HBase
  1. HBase
  2. HBASE-2406

Define semantics of cell timestamps/versions

    Details

    • Type: Task Task
    • Status: Resolved
    • Priority: Critical Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.90.0
    • Component/s: documentation
    • Labels:
      None

      Description

      There is a lot of general confusion over the semantics of the cell timestamp. In particular, a couple questions that often come up:

      • If multiple writes to a cell have the same timestamp, are all versions maintained or just the last?
      • Is it OK to write cells in a non-increasing timestamp order?

      Let's discuss, figure out what semantics make sense, and then move towards (a) documentation, (b) unit tests that prove we have those semantics.

      1. 2406.txt
        22 kB
        stack
      2. versions.html
        12 kB
        stack

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            • Assignee:
              Pranav Khaitan
              Reporter:
              Todd Lipcon
            • Votes:
              1 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development