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  1. WiredTiger
  2. WT-3805

Avoid reading lookaside pages in truncate fast path

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.6.4, 3.7.3, WT3.1.0
    • None
    • None
    • Storage 2018-01-15, Storage 2018-01-29, Storage 2018-02-12, Storage 2018-02-26
    • v3.6

    Description

      When truncating data from a file that has associated lookaside entries, the optimization to avoid reading pages in for fast truncate is not implemented - which results in reading a lot of pages in cache along with their lookaside entries (thus they will be read in as dirty). We could avoid reading those pages by checking the visbility in the WT_PAGE_LOOKASIDE structure.

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        Issue Links

          depends on

          Bug - A problem which impairs or prevents the functions of the product. WT-3878 Iteration can lose its position when updating a limbo page

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

          Bug - A problem which impairs or prevents the functions of the product. WT-3933 test/format failure illegal WT_REF.state rolling back deleted page

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-3766 Lookaside sweep for obsolete updates

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-32139 Oplog truncation creates large amount of dirty data in cache

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-3909 add truncate support to test/format

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

          Bug - A problem which impairs or prevents the functions of the product. WT-3987 Avoid reading lookaside pages in truncate fast path

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

          Bug - A problem which impairs or prevents the functions of the product. WT-3996 Test truncate with timestamps and lookaside

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

          Web Link https://github.com/wiredtiger/wiredtiger/pull/3928

          Activity

            People

              keith.bostic@mongodb.com Keith Bostic (Inactive)
              alexander.gorrod@mongodb.com Alexander Gorrod
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              Dates

                Created:
                Updated:
                Resolved: