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Сonsensus restarts after 25 minutes instead of the 3-hour interval after start #828

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oleksandrSydorenkoJ opened this issue Feb 9, 2024 · 1 comment
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@oleksandrSydorenkoJ
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oleksandrSydorenkoJ commented Feb 9, 2024

Describe the bug
The consensus has 2 built-in timers for automatic restart in case of disconnection from the majority of nodes.

  1. STUCK_RESTART_INTERVAL_MS - triggers after 3 hours from the last mined block.
  2. HEALTHCHECK_ON_START_RETRY_TIME_SEC - starts after the Skaled launch and lasts for 1500 seconds.

If the consensus loses the majority and restarts after 3 hours, the second Skaled start will be triggered by HEALTHCHECK_ON_START_RETRY_TIME_SEC. This complicates the chain recovery procedure in case of a crash - it may happen that downloading a large snapshot physically becomes impossible within 25 minutes, but it is possible within 3 hours.
The result of https://github.com/skalenetwork/internal-support/issues/51

Note:
All Skaled, that have been restarted without majority of nodes automatically will be restarted in 3 hours.
All Skaled, that have been restarted with the majority of nodes after /issues/51 - will be restarted every 25 minutes

Preconditions:
Active schain medium type (16 nodes)
At least 1 chain on node

Version
skalenetwork/schain:3.17.1
skalenetwork/schain:3.18.0-beta.0

Steps to reproduce

  1. Stop 6 containers on schain
  2. Wait for 3 hours and restart the one of 10 active container on Node A
  3. Wait for 25 minutes and check skaled logs on the restarted container from node A

Expected behavior
Consensus should wait 3 hours before restarting himself if the majority of active nodes.

Actual state:
Consensus restarts after 25 minutes on node A when no majority on nodes.

message (40).txt

@oleksandrSydorenkoJ oleksandrSydorenkoJ added the bug Something isn't working label Feb 9, 2024
@oleksandrSydorenkoJ oleksandrSydorenkoJ changed the title Сonsensus restarts after 25 minutes if it fails to connect 2/3 peers since the last start Сonsensus restarts after 25 minutes if it fails to connect 2/3 peers when 11 active nodes Feb 9, 2024
@oleksandrSydorenkoJ oleksandrSydorenkoJ changed the title Сonsensus restarts after 25 minutes if it fails to connect 2/3 peers when 11 active nodes Сonsensus restarts after 25 minutes instead of the 3-hour interval after start Feb 9, 2024
@DmytroNazarenko DmytroNazarenko added this to the SKALE 2.4 milestone Feb 9, 2024
@PolinaKiporenko PolinaKiporenko moved this to Ready For Pickup in SKALE Engineering 🚀 Feb 13, 2024
@kladkogex kladkogex modified the milestones: SKALE 2.4, SKALE 2.5 Mar 21, 2024
@kladkogex
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Moving to 2.5 as we dont have time for it in 2.4

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