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  1. Core Server
  2. SERVER-31634

FeatureCompatibilityVersion::setIfCleanStartup() should store FCV=3.4 for shardsvrs

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    Details

    • Type: Task
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.6.0-rc2
    • Component/s: Querying
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Sprint:
      Query 2017-11-13
    • Linked BF Score:
      50

      Description

      A standalone or replica set started with shardsvr currently does not write a featureCompatibilityVersion on clean startup. It should write a featureCompatibilityVersion 3.4 document. This is safe, since there will be no 3.6 features to strip out if the shard is added to an FCV=3.4 cluster. This is important, because in 3.6, we require the featureCompatibilityVersion document to be present.

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                  Updated:
                  Resolved: