Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-525

Need raw comparators for hadoop record types

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.6.0
    • Fix Version/s: 0.10.0
    • Component/s: record
    • Labels:
      None

      Description

      Raw comparators are not generated for types that are generated with the Hadoop record framework. This could have a substantial performance impact when using hadoop record generated types in Map/Reduce. The record i/o framework should auto-generate raw comparators for types.

      Comparison for hadoop record i/o types is defined to be member wise comparison of objects. A possible implementation could only deserialize one member from each object at a time, compare them and either return or move on to the next member if the values are equal.

        Attachments

        1. WordCountType.java
          18 kB
          Trevor Strohman
        2. TypeBuilder-support.tar
          30 kB
          Trevor Strohman
        3. TypeBuilder.java
          32 kB
          Trevor Strohman
        4. raw-comparators.patch
          58 kB
          Milind Bhandarkar

          Activity

            People

            • Assignee:
              milindb Milind Bhandarkar
              Reporter:
              sameerp Sameer Paranjpye
            • Votes:
              3 Vote for this issue
              Watchers:
              0 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: