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  1. Core Server
  2. SERVER-30642

Raise election timeouts as a way to provide more stable replica set test topologies

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.6.5, 3.7.3
    • Replication
    • None
    • Fully Compatible
    • ALL
    • v3.6
    • Repl 2018-01-29, Repl 2018-02-12, TIG 2018-03-12
    • 15

    Description

      For Javascript tests that aren't trying to directly test any aspect of the consensus machinery, we should consider making unwanted elections impossible, so as to cut down on the issue of spurious topology changes interfering with the actions a test is executing. Raising election timeouts to some very high value could be one solution to this. It would make tests more resilient to machine/network slowness, and improve their stability. Setting the priority of secondary nodes to 0 (in addition to high election timeouts) could also help reduce the triggering of unexpected election.

      We may want to consider reviewing tests and see which ones we consider "consensus agnostic", and those we do not.

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          depends on

          Task - A task that needs to be done. SERVER-32688 FSM replication suites should give secondaries zero votes

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-32794 Make timeouts unrelated to elections not depend on election timeout

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-32691 Create passthrough for w="majority" with 2-node replica set to address lost test coverage

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed
          related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-38749 Concurrent stepdown suites on 3.6 branch still use 5-second election timeout

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

          Task - A task that needs to be done. SERVER-35383 Increase electionTimeoutMillis for the ContinuousStepdown hook used in stepdown suites

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-44214 Give replica set secondaries votes in concurrency suites

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

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              jonathan.abrahams Jonathan Abrahams
              william.schultz@mongodb.com William Schultz (Inactive)
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                Created:
                Updated:
                Resolved: