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  1. Hadoop HDFS
  2. HDFS-3399 BookKeeper option support for NN HA
  3. HDFS-3752

BOOTSTRAPSTANDBY for new Standby node will not work just after saveNameSpace at ANN in case of BKJM

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Duplicate
    • 2.0.0-alpha
    • None
    • ha
    • None

    Description

      1. do saveNameSpace in ANN node by entering into safemode
      2. in another new node, install standby NN and do BOOTSTRAPSTANDBY
      3. Now StandBy NN will not able to copy the fsimage_txid from ANN

      This is because, SNN not able to find the next txid (txid+1) in shared storage.
      Just after saveNameSpace shared storage will have the new logsegment with only START_LOG_SEGEMENT edits op.
      and BookKeeper will not be able to read last entry from inprogress ledger.

      Attachments

        1. HDFS-3752-testcase.patch
          6 kB
          Rakesh Radhakrishnan

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-5080 BootstrapStandby not working with QJM when the existing NN is active

          • Major - Major loss of function.
          • Closed
          relates to

          New Feature - A new feature of the product, which has yet to be developed. HDFS-3077 Quorum-based protocol for reading and writing edit logs

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-4120 Add a new "-skipSharedEditsCheck" option for BootstrapStandby

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              rakeshr Rakesh Radhakrishnan
              vinayakumarb Vinayakumar B
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              Dates

                Created:
                Updated:
                Resolved: