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  1. WiredTiger
  2. WT-149

session.truncate

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    Details

    • Type: Task
    • Status: Closed
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT1.0
    • Component/s: None
    • Labels:

      Description

      Michael, I wanted to start an issue to track session.truncate.

      I went ahead and tried to fix up the documentation, it now reads that the
      URI and the stop/start cursors are mutually exclusive (so, you're either
      truncating a table or you're discarding between two points in the table),
      and I noted that in the latter case the start/stop points are inclusive.

      I also went ahead and implemented the easy parts:

      I think session.truncate on a URI works: I used the schema_drop code as a
      template and simply truncated the files and discarded their root addresses
      from the schema file).

      For start-to-mid-point and mid-point-to-start cursor truncation, I used the
      obvious loop. We could optimize this if we wanted to by reaching down
      into the files and doing something faster, but I figured for 1.0 we didn't
      need to get that creative.

      I don't know how to do the missing part, which is compare two table-level
      cursors, which is why I've assigned this Issue to you.

      The code I did needs review, just to make sure I didn't get some schema
      modification code wrong.

      Thanks,
      --keith

      =========================
      Keith Bostic
      keith.bostic@wiredtiger.com

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            Assignee:
            michael.cahill Michael Cahill
            Reporter:
            wiredtiger WiredTiger
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              Updated:
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