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Changelog

Unreleased

0.19.4 (October 28, 2022)

  • #599 Populate ImmutableTree creation in copy function with missing field
  • #589 Wrap tree.addUnsavedRemoval() with missing if !tree.skipFastStorageUpgrade statement

0.19.3 (October 8, 2022)

  • ProofInner.Hash() prevents both right and left from both being set. Only one is allowed to be set.

Note: It is recommended to not use the native proof structure of IAVL in its current form. Please refer to ics23 for IAVL proofs

0.19.2 (October 6, 2022)

  • #547 Implement skipFastStorageUpgrade in order to skip fast storage upgrade and usage.
  • #531 Upgrade to fast storage in batches.

0.19.1 (August 3, 2022)

Improvements

  • #525 Optimization: use fast unsafe bytes->string conversion.
  • #506 Implement cache abstraction.

Bug Fixes

  • #524 Fix: MutableTree.Get.

0.19.0 (July 6, 2022)

Breaking Changes

  • #514 Downgrade Tendermint to 0.34.x
  • #500 Return errors instead of panicking.

Improvements

0.18.0 (March 10, 2022)

Breaking Changes

  • Bumped Tendermint to 0.35.1

Improvements

  • #468 Fast storage optimization for queries and iterations
  • #452 Optimization: remove unnecessary (*bytes.Buffer).Reset right after creating buffer.
  • #445 Bump github.com/tendermint/tendermint to v0.35.0
  • #453,#456 Optimization: buffer reuse
  • #474 bump github.com/confio/ics23 to v0.7
  • #475 Use go v1.17

0.17.3 (December 1, 2021)

Bug Fixes

  • #448 Change RMutex to Mutex in VersionExists().

0.17.2 (November 13, 2021)

Improvements

  • #440 Introduce Cosmos SDK iterator type directly into IAVL. Improves the iterator performance by 40%.

0.17.1 (September 15, 2021)

Bug Fixes

  • #432 Fix race condition related to Cosmos SDK and nodeDB usage.

0.17.0 (August 31, 2021)

Improvements

  • Various performance improvements. Credits: Orijtech.
  • Updating dependencies

CLI Breaking Changes

  • #396 Add "prefix" arg to iaviewer.

0.16.0 (May 04, 2021)

Breaking Changes

  • #355 Get in iavlServer no longer returns an error if the requested key does not exist. GetResponse now contains a NotFound boolean to indicate that a key does not exist, and the returned index will be that of the next occupied key.

Improvements

  • #355 Add support for GetByIndex to iavlServer and RPC interface.

Bug Fixes

  • #385 Fix GetVersioned - now it works with LazyLoadVersion.
  • #374 Fix large genesis file commit.

0.15.3 (December 21, 2020)

Special thanks to external contributors on this release: @odeke-em

Improvements

  • #352 Reuse buffer to improve performance of GetMembershipProof() and GetNonMembershipProof().

0.15.2 (December 14, 2020)

Special thanks to external contributors on this release: @odeke-em

Bug Fixes

  • #347 Fix another integer overflow in decodeBytes() that can cause panics for certain inputs. The ValueOp and AbsenceOp proof decoders are vulnerable to this via malicious inputs since 0.15.0.

  • #349 Fix spurious blank lines in PathToLeaf.String().

0.15.1 (December 13, 2020)

Special thanks to external contributors on this release: @odeke-em

Bug Fixes

  • #340 Fix integer overflow in decodeBytes() that can cause panics on 64-bit systems and out-of-memory issues on 32-bit systems. The ValueOp and AbsenceOp proof decoders are vulnerable to this via malicious inputs. The bug was introduced in 0.15.0.

0.15.0 (November 23, 2020)

The IAVL project has moved from https://github.com/tendermint/iavl to https://github.com/cosmos/iavl. This changes the module import path, which is now github.com/cosmos/iavl.

Users upgrading from 0.13 should read important upgrade information in the 0.14.0 release below.

Breaking Changes

  • #285 The module path has changed from github.com/tendermint/iavl to github.com/cosmos/iavl.

  • #304 Empty trees now return hashes rather than nil from e.g. Hash(), WorkingHash(), and SaveVersion(), for conformance with RFC-6962.

  • #317 LoadVersion() and LazyLoadVersion() now error if called with a positive version number on an empty tree.

Improvements

  • #296 Add iavlserver, a gRPC/REST API server.

  • #276 Introduced ImmutableTree.GetMembershipProof() and GetNonMembershipProof() to return ics23 ExistenceProof and NonExistenceProof respectively.

  • #265 Encoding of tree nodes and proofs is now done using the Go stdlib and Protobuf instead of Amino. The binary encoding is identical.

Bug Fixes

  • #309 Allow SaveVersion() for old, empty versions as long as the new version is identical.

0.14.3 (November 23, 2020)

Special thanks to external contributors on this release: @klim0v

Bug Fixes

  • #324 Fix DeleteVersions not properly removing orphans, and add DeleteVersionsRange to delete a range.

0.14.2 (October 12, 2020)

Bug Fixes

  • #318 Fix constant overflow when compiling for 32bit machines.

0.14.1 (October 9, 2020)

Improvements

  • #299 Added Options.InitialVersion to specify the initial version for new IAVL trees.

  • #312 Added MutableTree.SetInitialVersion() to set the initial version after tree initialization.

Bug Fixes

  • #288 Fix panics when generating proofs for keys that are all 0xFF.

0.14.0 (July 2, 2020)

Important information: the pruning functionality introduced with IAVL 0.13.0 via the options KeepEvery and KeepRecent has problems with data corruption, performance, and memory usage. For these reasons, this functionality has now been removed. All 0.13 users are urged to upgrade, and to not change their pruning settings while on 0.13.

Make sure to follow these instructions when upgrading, to avoid data corruption:

  • If using KeepEvery: 1 (the default) then upgrading to 0.14 is safe.

  • Otherwise, upgrade after saving a multiple of KeepEvery - for example, with KeepEvery: 1000 stop 0.13 after saving e.g. version 7000 to disk. A later version must never have been saved to the tree. Upgrading to 0.14 is then safe.

  • Otherwise, consider using the Repair013Orphans() function to repair faulty data in databases last written to by 0.13. This must be done before opening the database with IAVL 0.14, and a database backup should be taken first. Upgrading to 0.14 is then safe.

  • Otherwise, after upgrading to 0.14, do not delete the last version saved to disk by 0.13 - this contains incorrect data that may cause data corruption when deleted, making the database unusable. For example, with KeepEvery: 1000 then stopping 0.13 at version 7364 (saving 7000 to disk) and upgrading to 0.14 means version 7000 must never be deleted.

    It may be possible to delete it if the exact same sequence of changes have been written to the newer versions as before the upgrade, and all versions between 7000 and 7364 are deleted first, but thorough testing and backups are recommended if attempting this.

Users wishing to prune historical versions can do so via MutableTree.DeleteVersion().

Breaking Changes

  • #274 Remove pruning options KeepEvery and KeepRecent (see warning above) and the recentDB parameter to NewMutableTreeWithOpts().

Improvements

  • #282 Add Repair013Orphans() to repair faulty orphans in a database last written to by IAVL 0.13.x

  • #271 Add MutableTree.DeleteVersions() for deleting multiple versions.

  • #235 Reduce ImmutableTree.Export() buffer size from 64 to 32 nodes.

Bug Fixes

  • #281 Remove unnecessary Protobuf dependencies.

  • #275 Fix data corruption with LoadVersionForOverwriting.

0.13.3 (April 5, 2020)

Bug Fixes

  • [import]#230 Set correct version when committing an empty import.

0.13.2 (March 18, 2020)

Improvements

  • [#213] Added ImmutableTree.Export() and MutableTree.Import() to export tree contents at a specific version and import it to recreate an identical tree.

0.13.1 (March 13, 2020)

Improvements

  • [dep]#220 Update tm-db to 0.5.0, which includes a new B-tree based MemDB used by IAVL for non-persisted versions.

Bug Fixes

  • [nodedb]#219 Fix a concurrent database access issue when deleting orphans.

0.13.0 (January 16, 2020)

Special thanks to external contributors on this release: @rickyyangz, @mattkanwisher

BREAKING CHANGES

  • [pruning]#158 NodeDB constructor must provide keepRecent and keepEvery fields to define PruningStrategy. All Save functionality must specify whether they should flushToDisk as well using flushToDisk boolean argument. All Delete functionality must specify whether object should be deleted from memory only using the memOnly boolean argument.
  • [dep]#194 Update tm-db to 0.4.0 this includes interface breaking to return errors.

IMPROVEMENTS

Bug Fix

  • [orphans]#177 Collect all orphans after remove (@rickyyangz)

0.12.4 (July 31, 2019)

IMPROVEMENTS

  • #46 Removed all instances of cmn (tendermint/tendermint/libs/common)

0.12.3 (July 12, 2019)

Special thanks to external contributors on this release: @ethanfrey

IMPROVEMENTS

  • Implement LazyLoadVersion (@alexanderbez) LazyLoadVersion attempts to lazy load only the specified target version without loading previous roots/versions. - see goDoc
  • Move to go.mod (@Liamsi)
  • iaviewer command to visualize IAVL database from leveldb (@ethanfrey)

0.12.2 (March 13, 2019)

IMPROVEMENTS

0.12.1 (February 12, 2019)

IMPROVEMENTS

  • Use Tendermint v0.30

0.12.0 (November 26, 2018)

BREAKING CHANGES

0.11.1 (October 29, 2018)

IMPROVEMENTS

  • Uses GoAmino v0.14

0.11.0 (September 7, 2018)

BREAKING CHANGES

  • Changed internal database key format to store int64 key components in a full 8-byte fixed width (#107)
  • Removed some architecture dependent methods (e.g., use Get instead of Get64 etc) (#96)

IMPROVEMENTS

  • Database key format avoids use of fmt.Sprintf fmt.Sscanf leading to ~10% speedup in benchmark BenchmarkTreeLoadAndDelete (#107, thanks to @silasdavis)

0.10.0

BREAKING CHANGES

  • refactored API for clean separation of mutable and immutable tree (#92, #88); with possibility to:
    • load read-only snapshots at previous versions on demand
    • load mutable trees at the most recently saved tree

BUG FIXES

  • remove memory leaks (#92)

IMPROVEMENTS

  • Change tendermint dep to ^v0.22.0 (#91)

0.10.0 (July 11, 2018)

BREAKING CHANGES

  • getRangeProof and Get[Versioned][Range]WithProof return nil proof/error if tree is empty.

0.9.2 (July 3, 2018)

IMPROVEMENTS

  • some minor changes: mainly lints, updated parts of documentation, unexported some helpers (#80)

0.9.1 (July 1, 2018)

IMPROVEMENTS

  • RangeProof.ComputeRootHash() to compute root rather than provide as in Verify(hash)
  • RangeProof.Verify*() first require .Verify(root), which memoizes

0.9.0 (July 1, 2018)

BREAKING CHANGES

  • RangeProof.VerifyItem doesn't require an index.
  • Only return values in range when getting proof.
  • Return keys as well.

BUG FIXES

  • traversal bugs in traverseRange.

0.8.2

  • Swap tmlibs for tendermint/libs
  • Remove sha256truncated in favour of tendermint/crypto/tmhash - same hash function but technically a breaking change to the API, though unlikely to effect anyone.

NOTE this means IAVL is now dependent on Tendermint Core for the libs (since it makes heavy use of the db package). Ideally, that dependency would be abstracted away, and/or this repo will be merged into the Cosmos-SDK, which is currently is primary consumer. Once it achieves greater stability, we could consider breaking it out into it's own repo again.

0.8.1

July 1st, 2018

BUG FIXES

  • fix bug in iterator going outside its range

0.8.0 (June 24, 2018)

BREAKING CHANGES

  • Nodes are encoded using proto3/amino style integers and byte slices (ie. varints and varint prefixed byte slices)
  • Unified RangeProof
  • Proofs are encoded using Amino
  • Hash function changed from RIPEMD160 to the first 20 bytes of SHA256 output

0.7.0 (March 21, 2018)

BREAKING CHANGES

  • LoadVersion and Load return the loaded version number
    • NOTE: this behaviour was lost previously and we failed to document in changelog, but now it's back :)

0.6.1 (March 2, 2018)

IMPROVEMENT

  • Remove spurious print statement from LoadVersion

0.6.0 (March 2, 2018)

BREAKING CHANGES

  • NewTree order of arguments swapped
  • int -> int64, uint64 -> int64
  • NewNode takes a version
  • Node serialization format changed so version is written right after size
  • SaveVersion takes no args (auto increments)
  • tree.Get -> tree.Get64
  • nodeDB.SaveBranch does not take a callback
  • orphaningTree.SaveVersion -> SaveAs
  • proofInnerNode includes Version
  • ReadKeyXxxProof consolidated into ReadKeyProof
  • KeyAbsentProof doesn't include Version
  • KeyRangeProof.Version -> Versions

FEATURES

  • Implement chunking algorithm to serialize entire tree

0.5.0 (October 27, 2017)

First versioned release! (Originally accidentally released as v0.2.0)