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  1. Hadoop Map/Reduce
  2. MAPREDUCE-5950

incorrect description in distcp2 document

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.2.1, 2.4.0
    • Fix Version/s: 2.6.0
    • Component/s: documentation
    • Labels:
    • Target Version/s:

      Description

      In http://hadoop.apache.org/docs/r1.2.1/distcp2.html#UpdateAndOverwrite

      The first statement of the "Update and Overwrite" section says:

      -update is used to copy files from source that don't exist at the target, or have different contents. -overwrite overwrites target-files even if they exist at the source, or have the same contents.

      The "Command Line Options" table says :

      -overwrite: Overwrite destination
      -update: Overwrite if src size different from dst size

      Based on the implementation, making the following modification would be more accurate:

      The first statement of the "Update and Overwrite" section:

      -update is used to copy files from source that don't exist at the target, or have different contents. -overwrite overwrites target-files if they exist at the target.
      

      The "Command Line Options" table:

        -overwrite: Overwrite destination
        -update: Overwrite destination if source and destination have different contents
      

      Thanks.

        Attachments

        1. HDFS-6502.patch
          3 kB
          Akira Ajisaka
        2. HDFS-6502.2.patch
          3 kB
          Akira Ajisaka
        3. HDFS-6502.3.patch
          3 kB
          Akira Ajisaka
        4. HDFS-6502.4.patch
          3 kB
          Akira Ajisaka

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            People

            • Assignee:
              aajisaka Akira Ajisaka
              Reporter:
              yzhangal Yongjun Zhang
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              • Created:
                Updated:
                Resolved: