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  1. WiredTiger
  2. WT-3435

Lookaside eviction should be able to save unstable updates

          Details

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

              Attachments

                Issue Links

                depends on

                Bug - A problem which impairs or prevents the functions of the product. WT-3617 lookaside with timestamps: heap-use-after-free

                • Major - P3 - Major loss of function.
                • Resolved
                is duplicated by

                Improvement - An improvement or enhancement to an existing feature or task. WT-3554 Extend timestamp test to trigger eviction

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

                Bug - A problem which impairs or prevents the functions of the product. WT-3406 Reconciliation is choosing reserved records for writing.

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

                Bug - A problem which impairs or prevents the functions of the product. WT-3521 Unstable updates should not be written by lookaside eviction

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

                Web Link pull request

                  Activity

                    People

                    • Assignee:
                      michael.cahill Michael Cahill
                      Reporter:
                      michael.cahill Michael Cahill
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                      Dates

                      • Created:
                        Updated:
                        Resolved: