Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-3961

resource estimation works badly in some cases

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.19.0
    • Fix Version/s: 0.19.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The disk space estimation introduced in HADOOP-657 performs badly under some circumstances. In particular, if maps have very small output, the initial estimate of output size equals input size throws everything off.

      Fix is to use a smaller initial estimate, and to update it appropriately.

        Attachments

        1. resourceEstFix.patch
          7 kB
          Ariel Shemaiah Rabkin

          Activity

            People

            • Assignee:
              asrabkin Ariel Shemaiah Rabkin
              Reporter:
              asrabkin Ariel Shemaiah Rabkin
            • Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: