Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-67071

Sharding should not use hidden indexes

    XMLWordPrintable

Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Won't Do
    • None
    • None
    • None
    • ALL

    Description

      MongoDB 4.4 introduces the possibility to hide an index, this allows to ensure that there are no performance impact on dropping it.
      Currently the sharding system does not take into consideration this information and it can use an index even if it's hidden reducing the scope of testing the possibile impact in dropping an index

      db.test.insert({a:1})
      sh.shardCollection("test.test",{a:1})
      -> fail
      db.test.createIndex({a:1})
      db.test.hideIndex({a:1})
      sh.shardCollection("test.test",{a:1})
      

      Attachments

        Issue Links

          Activity

            People

              garaudy.etienne@mongodb.com Garaudy Etienne
              renato.riccio@mongodb.com Renato Riccio
              Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: