improve handling of empty vs nonexistent CollectionMetadata

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
    • 2.7.2
    • Affects Version/s: None
    • Component/s: Sharding
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      See attached jstest.

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      When a new collection is added and its data is migrated to another shard (from the primary shard), any mongos which had already authenticated a user to that DB before the collection is sharded and data move happened now cannot see this collection's data on the other shard.

      I think this may be related to mongod setting shard version for that collection to 0 when last chunk is migrated off of it, but that's problematic possibly in similar way we require flushRouterConfig when movePrimary is done for a database.

        1. auth_shard_collection.js
          5 kB
        2. noauth_shard_collection.js
          4 kB
        3. testOutputFailingNoauth.txt
          92 kB
        4. testOutputPassingNoauth.txt
          88 kB

            Assignee:
            Randolph Tan
            Reporter:
            Asya Kamsky
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              Created:
              Updated:
              Resolved: