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make empty block deterministic #1287

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The fix is straight forward, following is some compatible analysis about why it's safe to apply the fix.

VbftBlockInfo.Proposer is only ever retrieved(immutable referenced) by :

func (blk *Block) getProposer() uint32 {
	return blk.Info.Proposer
}

blk.Info is only ever mutated by:

BlockPool.setBlockSealed,Server.constructProposalMsg,Block.Deserialize:

All of them will only set blk.Info to the non-empty one.

initVbftBlock:

This is only called after a block is sealed, so doesn't affect consensus.

laizy and others added 15 commits August 5, 2020 10:25
* implement offline witness in p2p

* refactor local rpc

* add rpc api

* add license

* fix comments

* check self is gov node before vote
* remove old gov node ip from members in subnet

* fix testcase
* Drop duplicate import

* Drop redundant return and break statement

* for true ==> for

* Fix bool cmp lint

should omit comparison to bool constant

* use or drop unused variables

* Drop empty branch

* Some fmt.Sprintf is useless, drop it

* should call self.quitWg.Add(1) before starting the goroutine to avoid a race

* drop for, using append

* Update cmd/tx_cmd.go

* Update consensus/vbft/node_sync.go

Co-authored-by: laizy <[email protected]>
@laizy laizy force-pushed the master branch 2 times, most recently from 8c8ee59 to dc599e9 Compare July 6, 2021 07:08
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5 participants