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  1. WiredTiger
  2. WT-6547

Investigate repurposing of oldest_start_ts as newest_start_ts and oldest_start_txn as newest_start_txn in aggregated timewindow.

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Duplicate
    • None
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    • 0
    • Storage - Ra 2020-10-05

    Description

      At present we use oldest_start_ts and oldest_start_txn only in fast truncate operation. We found the issue with this in WT-6494. We need to investigate a solution about repurposing these.
      We need to consider the impact of this repurpose for upgrade and downgrade. The scope of this ticket is:
      1. To make code changes and have a PR.
      2. Run a MongoDB patch build and WT stress testing build to understand the fallout.
      3. Analysis of the impact for upgrade and downgrade.

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          duplicates

          New Feature - A new feature of the product, which has yet to be developed. WT-6708 Repurpose oldest start txn to be newest txn in the aggregated time window

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

          Bug - A problem which impairs or prevents the functions of the product. WT-6494 __wt_time_value_validate failed because start transaction id is larger than stop transaction id

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Task - A task that needs to be done. WT-6548 Investigate fast truncate solution with new aggregate time information only in in-memory structures.

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

          Activity

            People

              backlog-server-storage-engines Backlog - Storage Engines Team
              vamsi.krishna@mongodb.com Vamsi Boyapati
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                Updated:
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