Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-92484

Killing chunk migration session after commit can leave uncleaned orphan documents

    • Type: Icon: Bug Bug
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • Catalog and Routing
    • ALL
    • 0

      It could happen that the session used for executing a chunk migration get killed through the killSessions command. If this happens after the migration get committed, but before the range deletion task get scheduled (e.g. here), we will leave the chunk migration document (status: committed) on disk and most most importantly we will not mark the range deletion task as ready to be processed and thus orphan documents will not be cleaned. This situation will last until the donor shard receive an operation for the very same namespace or until the next replicaset failover of the donor shard.

            Assignee:
            Unassigned Unassigned
            Reporter:
            tommaso.tocci@mongodb.com Tommaso Tocci
            Votes:
            0 Vote for this issue
            Watchers:
            8 Start watching this issue

              Created:
              Updated: