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  1. Documentation
  2. DOCS-13511

Investigate changes in SERVER-43846: Add way to track the number of failovers that would have caused orphaned documents

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      Description

      Downstream Change Summary

      mongod shards only

      Not sure worth documenting. This new field doesn't have real purpose than for the products team to validate that the Range Deleter helps.

      New field in shardingStatistics called unfinishedMigrationFromPreviousPrimary, which contains the number of unfinished migrations left by previous primary.

      Description of Linked Ticket

      In order to validate the efficacy/helpfulness of the resumable range deleter project, it would be good to have a way to track statistics on when the resumability aspect of the range deleter is helpful. One way to do this would be to track on step up whether or not there were outstanding range deleter tasks - since these are tasks that would have led to orphaned documents had there not been a resumable range deleter.

      Scope of changes

      Impact to Other Docs

      MVP (Work and Date)

      Resources (Scope or Design Docs, Invision, etc.)

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            andrew.feierabend@mongodb.com Andrew Feierabend (Inactive)
            backlog-server-pm Backlog - Core Eng Program Management Team
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            Dates

              Created:
              Updated:
              Resolved:
              3 years, 46 weeks ago