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  1. Core Server
  2. SERVER-36004

SessionUpdateTracker should ignore no-op entries for pre/post image oplogs

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Details

    • Fully Compatible
    • ALL
    • v4.0, v3.6
    • Sharding 2019-03-11
    • 13

    Description

      These pre/post entries is only valid if paired with the corresponding update/delete oplog entries. Since the update/delete oplog entry always comes after the pre/post entry and both of these entries contain the same amount information necessary to properly replicate the config.transactions table, the pre/post entry should be ignored. Otherwise, it can create a situation where the secondary replication would mistakenly think that write was performed if sees the pre/post entry even though the update/delete oplog entry was removed due to replication rollback.

      Note: it should not ignore no-op entries generated during session migration.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-31769 Retrying findAndModify can error if oplog write for was rolled back

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-31769 Retrying findAndModify can error if oplog write for was rolled back

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-67492 Failed chunk migrations can lead recipient shard to have divergent config.transactions records between primary and secondaries

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

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              randolph@mongodb.com Randolph Tan
              randolph@mongodb.com Randolph Tan
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                Created:
                Updated:
                Resolved: