Uploaded image for project: 'Apache Tez'
  1. Apache Tez
  2. TEZ-376

Reduce Processor can parallelize I/O/Processor initialization

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.2.0
    • Component/s: None
    • Labels:

      Description

      Reported by Gopal Vijayaraghavan. Reduce initialization can take a fair amount of time after shuffle is complete - depending on how expensive the Reduce initialization is.

      Quote from Gopal's investigation
      1.6 seconds is spent in ReflectionUtils.newInstance() -> ReflectionUtils.setConf() of which 1.2 seconds is Utilities.getMapRedWork().

        Attachments

        1. TEZ-376.txt
          7 kB
          Siddharth Seth
        2. TEZ-376.2.txt
          18 kB
          Siddharth Seth

          Activity

            People

            • Assignee:
              sseth Siddharth Seth
              Reporter:
              sseth Siddharth Seth
            • Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: