v3.2.7 released

Dragonboat v3.2.7 is a minor maintenance release.

Improvements

• upgraded to github.com/lni/goutils v1.2.1

v3.2.6 released

Dragonboat v3.2.6 is a minor maintenance release.

Improvements

• fixed how updates from stopped node are handled

v3.2.5 released

Dragonboat v3.2.5 is a minor maintenance release.

Improvements

• fixed a data race issue related to rejected Raft config change

v3.2.4 released

Dragonboat v3.2.4 is a minor maintenance release.

Improvements

• fixed a bug in snapshot compaction.
• fixed a bug in message queue.

v3.2.3 released

Dragonboat v3.2.3 is a minor maintenance release.

Improvements

• fixed a bug to allow witness node to generate dummy snapshot
• reduced memory footprint when there are intensive concurrent reads

v3.2.2 released

Dragonboat v3.2.2 is a minor maintenance release.

Improvements

• resolved an issue with protobuf v1.4.0.

v3.2.1 released

Dragonboat v3.2.1 is a minor maintenance release.

Improvements

• resolved a protobuf issue to allow etcd and dragonboat to be used in the same project.

v3.2.0 released

New features

• Added snappy compression support for Raft entires and snapshots.
• Added experimental witness support.
• Added new API to allow LogDB compaction to be manually triggered.
• Added event listener support to allow users to be notified for certain Raft events.
• Added system event listener support to allow users to be notified for certain system events.
• Added Raft related metrics to exported.
• Added rate limit support to control the maximum bandwidth used for snapshot streaming.
• Updated the C++ binding to cover all v3.1 features. Thanks JasonYuchen for working on that.
• Added a virtual filesystem layer to support more filesystem related tests.
• Added experimental Windows and FreeBSD support.

Improvements

• Removed the restriction on max proposal payload size.
• Re-enabled the range delete support in LogDB.
• Better handling of concurrent snapshot streams.
• Extensive testing have been done on a high performance native Go KV store called Pebble.
• TolerateCorruptedTailRecords is now the default WAL recovery mode in the RocksDB based LogDB.

Breaking changes

There is no breaking change for regular users. However,

• If you have built customized transport module implementing the raftio.IRaftRPC interface, there is minor change to the config.RaftRPCFactoryFunc type. See github.com/lni/dragoboat/config/config.go for details.
• The default transport module has been updated, it is no longer compatible with earlier versions of dragonboat.
• The default LogDB data format is no longer backward compactible with v3.1 or earlier.

Other changes

• LevelDB support has been marked as depreciated. It will be removed from dragonboat in the next major release.

v3.1.5 released

Dragonboat v3.1.5 is a minor maintenance release.

Improvements

• allow RocksDB Raft Log settings to be tuned by users

v3.1.4 released

Dragonboat v3.1.4 is a minor bug fix release. All v3.1.x users are recommended to upgrade.

Bug fixes

• fixed excessive memory usage in certain workload