facility to report progress.
      Throws:
      IOException