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  1. Hadoop Common
  2. HADOOP-1823

want InputFormat for bzip2 files

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Details

    • New Feature
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 0.19.0
    • None
    • None

    Description

      Unlike gzip, the bzip file format supports splitting. Compression is by blocks (900k by default) and blocks are separated by a synchronization marker (a 48-bit approximation of Pi). This would permit very large compressed files to be split into multiple map tasks, which is not currently possible unless using a Hadoop-specific file format.

      Attachments

        1. bzip2.jar
          27 kB
          Utkarsh Srivastava

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-3646 Providing bzip2 as codec

          • Major - Major loss of function.
          • Closed

          Activity

            People

              Unassigned Unassigned
              cutting Doug Cutting
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              Dates

                Created:
                Updated:
                Resolved: