HBase
  1. HBase
  2. HBASE-5228

[REST] Rip out "transform" feature

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.90.5, 0.92.0, 0.94.0
    • Fix Version/s: 0.90.6, 0.92.1, 0.94.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The 'transform' feature, where REST can be instructed, via a table attribute, to apply a transformation (e.g. base64 encoding or decoding) to a (sub)set of column values before serving them up to a client or storing them into HBase, was added some time ago at the request of Jack Levin. I have since come to regret it, it was not a well thought out feature:

      • This is really an application concern.
      • It adds significant overhead to request processing: Periodically a HBaseAdmin is used to retrieve the table descriptor, in order to scan through table attributes for transformation directives.

      I think it is best to rip it out, its a real problem area, and REST should be no more concerned about data formats than the Java API.

      I doubt anyone uses this, not even Jack. Will need to follow up with him to confirm.

      1. HBASE-5228-trunk.patch
        23 kB
        Andrew Purtell
      2. HBASE-5228-0.92.patch
        23 kB
        Andrew Purtell

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          People

          • Assignee:
            Andrew Purtell
            Reporter:
            Andrew Purtell
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            Dates

            • Created:
              Updated:
              Resolved:

              Development