nats-io/nats-server v2.12.2

Release v2.12.2

on GitHub

Changelog

Refer to the 2.12 Upgrade Guide for backwards compatibility notes with 2.11.x.

Go Version

• 1.25.4 (#7520)

Dependencies

• github.com/klauspost/compress v1.18.1 (#7474)
• github.com/nats-io/nats.go v1.47.0 (#7474)
• golang.org/x/sys v0.38.0 (#7538)
• github.com/minio/highwayhash 070ab1a (#7539)

Added

General

• Support for the PROXY protocol (v1 and v2) for client connections, when proxy_protocol: true is set in the config (#7456)

JetStream

• Added meta_compact and meta_compact_size, advanced JetStream config options to control how many log entries must be present in the metalayer log before snapshotting and compaction takes place (#7484, #7521)
• Added write_timeout option for clients, routes, gateways and leafnodes which controls the behaviour on reaching the write_deadline, values can be default, retry or close (#7513)

Monitoring

• Added expvar /debug/vars endpoint to the monitoring port (#7469)
• Meta cluster snapshot statistics have been added to the /jsz endpoint (#7524)
• The /jsz endpoint can now show direct consumers with the direct-consumers?true flag (#7543)

Improved

General

• Binary stream snapshots are now preferred by default for nodes on new route connections (#7479)
• Reduced allocations in the sublist and subject transforms (#7519)

JetStream

• Improved the logging for observer mode (#7433)
• Improve interest detection when consumers are created or deleted across different servers (#7440)
• Improved the performance of enforcing max_bytes and max_msgs limits (#7455)
• Streams and consumers will no longer unnecessarily snapshot when being removed or scaling down (#7495)
• Streams are now loaded in parallel when enabling JetStream, often reducing the time it takes to start up the server (#7482, #7526)
• Log lines and errors related to offline/unsupported assets are now clearer (#7416, #7425)
• Stream catchups will now use delete ranges more aggressively, speeding up catchups of large streams with many interior deletes (#7512)
• Streams with subject transforms can now implicitly republish based on those transforms by configuring > for both republish source and destination (#7515)
• A race condition where subscriptions may not be set up before catchup requests are sent after a leader change has been fixed (#7518)
• Reduced heap allocations in hash checks (#7539)
• Healthchecks now correctly report when streams are catching up, instead of showing them as unhealthy (#7535)
• Potentially reduced the number of calls to the account resolver for assets that are not resident on that server (#7537)

Fixed

General

• When using message tracing, header corruption when setting the hop header has been fixed (#7443)
• Fixed a bug when validating leafnode proxies (#7444)
• Fixed a regression where token authentication would not be parsed correctly in leafnode URLs (#7452)
• Gateway subscribe/unsubscribe will no longer block on account fetches (#7449)
• Shutting down a server using lame-duck mode should no longer result in max connection exceeded errors (#7527)

JetStream

• Caches will now no longer expire unnecessarily when re-reading the same sequences multiple times in first-matching code paths (#7435)
• Fixed a bug in atomic batching where the incorrect field would be checked when looking for unsupported headers (#7436)
• Fixed a deadlock that could happen when interleaving a direct get request with a batch write (#7458)
• A couple of issues related to header handling have been fixed (#7465)
• No-wait requests now return a 400 No Messages response correctly if the stream is empty (#7466)
• Raft groups will now only report leadership status after a no-op entry on recovery (#7460)
• Fixed a race condition in the filestore that could happen between storing messages and shutting down (#7496)
• A panic that could occur when recovering streams in parallel has been fixed (#7503)
• An off-by-one when detecting holes at the end of a filestore block has been fixed (#7508)
• Indexing a message block in the filestore no longer tries to adjust the cache first sequence (#7508)
• Writing skip message records in the filestore no longer releases and reacquires the lock unnecessarily (#7508)
• Writing message records only overwrites the cache first sequence on the first indexed write (#7508)
• Fixed a bug on metalayer recovery where stream and consumer monitor goroutines for recreated assets would run with the wrong Raft group (#7510)
• Scaling up an asset from R1 now results in an installed snapshot, allowing recovery after restart if interrupted, avoiding a potential desync (#7509)
• Raft groups should no longer report no quorum incorrectly when shutting down (#7522)
• Consumers that existed in a metalayer snapshot but were deleted on recovery will no longer result in failing healthchecks (#7523)
• An off-by-one when detecting holes at the end of a filestore block has been fixed (#7525)
• Fixed a race condition that could happen with shutdown signals when shutting down JetStream (#7536)
• Fixed an issue in the filestore where skipping message sequences did not correctly update the cache accounting (#7534)
• Fixed a deadlock that could occur when purging a stream with mismatched consumer state (#7546)

Complete Changes

v2.12.1...v2.12.2