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  1. Hadoop Common
  2. HADOOP-4640

Add ability to split text files compressed with lzo

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.20.0
    • Component/s: io
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Right now any file compressed with lzop will be processed by one mapper. This is a shame since the lzo algorithm would be very suitable for large log files and similar common hadoop data sets. The compression rate is not the best out there but the decompression speed is amazing. Since lzo writes compressed data in blocks it would be possible to make an input format that can split the files.

        Attachments

        1. HADOOP-4640.patch
          21 kB
          Johan Oskarsson
        2. HADOOP-4640.patch
          20 kB
          Johan Oskarsson
        3. HADOOP-4640.patch
          19 kB
          Johan Oskarsson
        4. HADOOP-4640.patch
          17 kB
          Johan Oskarsson

          Activity

            People

            • Assignee:
              johanoskarsson Johan Oskarsson
              Reporter:
              johanoskarsson Johan Oskarsson
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              Dates

              • Created:
                Updated:
                Resolved: