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  1. Couchbase Server
  2. MB-57180

changes_left does not go to 0 in collection migration with OSO mode

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • Morpheus
    • 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.1.4, 7.0.5, 7.1.0, 7.1.1, 7.1.2, 7.1.3
    • XDCR
    • None
    • Untriaged
    • 0
    • Unknown

    Description

      This can be reproduced by running 5a_multi_target_migration_tc.shlib. If we turn off OSO, changes_left will go to 0.

      In ThroughSeqnoTracker, there are multiple DualSortedSeqnoListWithLock used that assume seqnos are sorted. In OSO mode, that's no longer the case. That causes list search to fail to find results. Here is one example:

      https://github.com/couchbase/goxdcr/blob/cc2da8364000df680ca476fb765ba334425f8ada/service_impl/through_seqno_tracker_service.go#L1707

      where searching seqno 7 in the list [7, 2] will fail to find its index.

      Attachments

        Issue Links

          backports to

          Bug - A problem which impairs or prevents the functions of the product. MB-57254 [B.P. 7.2.1] - changes_left does not go to 0 in collection migration with OSO mode

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

          Bug - A problem which impairs or prevents the functions of the product. MB-57255 [B.P. 7.1.5] - changes_left does not go to 0 in collection migration with OSO mode

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
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              ashokkumar.alluri Ashok Alluri
              lilei.chen Lilei Chen (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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