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  1. Indy Node
  2. INDY-1681

Switch off a replica that stopped because disconnected from a backup primary

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Details

    • Task
    • Status: Complete
    • Medium
    • Resolution: Done
    • None
    • 1.6.78
    • None

    Description

      If a backup primary node is disconnected, all replicas on this backup instance store all new requests and other replicas can't remove already ordered messages.
      For solve this problem we should detect that a backup primary node was disconnected for a long constant time and switch off the replica with this primary. (task: INDY-1680)

      Acceptance criteria:

      • Implement an abstract strategy to detect malicious backup primaries
      • Implement a strategy which detects malicious backup primaries by disconnection
        • We need to have a tolerance time we wait before reporting disconnection (like being disconnected for 10 secs in a row)
      • switch off a replica (a code in INDY-1680) once strategy detects malicious.
      • make sure that all replicas are switch on after a View Change
      • add tests
      • testing performance changes (shouldn't be worse) after disconnect a backup primary node
      • testing memory consumption (should be better)

      Attachments

        Issue Links

          blocks

          Task - A task that needs to be done. INDY-1602 Find out optimal message quotas

          • Medium - Has the potential to affect progress.
          • In Progress

          Bug - A problem which impairs or prevents the functions of the product. INDY-1574 Bad network pool has stopped to write txns under load

          • Medium - Has the potential to affect progress.
          • Complete

          Task - A task that needs to be done. INDY-1682 Improve the switch off replica logic to collecting all reasons (not only disconnected primary)

          • Medium - Has the potential to affect progress.
          • Complete

          Task - A task that needs to be done. INDY-1685 Start View Change if more than M replicas switched off.

          • Medium - Has the potential to affect progress.
          • To Develop
          is blocked by

          Task - A task that needs to be done. INDY-1680 Ability to switch off (remove) replicas with no changes of F value

          • Medium - Has the potential to affect progress.
          • Complete
          relates to

          Task - A task that needs to be done. INDY-1248 [Design] Fix memory leaks when primary on backup instance is disconnected

          • High - Serious problem that could block progress.
          • Complete

          Activity

            People

              NataliaDracheva Natalia Dracheva
              Toktar Renata Toktar
              Natalia Dracheva, Nikita Spivachuk, Renata Toktar
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              Dates

                Created:
                Updated:
                Resolved: