tendermint/CHANGELOG_PENDING.md

Pending

Special thanks to external contributors with PRs included in this release: ackratos, james-ray, bradyjoestar, peerlink, Ahmah2009, bluele, b00f

BREAKING CHANGES:

• CLI/RPC/Config

  • [config] #2169 Replace MaxNumPeers with MaxNumInboundPeers and MaxNumOutboundPeers
  • [config] #2300 Reduce default mempool size from 100k to 5k, until ABCI rechecking is implemented.
  • [rpc] #1815 /commit returns a signed_header field instead of everything being top-level

• Apps

  • [abci] Added address of the original proposer of the block to Header
  • [abci] Change ABCI Header to match Tendermint exactly
  • [abci] #2159 Update use of Validator (see ADR-018):
    • Remove PubKey from Validator (so it's just Address and Power)
    • Introduce ValidatorUpdate (with just PubKey and Power)
    • InitChain and EndBlock use ValidatorUpdate
    • Update field names and types in BeginBlock
  • [state] #1815 Validator set changes are now delayed by one block
    • updates returned in ResponseEndBlock for block H will be included in RequestBeginBlock for block H+2

• Go API

  • [lite] #1815 Complete refactor of the package
  • [node] #2212 NewNode now accepts a *p2p.NodeKey (@bradyjoestar)
  • [libs/common] #2199 Remove Fmt, in favor of fmt.Sprintf
  • [libs/common] SplitAndTrim was deleted
  • [libs/common] #2274 Remove unused Math functions like MaxInt, MaxInt64, MinInt, MinInt64 (@Ahmah2009)
  • [libs/clist] Panics if list extends beyond MaxLength
  • [crypto] #2205 Rename AminoRoute variables to no longer be prefixed by signature type.

• Blockchain Protocol

  • [state] #1815 Validator set changes are now delayed by one block (!)
    • Add NextValidatorSet to State, changes on-disk representation of state
  • [state] #2184 Enforce ConsensusParams.BlockSize.MaxBytes (See ADR-020).
    • Remove ConsensusParams.BlockSize.MaxTxs
    • Introduce maximum sizes for all components of a block, including ChainID
  • [types] Updates to the block Header:
    • #1815 NextValidatorsHash - hash of the validator set for the next block, so the current validators actually sign over the hash for the new validators
    • #2106 ProposerAddress - address of the block's original proposer
  • [consensus] #2203 Implement BFT time
    • Timestamp in block must be monotonic and equal the median of timestamps in block's LastCommit
  • [crypto] #2239 Secp256k1 signature changes (See ADR-014):
    • format changed from DER to r || s, both little endian encoded as 32 bytes.
    • malleability removed by requiring s to be in canonical form.

• P2P Protocol

  • [p2p] #2263 Update secret connection to use a little endian encoded nonce
  • [blockchain] #2213 Fix Amino routes for blockchain reactor messages (@peerlink)

FEATURES:

• [types] #2015 Allow genesis file to have 0 validators (@b00f)
  • Initial validator set can be determined by the app in ResponseInitChain
• [rpc] #2161 New event ValidatorSetUpdates for when the validator set changes
• [crypto/multisig] #2164 Introduce multisig pubkey and signature format
• [libs/db] #2293 Allow passing options through when creating instances of leveldb dbs

IMPROVEMENTS:

• [docs] Lint documentation with write-good and stop-words.
• [scripts] #2196 Added json2wal tool, which is supposed to help our users restore (@bradyjoestar) corrupted WAL files and compose test WAL files (@bradyjoestar)
• [mempool] #2234 Now stores txs by hash inside of the cache, to mitigate memory leakage
• [mempool] #2166 Set explicit capacity for map when updating txs (@bluele)

BUG FIXES:

• [config] #2284 Replace db_path with db_dir from automatically generated configuration files.
• [mempool] #2188 Fix OOM issue from cache map and list getting out of sync
• [state] #2051 KV store index supports searching by tx.height (@ackratos)
• [rpc] #2327 /dial_peers does not try to dial existing peers
• [node] #2323 Filter empty strings from config lists (@james-ray)
• [abci/client] #2236 Fix closing GRPC connection (@bradyjoestar)