What's Changed

• Add logs on active node when opening and sending a snapshot to a follower by @kubawi in #636

New Contributors

• @kubawi made their first contribution in #636

Full Changelog: v1.7.2...v1.7.3

What's Changed

• Warn about usage of snapshots by @otoolep in #618
• Support retrieving current term by @otoolep in #620
• Fix typos in docs, comments, and tests by @alexandear in #595
• chore: Add flag to skip legacy duplicate telemetry by @kavirajk in #630
• Introduce hashicorp/go-metrics compatibility by @mkeeler in #631

Full Changelog: v1.7.1...v1.7.2

This patch release fixes two potential issues with Pre-Vote which was added in 1.7.0. One of these has been observed in a single deployed instance but we've been unable to replicate the exact conditions so impact is difficult to assess. Out of an abundance of caution we strongly recommend all 1.7.0 users upgrade to 1.7.1 to avoid this issue occurring.

1. #605 Fixes the observed issue where a node looses leadership but is unable to get pre-votes accepted due to followers thinking it's still the leader. This was an implementation bug.
2. #609 fixes a theoretical issue (not come up with an actual reproduction yet) where a very specific sequence of pre-votes could artificially prevent cluster followers from holding elections even though there is no active leader succeeding to get a quorum of pre-vote responses.

CHANGES

• Raft multi version testing GH-559

IMPROVEMENTS

• Raft pre-vote extension implementation, activated by default. GH-530

BUG FIXES

• Fix serialize NetworkTransport data race on ServerAddr(). GH-591

CHANGES

• Add reference use of Hashicorp Raft by @otoolep in #584
• [COMPLIANCE] Add Copyright and License Headers by @hashicorp-copywrite in #580

IMPROVEMENTS

• Bump github.com/hashicorp/go-hclog from 1.5.0 to 1.6.2 by @dependabot in #583

BUG FIXES

• Fix rare leadership transfer failures when writes happen during transfer by @ncabatoff in #581

1.6.0 (November 15th, 2023)

CHANGES

• Upgrade hashicorp/go-msgpack to v2, with go.mod upgraded from v0.5.5 to v2.1.1. GH-577

  go-msgpack v2.1.1 is by default binary compatible with v0.5.5 ("non-builtin" encoding of time.Time), but can decode messages produced by v1.1.5 as well ("builtin" encoding of time.Time).

  However, if users of this libary overrode the version of go-msgpack (especially to v1), this could break compatibility if raft nodes are running a mix of versions.

  This compatibility can be configured at runtime in Raft using NetworkTransportConfig.MsgpackUseNewTimeFormat -- the default is false, which maintains compatibility with go-msgpack v0.5.5, but if set to true, will be compatible with go-msgpack v1.1.5.

IMPROVEMENTS

• Push to notify channel when shutting down. GH-567
• Add CommitIndex API GH-560
• Document some Apply error cases better GH-561

BUG FIXES

• Race with candidateFromLeadershipTransfer GH-570