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  1. WiredTiger
  2. WT-6136

Record incremental extent lists before merging them with earlier checkpoints

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT10.0.0, 4.2.7, 4.4.0-rc6, 4.7.0
    • None
    • None
    • 8
    • Storage - Tora 2020-05-18
    • v4.2

    Description

      In some MongoDB preliminary testing, it was observed that WiredTiger was returning that blocks were modified that actually were the same on disk.

      The data shows that incremental cursors returned all of the 16MB blocks in a ~90GB file. Backups copied those blocks ... noting which ones were actually unique relative to previous file system copies. They found a large discrepancy, only 16 blocks were different out of ~5600.

      Investigate on the WiredTiger side.

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        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. WT-6137 Fix calculation of bits versus bytes for incremental bitmap

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

          Bug - A problem which impairs or prevents the functions of the product. WT-6139 create incremental backup test that verifies block changes

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

          Bug - A problem which impairs or prevents the functions of the product. WT-6139 create incremental backup test that verifies block changes

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

          Activity

            People

              sue.loverso@mongodb.com Susan LoVerso
              sue.loverso@mongodb.com Susan LoVerso
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              Dates

                Created:
                Updated:
                Resolved: