HDFS Forum

HDFS getimage gone in HDP2.1?

  • #53506

    After upgrading a cluster to HDP 2.1 (from 2.0.9), my namenode backup script has stopped working because
    is now returning 404s (started immediately after the upgrade).

    Did the API or method for backing up namenodes change in the latest HDFS version? I am using NN HA with QJM.

    Are there any Horton docs that covers the best practices for backing up HDFS? (all I can find a doc on backing it up prior to a system upgrade, which puts it into safe mode — not what I’m looking for).

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  • Author
  • #53614
    Robert Molina

    Hi Steve,
    Can you try the following:


    Robert Molina

    Hi Steve,
    I just tested on latest HDP 2.1 and able to reproduce, checking to see if anything has changed with that api call.



    I did some more digging and the API did change, it’s now:

    The “official” way of doing this is via:
    hdfs dfsadmin -fetchImage <local directory>
    which just seems to do the call to the /imagetransfer URL above.

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