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  1. Hadoop Common
  2. HADOOP-7096

Allow setting of end-of-record delimiter for TextInputFormat

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.2.0, 0.23.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The patch for https://issues.apache.org/jira/browse/MAPREDUCE-2254 required minor changes to the LineReader class to allow extensions (see attached 2.patch). Description copied below:

      It will be useful to allow setting the end-of-record delimiter for TextInputFormat. The current implementation hardcodes '\n', '\r' or '\r\n' as the only possible record delimiters. This is a problem if users have embedded newlines in their data fields (which is pretty common). This is also a problem for other tools using this TextInputFormat (See for example: https://issues.apache.org/jira/browse/PIG-836 and https://issues.cloudera.org/browse/SQOOP-136).
      I have wrote a patch to address this issue. This patch allows users to specify any custom end-of-record delimiter using a new added configuration property. For backward compatibility, if this new configuration property is absent, then the same exact previous delimiters are used (i.e., '\n', '\r' or '\r\n').

        Attachments

        1. HADOOP-7096_r2.patch
          9 kB
          Ahmed Radwan
        2. HADOOP-7096_r3.patch
          12 kB
          Ahmed Radwan
        3. hadoop-7096_r4.patch
          6 kB
          Todd Lipcon
        4. hadoop-7096.branch-1.patch
          7 kB
          Suresh Srinivas
        5. HADOOP-7096.patch
          0.8 kB
          Ahmed Radwan

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              • Assignee:
                ahmed.radwan Ahmed Radwan
                Reporter:
                ahmed.radwan Ahmed Radwan
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                • Created:
                  Updated:
                  Resolved: