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  1. Drivers
  2. DRIVERS-228

Use electionId to detect stale primaries.

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Done
    • None
    • None
    • None

    Description

      Drivers should remember greatest electionId seen, and disbelieve primaries with electionIds that aren't greater.

      electionId (in isMaster response) will be backported to 2.6.x.

      Justification: only one election per 30 secs, servers must have clocks synced within 30 sec and run 3.0+ (or the 2.6.x mongod with the backport) for read-your-writes consistency with w: "majority" and primary reads.

      Set false primaries to state "Unknown", will be re-checked by next periodic monitoring

      Justification: will step down and roll back soon, remains a primary with obsolete electionId until then

      Attachments

        Issue Links

          depends on

          Bug - A problem which impairs or prevents the functions of the product. CXX-597 Use electionId to detect stale primaries.

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

          Bug - A problem which impairs or prevents the functions of the product. CXX-598 Use electionId to detect stale primaries.

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

          Bug - A problem which impairs or prevents the functions of the product. PHPC-297 Use electionId to detect stale primaries.

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

          New Feature - A new feature of the product, which has yet to be developed. CDRIVER-636 Use electionId to detect stale primaries.

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

          New Feature - A new feature of the product, which has yet to be developed. NODE-455 Update SDAM specification support to cover electionId and Mongos load balancing.

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

          New Feature - A new feature of the product, which has yet to be developed. PYTHON-924 Use electionId to detect stale primaries.

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

          Improvement - An improvement or enhancement to an existing feature or task. CSHARP-1274 Use electionId reported by ismaster to avoid sending operations to false primaries

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

          Improvement - An improvement or enhancement to an existing feature or task. JAVA-1799 Use electionId reported by ismaster to avoid sending operations to false primaries

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

          Improvement - An improvement or enhancement to an existing feature or task. RUBY-912 Use electionId to detect stale primaries.

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-17975 Stale reads with WriteConcern Majority and ReadPreference Primary

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-19979 Detect replset clock skew from electionids

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-21744 Clients may fail to discover new primaries when clock skew between nodes is greater than electionTimeout

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

          Activity

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              barrie Barrie Segal
              barrie Barrie Segal
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              Dates

                Created:
                Updated:
                Resolved: