Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-33973

Force cleanup of possibly remaining partial data (from failed collection/database drop) when rerunning dropCollection command

    XMLWordPrintableJSON

Details

    • Fully Compatible
    • v4.2, v4.0, v3.6
    • Sharding 2019-05-06, Sharding 2019-06-17, Sharding 2019-07-15, Sharding 2019-07-29, Sharding 2019-08-12
    • 15

    Description

      As described in SERVER-17397, with the way sharded collection/database create and drop are implemented currently, it is possible that a failed create or drop operation might leave around partial information such as incomplete chunks or collection entries. This forces administrators to do manual cleanup and poses the risk of corrupting data due to human error.

      We should implement `cleanupOrphanedCollection`/`cleanupOrphanedDatabase` commands, which perform this cleanup and do proper checking and synchronization.

      The code for these manual commands will eventually become the basis for implementing consistent drops using a resumable task queue.

      Attachments

        Issue Links

          depends on

          Task - A task that needs to be done. SERVER-41813 Allow ViewCatalog lookup without validating system views

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-17243 Dropped collection & database still has metadata

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-21179 Clean-up orphan chunk entries left from a failed shardCollection with initial split

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-6413 Validate shard tags and tag chunk regions when sharding collections

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-17397 Dropping a Database or Collection in a Sharded Cluster may not fully succeed

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

          Activity

            People

              blake.oler@mongodb.com Blake Oler
              kaloian.manassiev@mongodb.com Kaloian Manassiev
              Votes:
              5 Vote for this issue
              Watchers:
              19 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: