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  1. Documentation
  2. DOCS-13506

Investigate changes in SERVER-46567: Update shell methods Mongo.setReadPref and cursor.readPref to support hedging

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 4.4.0-rc0, 4.7.0
    • manual, Server
    • None

    Description

      Description

      Downstream Change Summary

      Mongo.setReadPref and Cursor.readPref now take in an additional argument hedgeOptions.

      Description of Linked Ticket

      Change Mongo.setReadPref(mode, tagSet) to Mongo.setReadPref(mode, tagSet, hedgeOptions) and cursor.readPref(mode, tagSet) to cursor.readPref(mode, tagSet, hedgeOptions), where hedgeOptions is an optional argument of the form {enabled: <bool>}.

      Similar to the $readPreference subkey {hedge: {enabled: <bool>}}, passing {} is equivalent to passing

      {enabled: true}

      since 'enabled' defaults to true.

      Scope of changes

      Impact to Other Docs

      MVP (Work and Date)

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

      Attachments

        Issue Links

          documents

          New Feature - A new feature of the product, which has yet to be developed. SERVER-45439 Add support for per operation hedging via an explicit read preference

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

          Task - A task that needs to be done. SERVER-46567 Update shell methods Mongo.setReadPref and cursor.readPref to support hedging

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

          Task - A task that needs to be done. DOCS-13363 Investigate changes in SERVER-45439: Add support for per operation hedging via an explicit read preference

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

          Task - A task that needs to be done. DOCS-13369 Investigate changes in SERVER-45440: Add support for implicit operation hedging when using readPreference mode nearest

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

          Task - A task that needs to be done. DOCS-13363 Investigate changes in SERVER-45439: Add support for per operation hedging via an explicit read preference

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

          Activity

            People

              kay.kim@mongodb.com Kay Kim (Inactive)
              backlog-server-pm Backlog - Core Eng Program Management Team
              Jess Mokrzecki Jess Mokrzecki
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              Dates

                Created:
                Updated:
                Resolved:
                3 years, 12 weeks, 2 days ago