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  1. WiredTiger
  2. WT-3773

Reconciling a page with modify records and lookaside can choose wrong values

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Details

    • Bug
    • Status: Closed
    • Blocker - P1
    • Resolution: Fixed
    • None
    • 3.6.0-rc7, WT3.0.0, 3.7.1
    • None
    • None
    • Storage 2017-12-04

    Description

      There is a case when reconciliation is generating an on-disk page with associated lookaside entries, from an in-memory page that has a set of modify updates where the wrong visibility check is applied, which can lead to the wrong version of data being saved.

      We need to fix the visibility check.

      Attachments

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. WT-3745 Don't stall reads due to write pressure

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. WT-5526 Remove visibility check in __wt_value_return_upd

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. WT-3778 Enhance test timestamp abort to support modify operations

          • Major - P3 - Major loss of function.
          • Backlog

          Improvement - An improvement or enhancement to an existing feature or task. WT-3774 Enhance Python lookaside testing to cover cursor modify

          • Major - P3 - Major loss of function.
          • Closed
          links to

          Web Link pull request

          Activity

            People

              michael.cahill@mongodb.com Michael Cahill
              alexander.gorrod@mongodb.com Alexander Gorrod
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              Dates

                Created:
                Updated:
                Resolved: