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  1. WiredTiger
  2. WT-7442

RTS to open dhandle only when the dhandle has unstable updates

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Details

    • Bug
    • Status: Closed
    • Critical - P2
    • Resolution: Fixed
    • 4.4.0
    • 4.4.6, WT10.0.1, 5.0.0-rc0
    • None
    • None
    • 8
    • Storage - Ra 2021-05-03
    • v4.4

    Description

      In rollback to stable, we need to open all the dhandles to check whether any work is required to rollback the particular table. If we have a lot of files in the database, we would have a lot of dhandles open in WiredTiger after rollback to stable. The following checkpoint after rollback to stable then would become very expensive in this case. Some customers with large dhandles are experiencing performance issues during shut down and startup since upgrading to mongodb 4.4.

      We need to figure out a solution to reduce the checkpoint overhead caused by the dhandles opened by rollback to stable.

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        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. WT-8413 Open WT connection cause "too many open files" issue

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-56222 Startup logging should provide regular status updates for the undergoing recovery

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-7452 Improve logging when recovery (and RTS) is taking a long time

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

          Activity

            People

              ravi.giri@mongodb.com Ravi Giri
              chenhao.qu@mongodb.com Chenhao Qu
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              Dates

                Created:
                Updated:
                Resolved: