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tendermint/CHANGELOG_PENDING.md

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Unreleased Changes

vX.X

Special thanks to external contributors on this release:

Friendly reminder: We have a bug bounty program.

BREAKING CHANGES

  • CLI/RPC/Config

    • [config] #5598 The test_fuzz and test_fuzz_config P2P settings have been removed. (@erikgrinaker)
    • [config] #5728 fast_sync = "v1" is no longer supported (@melekes)
    • [cli] #5772 gen_node_key prints JSON-encoded NodeKey rather than ID and does not save it to node_key.json (@melekes)
    • [cli] #5777 use hyphen-case instead of snake_case for all cli commands and config parameters (@cmwaters)
    • [rpc] #6019 standardise RPC errors and return the correct status code (@bipulprasad & @cmwaters)
    • [rpc] #6168 Change default sorting to desc for /tx_search results (@melekes)
    • [cli] #6282 User must specify the node mode when using tendermint init (@cmwaters)
    • [state/indexer] #6382 reconstruct indexer, move txindex into the indexer package (@JayT106)
    • [cli] #6372 Introduce BootstrapPeers as part of the new p2p stack. Peers to be connected on startup (@cmwaters)
    • [config] #6462 Move PrivValidator configuration out of BaseConfig into its own section.

  • Apps

    • [ABCI] #6408 Change the key and value fields from []byte to string in the EventAttribute type. (@alexanderbez)
    • [ABCI] #5447 Remove SetOption method from ABCI.Client interface
    • [ABCI] #5447 Reset Oneof indexes for Request and Response.
    • [ABCI] #5818 Use protoio for msg length delimitation. Migrates from int64 to uint64 length delimiters.
    • [Version] #6494 TMCoreSemVer has been renamed to TMVersion.
      • It is not required any longer to set ldflags to set version strings

  • P2P Protocol

  • Go API

    • [mempool] #6529 The Context field has been removed from the TxInfo type. CheckTx now requires a Context argument. (@alexanderbez)
    • [abci/client, proxy] #5673 Async funcs return an error, Sync and Async funcs accept context.Context (@melekes)
    • [p2p] Removed unused function MakePoWTarget. (@erikgrinaker)
    • [libs/bits] #5720 Validate BitArray in FromProto, which now returns an error (@melekes)
    • [proto/p2p] Renamed DefaultNodeInfo and DefaultNodeInfoOther to NodeInfo and NodeInfoOther (@erikgrinaker)
    • [proto/p2p] Rename NodeInfo.default_node_id to node_id (@erikgrinaker)
    • [libs/os] Kill() and {Must,}{Read,Write}File() functions have been removed. (@alessio)
    • [store] #5848 Remove block store state in favor of using the db iterators directly (@cmwaters)
    • [state] #5864 Use an iterator when pruning state (@cmwaters)
    • [types] #6023 Remove tm2pb.Header, tm2pb.BlockID, tm2pb.PartSetHeader and tm2pb.NewValidatorUpdate.
      • Each of the above types has a ToProto and FromProto method or function which replaced this logic.
    • [light] #6054 Move MaxRetryAttempt option from client to provider.
      • NewWithOptions now sets the max retry attempts and timeouts (@cmwaters)
    • [all] #6077 Change spelling from British English to American (@cmwaters)
      • Rename "Subscription.Cancelled()" to "Subscription.Canceled()" in libs/pubsub
      • Rename "behaviour" pkg to "behavior" and internalized it in blockchain v2
    • [rpc/client/http] #6176 Remove endpoint arg from New, NewWithTimeout and NewWithClient (@melekes)
    • [rpc/client/http] #6176 Unexpose WSEvents (@melekes)
    • [rpc/jsonrpc/client/ws_client] #6176 NewWS no longer accepts options (use NewWSWithOptions and OnReconnect funcs to configure the client) (@melekes)
    • [internal/libs] #6366 Move autofile, clist,fail,flowrate, protoio, sync, tempfile, test and timer lib packages to an internal folder
    • [libs/rand] #6364 Removed most of libs/rand in favour of standard lib's math/rand (@liamsi)
    • [mempool] #6466 The original mempool reactor has been versioned as v0 and moved to a sub-package under the root mempool package. Some core types have been kept in the mempool package such as TxCache and it's implementations, the Mempool interface itself and TxInfo. (@alexanderbez)

  • Blockchain Protocol

  • Data Storage

    • [store/state/evidence/light] #5771 Use an order-preserving varint key encoding (@cmwaters)
    • [mempool] #6396 Remove mempool's write ahead log (WAL), (previously unused by the tendermint code). (@tychoish)

  • Tooling

    • [tools] #6498 Set OS home dir to instead of the hardcoded PATH. (@JayT106)

FEATURES

  • [config] Add --mode flag and config variable. See ADR-52 @dongsam
  • [rpc] #6329 Don't cap page size in unsafe mode (@gotjoshua, @cmwaters)
  • [pex] #6305 v2 pex reactor with backwards compatability. Introduces two new pex messages to accomodate for the new p2p stack. Removes the notion of seeds and crawling. All peer exchange reactors behave the same. (@cmwaters)
  • [crypto] #6376 Enable sr25519 as a validator key
  • [mempool] #6466 Introduction of a prioritized mempool. (@alexanderbez)
    • Priority and Sender have been introduced into the ResponseCheckTx type, where the priority will determine the prioritization of the transaction when a proposer reaps transactions for a block proposal. The sender field acts as an index.
    • Operators may toggle between the legacy mempool reactor, v0, and the new prioritized reactor, v1, by setting the mempool.version configuration, where v1 is the default configuration.
    • Applications that do not specify a priority, i.e. zero, will have transactions reaped by the order in which they are received by the node.
    • Transactions are gossiped in FIFO order as they are in v0.
  • [config/indexer] #6411 Introduce support for custom event indexing data sources, specifically PostgreSQL. (@JayT106)

IMPROVEMENTS

  • [types] #6478 Add block_id to newblock event (@jeebster)
  • [crypto/ed25519] #5632 Adopt zip215 ed25519 verification. (@marbar3778)
  • [privval] #5603 Add --key to init, gen_validator, testnet & unsafe_reset_priv_validator for use in generating secp256k1 keys.
  • [privval] #5725 Add gRPC support to private validator.
  • [privval] #5876 tendermint show-validator will query the remote signer if gRPC is being used (@marbar3778)
  • [abci/client] #5673 Async requests return an error if queue is full (@melekes)
  • [mempool] #5673 Cancel CheckTx requests if RPC client disconnects or times out (@melekes)
  • [abci] #5706 Added AbciVersion to RequestInfo allowing applications to check ABCI version when connecting to Tendermint. (@marbar3778)
  • [blockchain/v1] #5728 Remove in favor of v2 (@melekes)
  • [blockchain/v0] #5741 Relax termination conditions and increase sync timeout (@melekes)
  • [cli] #5772 gen_node_key output now contains node ID (id field) (@melekes)
  • [blockchain/v2] #5774 Send status request when new peer joins (@melekes)
  • [consensus] #5792 Deprecates the time_iota_ms consensus parameter, to reduce the bug surface. The parameter is no longer used. (@valardragon)
  • [store] #5888 store.SaveBlock saves using batches instead of transactions for now to improve ACID properties. This is a quick fix for underlying issues around tm-db and ACID guarantees. (@githubsands)
  • [consensus] #5987 Remove time_iota_ms from consensus params. Merge tmproto.ConsensusParams and abci.ConsensusParams. (@marbar3778)
  • [types] #5994 Reduce the use of protobuf types in core logic. (@marbar3778)
    • ConsensusParams, BlockParams, ValidatorParams, EvidenceParams, VersionParams, sm.Version and version.Consensus have become native types. They still utilize protobuf when being sent over the wire or written to disk.
  • [rpc/client/http] #6163 Do not drop events even if the out channel is full (@melekes)
  • [node] #6059 Validate and complete genesis doc before saving to state store (@silasdavis)
  • [state] #6067 Batch save state data (@githubsands & @cmwaters)
  • [crypto] #6120 Implement batch verification interface for ed25519 and sr25519. (@marbar3778)
  • [types] #6120 use batch verification for verifying commits signatures.
    • If the key type supports the batch verification API it will try to batch verify. If the verification fails we will single verify each signature.
  • [privval/file] #6185 Return error on LoadFilePV, LoadFilePVEmptyState. Allows for better programmatic control of Tendermint.
  • [privval] #6240 Add context.Context to privval interface.
  • [rpc] #6265 set cache control in http-rpc response header (@JayT106)
  • [statesync] #6378 Retry requests for snapshots and add a minimum discovery time (5s) for new snapshots.
  • [node/state] #6370 graceful shutdown in the consensus reactor (@JayT106)
  • [crypto/merkle] #6443 Improve HashAlternatives performance (@cuonglm)
  • [crypto/merkle] #6513 Optimize HashAlternatives (@marbar3778)
  • [p2p/pex] #6509 Improve addrBook.hash performance (@cuonglm)

BUG FIXES

  • [types] #5523 Change json naming of PartSetHeader within BlockID from parts to part_set_header (@marbar3778)
  • [privval] #5638 Increase read/write timeout to 5s and calculate ping interval based on it (@JoeKash)
  • [blockchain/v1] #5701 Handle peers without blocks (@melekes)
  • [blockchain/v1] #5711 Fix deadlock (@melekes)
  • [evidence] #6375 Fix bug with inconsistent LightClientAttackEvidence hashing (cmwaters)