Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-9426

Rollingupgrade finalization is not backward compatible

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • None
    • 2.8.0, 2.7.2, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      After HDFS-7645, the namenode can return non-null rollingUpgradeInfo in heatbeat reponses. 2.7.1 or 2.6.x datanodes won't finalize the upgrade because it's not null.

      NN might have to check the DN version and return different rollingUpgradeInfo.

      HDFS-8656 recognized the compatibility issue of the changed semantics, but unfortunately did not address the semantics of the heartbeat response.

      Attachments

        1. HDFS-9426.branch-2.7.poc.patch
          4 kB
          Kihwal Lee
        2. HDFS-9426.trunk.poc.patch
          4 kB
          Kihwal Lee

        Issue Links

          Activity

            People

              kihwal Kihwal Lee
              kihwal Kihwal Lee
              Votes:
              0 Vote for this issue
              Watchers:
              16 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: