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  1. Core Server
  2. SERVER-16432

Chunk migration data structures not properly synchronized with storage engines that offer document-level locking

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker - P1
    • Resolution: Fixed
    • Affects Version/s: 2.8.0-rc2
    • Fix Version/s: 2.8.0-rc4
    • Component/s: Sharding
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL

      Description

      The migrateFromStatus data structure is largely synchronized by the lock on the collection containing the chunk that is currently migrating. This implementation assumes that modifications of a collection exclusively lock that collection, which is no longer the case for document-level locking storage engines.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. SERVER-16426 d_migrate getActive() mtx is very hot

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-16540 Potential race in migration can have an aborted migration consume MigrateStatus::_cloneLocs

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

            Activity

              People

              Assignee:
              renctan Randolph Tan
              Reporter:
              schwerin Andy Schwerin
              Participants:
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                Dates

                Created:
                Updated:
                Resolved: