Hadoop Common
  1. Hadoop Common
  2. HADOOP-4640

Add ability to split text files compressed with lzo

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Trivial 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.

      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

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          People

          • Assignee:
            Johan Oskarsson
            Reporter:
            Johan Oskarsson
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            Dates

            • Created:
              Updated:
              Resolved:

              Development