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  1. Core Server
  2. SERVER-7186

Batched oplog application increases frequency of idempotency violations

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker - P1
    • Resolution: Fixed
    • Affects Version/s: 2.2.0
    • Fix Version/s: 2.2.1, 2.3.0
    • Component/s: Replication, Storage
    • Labels:
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL

      Description

      In 2.0.x, oplog entries are applied one at a time on each secondary. Thus, on a restart after a shutdown, only a single op can be applied twice. In 2.2.0, ops are applied in batches, so on a restart, potentially all the ops in the last batch can be reapplied. There are certain sequences of ops that violate idempotency guarantees needed to insure proper replication. In 2.2.0, if we detect such a sequence, the secondary halts replication and shuts down, unable to come back online.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-7242 Fatal error when upgrading to Mongo 2.2.0

          • Blocker - P1 - Blocks development and/or testing work, production could not run.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-7198 Do not go into rollback before reaching minvalid

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-7199 Bump minvalid when recloning ops on initial sync

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-6671 oplog is not strictly idempotent when unique index is present

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-3407 oplog is not idempotent for array operators, which could lead to silent data corruption (without journalling)

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4781 replica set initial sync failure when update cannot be applied to a future version of an object received via clone

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4943 $pop operator may replicate incorrectly

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4944 $pull operator may replicate incorrectly

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4945 $addToSet operator may replicate incorrectly

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-5961 $push array size constraint can cause incorrect replication of another field during initial sync

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-6669 update lacking positional match creates bad document

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-7177 state transition for replica sets isn't correct

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-7551 _id Unique key violation during initial sync

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

            Activity

              People

              Assignee:
              alerner Alberto Lerner
              Reporter:
              ian.whalen Ian Whalen
              Participants:
              Votes:
              9 Vote for this issue
              Watchers:
              19 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: