Package org.apache.hadoop.mapred

Interface InputSplit

All Superinterfaces:
Writable
All Known Subinterfaces:
InputSplitWithLocationInfo
All Known Implementing Classes:
CombineFileSplit, CompositeInputSplit, FileSplit, MultiFileSplit
@Public @Stable public interface InputSplit extends Writable
InputSplit represents the data to be processed by an individual Mapper.

Typically, it presents a byte-oriented view on the input and is the responsibility of RecordReader of the job to process this and present a record-oriented view.

See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    getLength()
    Get the total number of bytes in the data of the InputSplit.
    String[]
    getLocations()
    Get the list of hostnames where the input split is located.

    Methods inherited from interface org.apache.hadoop.io.Writable

    readFields, write

  • Method Details

    • getLength

      long getLength() throws IOException
      Get the total number of bytes in the data of the InputSplit.
      Returns:
      the number of bytes in the input split.
      Throws:
      IOException

    • getLocations

      String[] getLocations() throws IOException
      Get the list of hostnames where the input split is located.
      Returns:
      list of hostnames where data of the InputSplit is located as an array of Strings.
      Throws:
      IOException