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  1. WiredTiger
  2. WT-6624

Use transaction snapshot for applications performing eviction

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    Details

    • Type: Task
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT10.0.0, 4.4.2, 4.9.0
    • Component/s: None
    • Labels:
      None
    • Story Points:
      8
    • Sprint:
      Storage - Ra 2020-09-07, Storage - Ra 2020-09-21, Storage - Ra 2020-10-05, Storage - Ra 2020-10-19

      Description

      Currently, eviction uses last_running transaction in visibility checks, this could sometimes lead to update restore eviction and might not ease much of cache pressure. Eviction could use snapshots to improve this situation. WT-6490 is to address this issue for internal eviction workers.
      Application threads performing eviction needs snapshot management as they might already have a snapshot.

        Attachments

          Issue Links

          has to be done after

          Improvement - An improvement or enhancement to an existing feature or task. WT-6490 Acquire snapshot for eviction threads

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

          Build Failure - WT-6725 Skip checking visibility for updates restored from disk

          • Major - P3 - Major loss of function.
          • Closed
          is depended on by

          Bug - A problem which impairs or prevents the functions of the product. WT-6664 Cache eviction causes high latency during py-tpcc.

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

            Activity

              People

              Assignee:
              haseeb.bokhari Haseeb Bokhari
              Reporter:
              vamsi.krishna Vamsi Boyapati
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                Dates

                Created:
                Updated:
                Resolved: