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0.8.0.md

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Release notes - version 0.8.0

Notes about new/updated Features

[API] /block/forgingInfo

The result json has been changed in this way:

  • Renamed two fields:
    • bestEpochNumber -> bestBlockEpochNumber
    • bestSlotNumber -> bestBlockSlotNumber
  • Added these two new fields:

    • currentEpochNumber

    • currentSlotNumber

      (their value is calculated based on the current timestamp, while the previous two were and are calculated based on the best block available in the history)

Force connecting to known peers

New configuration option onlyConnectToKnownPeers was added to network section of configuration file. When set to true it will force node to only try connecting to known peers. This option is disabled by default.

sparkz {
  network {
    onlyConnectToKnownPeers = false
  }
}

Forgers Network

This feature adds a dedicated connection pool reserved for connecting to forger nodes. The size of the dedicated connection pool is configured by maxForgerConnections option in network section of configuration file. The default value is 20. This limit works in addition to the one defined in the property network.maxOutgoingConnections.

Configuration option isForgerNode in the network section has to be set to true to indicate that the node is a forger and other nodes should prioritize connecting with it. Default value is false.

Nodes will prioritize connecting to and broadcasting blocks to forger nodes.

sparkz {
  network {
    maxForgerConnections = 20
    isForgerNode = false
  }
}

The intent of this feature is to minimize block propagation time between forgers, by increasing the likelihood of 1-hop connectivity between forgers.

Update instructions from previous version

  • delete peers directory from the sparkz.dataDir location
  • update configuration file with new options, if any new parameter is different from the default:
    • sparkz.network.onlyConnectToKnownPeers
    • sparkz.network.maxForgerConnections
    • sparkz.network.isForgerNode

Bug Fixes

  • Synchronization race condition fix

Improvements

  • Block synchronization performance improvements:
    • new block lookup strategy based on the parent block id
    • preserve ordering of block during synchronization
    • history comparison logic rework
    • other performance improvements

Full Changelog file here