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Prepare v0.29.0 (#3184)
* update changelog and upgrading * add note about max voting power in abci spec * update version * changelog
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Ethan Buchman
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CHANGELOG.md
72
CHANGELOG.md
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# Changelog
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## v0.29.0
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*January 21, 2019*
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Special thanks to external contributors on this release:
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@bradyjoestar, @kunaldhariwal, @gauthamzz, @hrharder
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This release is primarily about making some breaking changes to
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the Block protocol version before Cosmos launch, and to fixing more issues
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in the proposer selection algorithm discovered on Cosmos testnets.
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The Block protocol changes include using a standard Merkle tree format (RFC 6962),
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fixing some inconsistencies between field orders in Vote and Proposal structs,
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and constraining the hash of the ConsensusParams to include only a few fields.
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The proposer selection algorithm saw significant progress,
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including a [formal proof by @cwgoes for the base-case in Idris](https://github.com/cwgoes/tm-proposer-idris)
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and a [much more detailed specification (still in progress) by
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@ancazamfir](https://github.com/tendermint/tendermint/pull/3140).
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Fixes to the proposer selection algorithm include normalizing the proposer
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priorities to mitigate the effects of large changes to the validator set.
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That said, we just discovered [another bug](https://github.com/tendermint/tendermint/issues/3181),
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which will be fixed in the next breaking release.
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While we are trying to stabilize the Block protocol to preserve compatibility
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with old chains, there may be some final changes yet to come before Cosmos
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launch as we continue to audit and test the software.
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Friendly reminder, we have a [bug bounty
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program](https://hackerone.com/tendermint).
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### BREAKING CHANGES:
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* CLI/RPC/Config
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* Apps
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- [state] [\#3049](https://github.com/tendermint/tendermint/issues/3049) Total voting power of the validator set is upper bounded by
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`MaxInt64 / 8`. Apps must ensure they do not return changes to the validator
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set that cause this maximum to be exceeded.
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* Go API
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- [node] [\#3082](https://github.com/tendermint/tendermint/issues/3082) MetricsProvider now requires you to pass a chain ID
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- [types] [\#2713](https://github.com/tendermint/tendermint/issues/2713) Rename `TxProof.LeafHash` to `TxProof.Leaf`
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- [crypto/merkle] [\#2713](https://github.com/tendermint/tendermint/issues/2713) `SimpleProof.Verify` takes a `leaf` instead of a
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`leafHash` and performs the hashing itself
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* Blockchain Protocol
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* [crypto/merkle] [\#2713](https://github.com/tendermint/tendermint/issues/2713) Merkle trees now match the RFC 6962 specification
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* [types] [\#3078](https://github.com/tendermint/tendermint/issues/3078) Re-order Timestamp and BlockID in CanonicalVote so it's
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consistent with CanonicalProposal (BlockID comes
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first)
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* [types] [\#3165](https://github.com/tendermint/tendermint/issues/3165) Hash of ConsensusParams only includes BlockSize.MaxBytes and
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BlockSize.MaxGas
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* P2P Protocol
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- [consensus] [\#3049](https://github.com/tendermint/tendermint/issues/3049) Normalize priorities to not exceed `2*TotalVotingPower` to mitigate unfair proposer selection
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heavily preferring earlier joined validators in the case of an early bonded large validator unbonding
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### FEATURES:
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### IMPROVEMENTS:
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- [rpc] [\#3065](https://github.com/tendermint/tendermint/issues/3065) Return maxPerPage (100), not defaultPerPage (30) if `per_page` is greater than the max 100.
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- [instrumentation] [\#3082](https://github.com/tendermint/tendermint/issues/3082) Add `chain_id` label for all metrics
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### BUG FIXES:
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- [crypto] [\#3164](https://github.com/tendermint/tendermint/issues/3164) Update `btcd` fork for rare signRFC6979 bug
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- [lite] [\#3171](https://github.com/tendermint/tendermint/issues/3171) Fix verifying large validator set changes
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- [log] [\#3125](https://github.com/tendermint/tendermint/issues/3125) Fix year format
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- [mempool] [\#3168](https://github.com/tendermint/tendermint/issues/3168) Limit tx size to fit in the max reactor msg size
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- [scripts] [\#3147](https://github.com/tendermint/tendermint/issues/3147) Fix json2wal for large block parts (@bradyjoestar)
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## v0.28.1
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*January 18th, 2019*
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@ -1,4 +1,4 @@
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## v0.29.0
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## v0.30.0
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*TBD*
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@ -11,31 +11,13 @@ Special thanks to external contributors on this release:
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* Apps
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* Go API
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- [node] \#3082 MetricsProvider now requires you to pass a chain ID
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- [types] \#2713 Rename `TxProof.LeafHash` to `TxProof.Leaf`
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- [crypto/merkle] \#2713 `SimpleProof.Verify` takes a `leaf` instead of a
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`leafHash` and performs the hashing itself
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* Blockchain Protocol
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* [crypto/merkle] \#2713 Merkle trees now match the RFC 6962 specification
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* [types] \#3078 Re-order Timestamp and BlockID in CanonicalVote so it's
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consistent with CanonicalProposal (BlockID comes
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first)
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* [types] \#3165 Hash of ConsensusParams only includes BlockSize.MaxBytes and
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BlockSize.MaxGas
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* P2P Protocol
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- [consensus] \#2960 normalize priorities to not exceed `2*TotalVotingPower` to mitigate unfair proposer selection
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heavily preferring earlier joined validators in the case of an early bonded large validator unbonding
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### FEATURES:
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### IMPROVEMENTS:
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- [rpc] \#3065 Return maxPerPage (100), not defaultPerPage (30) if `per_page` is greater than the max 100.
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- [instrumentation] \#3082 Add `chain_id` label for all metrics
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### BUG FIXES:
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- [crypto] \#3164 Update `btcd` fork for rare signRFC6979 bug
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- [lite] \#3171 Fix verifying large validator set changes
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- [log] \#3060 Fix year format
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- [mempool] \#3168 Limit tx size to fit in the max reactor msg size
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22
UPGRADING.md
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UPGRADING.md
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This guide provides steps to be followed when you upgrade your applications to
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a newer version of Tendermint Core.
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## v0.29.0
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This release contains some breaking changes to the block and p2p protocols,
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and will not be compatible with any previous versions of the software, primarily
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due to changes in how various data structures are hashed.
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Any implementations of Tendermint blockchain verification, including lite clients,
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will need to be updated. For specific details:
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- [Merkle tree](./docs/spec/blockchain/encoding.md#merkle-trees)
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- [ConsensusParams](./docs/spec/blockchain/state.md#consensusparams)
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There was also a small change to field ordering in the vote struct. Any
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implementations of an out-of-process validator (like a Key-Management Server)
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will need to be updated. For specific details:
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- [Vote](https://github.com/tendermint/tendermint/blob/develop/docs/spec/consensus/signing.md#votes)
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Finally, the proposer selection algorithm continues to evolve. See the
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[work-in-progress
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specification](https://github.com/tendermint/tendermint/pull/3140).
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For everything else, please see the [CHANGELOG](./CHANGELOG.md#v0.29.0).
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## v0.28.0
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This release breaks the format for the `priv_validator.json` file
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@ -166,6 +166,11 @@ the tags will be hashed into the next block header.
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The application may set the validator set during InitChain, and update it during
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EndBlock.
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Note that the maximum total power of the validator set is bounded by
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`MaxTotalVotingPower = MaxInt64 / 8`. Applications are responsible for ensuring
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they do not make changes to the validator set that cause it to exceed this
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limit.
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### InitChain
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ResponseInitChain can return a list of validators.
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@ -206,6 +211,7 @@ following rules:
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- if the validator does not already exist, it will be added to the validator
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set with the given power
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- if the validator does already exist, its power will be adjusted to the given power
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- the total power of the new validator set must not exceed MaxTotalVotingPower
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Note the updates returned in block `H` will only take effect at block `H+2`.
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@ -18,7 +18,7 @@ const (
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// TMCoreSemVer is the current version of Tendermint Core.
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// It's the Semantic Version of the software.
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// Must be a string because scripts like dist.sh read this file.
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TMCoreSemVer = "0.28.1"
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TMCoreSemVer = "0.29.0"
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// ABCISemVer is the semantic version of the ABCI library
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ABCISemVer = "0.15.0"
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@ -36,10 +36,10 @@ func (p Protocol) Uint64() uint64 {
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var (
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// P2PProtocol versions all p2p behaviour and msgs.
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P2PProtocol Protocol = 5
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P2PProtocol Protocol = 6
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// BlockProtocol versions all block data structures and processing.
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BlockProtocol Protocol = 8
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BlockProtocol Protocol = 9
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)
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//------------------------------------------------------------------------
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