QBFT, Bonsai, and Snap-Sync testing - Besu - LF Decentralized Trust


    
        
            
                
                                

        


        
            

            






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QBFT, Bonsai, and Snap-Sync testing












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QBFT, Bonsai, and Snap-Sync testing

	Matthew Whitehead





Owned by Matthew Whitehead


Last updated: Jul 03, 2024










Update: PR https://github.com/hyperledger/besu/pull/7140 now merged and adds working experimental support for QBFT + Bonsai + Snap sync


Previous notes below:
Prior to being able to recommend Bonsai and/or snap sync for permissioned chains work is needed to make the combination of QBFT, Bonsai, and snap-sync work reliably.
Summary of PRs related to this work:
	https://github.com/hyperledger/besu/pull/7204 (merged to main) - prevents persisting of proposed blocks to ensure only committed blocks are persisted to world state
	https://github.com/hyperledger/besu/pull/7140 (WIP) - adds an experimental flag to enable QBFT + snap sync. Quits snap-sync early when a new chain scenario is detected.

Issues seen before now when Bonsai and/or snap-sync is used with QBFT:
	https://github.com/hyperledger/besu/issues/6680
	https://github.com/hyperledger/besu/issues/6053

For those working on this feature, the tar file below can be used to run a 4-validator QBFT chain for testing. The 4th node has Xsynchronizer-world-state-request-parallelism=1 set as without this, the account data range requests fail to all be marked as complete.













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