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  1. WiredTiger
  2. WT-3435

Lookaside eviction should be able to save unstable updates

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.6.0-rc0, WT3.0.0
    • Component/s: None
    • Labels:

      Description

      During lookaside eviction, updates that are committed but not yet stable are included in pages written to data files. If a subsequent checkpoint includes such a page, then updates could become durable before they are stable.

      A test case for this would run with logging disabled, fix an oldest timestamp, then insert enough data to trigger lookaside eviction. Then take a checkpoint as of the pinned oldest timestamp. If the checkpoint contains any of the inserts then lookaside eviction has made changes durable too soon.

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