Uploaded image for project: 'WiredTiger'
  1. WiredTiger
  2. WT-5467

Make history store cursor part of each session, get rid of the cursor pool

    XMLWordPrintableJSON

Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT10.0.0, 4.4.0-rc0, 4.7.0
    • None
    • None
    • 5
    • Storage Engines 2020-01-27, Storage Engines 2020-02-10

    Description

      Following WT-5408, we intend to do the following:

      • Remove the LAS/history-store cursor pool
      • Embed an history store cursor in each session
      • Lazily open the cursor when required and close after the usage
      • Use session transaction to read from history store
      • Use no-transaction hack to write to history store (this should already exist in the durable history branch)

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. WT-5510 Fix test_hs01.py, test_hs06.py (test_hs_prepare_reads)

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-5501 Do not use default session to create a history store cursor when configuring

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

          Bug - A problem which impairs or prevents the functions of the product. WT-5497 Fix verify ignoring the return error in __verify_key_hs()

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-5408 Brainstorm the correctness of interaction between LAS transactions and application transactions

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

          Activity

            People

              sulabh.mahajan@mongodb.com Sulabh Mahajan
              sulabh.mahajan@mongodb.com Sulabh Mahajan
              Votes:
              0 Vote for this issue
              Watchers:
              1 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: