Uploaded image for project: 'Hadoop YARN'
  1. Hadoop YARN
  2. YARN-6264

AM not launched when a single vcore is available on the cluster

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.9.0, 3.0.0-alpha4
    • fairscheduler
    • None
    • Reviewed

    Description

      In method canRunAppAM(), we will get a zero vcore if there is only one vcores, and the maxAMShare is between 0 and 1 because Resources#multiply round down double to a integer by default. This potentially happens frequently when assigning a container to AM just after preemption happens since it is more likely there is only one vcore on the cluster just after preemption.

      Attachments

        1. YARN-6264.001.patch
          5 kB
          Yufei Gu
        2. YARN-6264.002.patch
          4 kB
          Yufei Gu
        3. YARN-6264.003.patch
          3 kB
          Yufei Gu
        4. YARN-6264.004.patch
          4 kB
          Yufei Gu
        5. YARN-6264.005.patch
          4 kB
          Yufei Gu
        6. YARN-6264.006.patch
          8 kB
          Yufei Gu

        Activity

          People

            yufeigu Yufei Gu
            yufeigu Yufei Gu
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: