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  1. Core Server
  2. SERVER-25725

Running {setFeatureCompatibilityVersion: "3.4"} on a 3.4 primary should kill 3.2 secondaries

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.3.14
    • Querying
    • None
    • Minor Change
    • TIG 2016-10-10, Query 2016-08-29, Query 2016-09-19

    Description

      Create a v=2 index on the "admin.system.version" collection when the featureCompatibilityVersion is set to 3.4. Versions of MongoDB earlier than 3.4 will fail create a v=2 index during steady-state replication. The index should be removed when the featureCompatibilityVersion is set to 3.2.

      In order to address how the implementation of initial sync on the 3.2 branch uses Cloner::copydb(), which automatically "upgrades" (i.e. silently discards) the index version and builds all indexes with the default index version of the node copying the data, the index version of the v=2 index should be returned as a decimal value in the "listIndexes" command response to prevent a 3.2 secondary from performing initial sync from a 3.4 mongod with featureCompatibilityVersion=3.4.

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          depends on

          Task - A task that needs to be done. SERVER-25156 Create index version V2

          • Major - P3 - Major loss of function.
          • Closed
          has to be done after

          Bug - A problem which impairs or prevents the functions of the product. SERVER-25969 When featureCompatibilityVersion is 3.2, a 3.4 node can't initial sync decimal data

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

          Task - A task that needs to be done. DOCS-9434 Docs for SERVER-25725: Running {setFeatureCompatibilityVersion: "3.4"} on a 3.4 primary should kill 3.2 secondaries

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-26335 Initial sync with buildIndexes=false fails

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-26179 Do not join the TaskRunner within a runner task in CollectionBulkLoaderImpl::init

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

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            People

              max.hirschhorn@mongodb.com Max Hirschhorn
              tess.avitabile@mongodb.com Tess Avitabile (Inactive)
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                Updated:
                Resolved: