Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.5

Dependencies

• github.com/nats-io/jwt v2.5.8 (#5618)
• github.com/minio/highwayhash v1.0.3 (#5627)
• golang.org/x/crypto v0.25.0 (#5627)
• golang.org/x/sys v0.22.0 (#5627)

Improved

Embedded

• Export server function to initiate “lame duck mode” when embedding NATS (#5660)

JetStream

• CPU spike during recalculation of first message in the memory store (#5629)

Fixed

JetStream

• Fix duplicate callbacks on full wildcard match (#5610)
• Multiple fixes for the filestore per-subject state (#5616)
• Fix checkSkipFirstBlock which could return a negative index if the first block in the per-subject index is outdated (#5630)
• Don't ack messages if consumer is filtered and they were not applicable (#5639, #5612, #5638)
• Protect against possible panic in the filestore where the stree index is nil (#5662)
• Prevent panic when shutting down a server immediately after starting it (#5663)

Complete Changes

v2.10.17...v2.10.18

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.5

Improved

Embedded

• Export server function to initiate “lame duck mode” (#5660)

Fixed

JetStream

• Protect against possible panic in the filestore where the stree index is nil (#5662)
• Prevent panic when shutting down a server immediately after starting it (#5663)

Complete Changes

v2.10.18-RC.3...v2.10.18-RC.4

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.5

Fixed

JetStream

• Ensure the “create consumer” advisory is published for R1 consumers by the node it is provisioned to (#5649)
• Fix calculation of consumer NumPending resulting in a higher count than the total available messages in the stream (#5655)

Chores

Build

• Use Go’s ReadBuildInfo if available to detect the git commit (#5651)
• Add serverVersion variable set via ldflags (#5650)

Complete Changes

v2.10.18-RC.2...v2.10.18-RC.3

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.5

Fixed

JetStream

• Don't ack messages if consumer is filtered and they were not applicable (#5639, #5612, #5638)

Complete Changes

v2.10.18-RC.1...v2.10.18-RC.2

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.5

Dependencies

nats-io/jwt v2.5.8 (#5618)
github.com/minio/highwayhash v1.0.3 (#5627)
golang.org/x/crypto v0.25.0 (#5627)
golang.org/x/sys v0.22.0 (#5627)

Improved

JetStream

• CPU spike during recalc of first msg in memstore. #5629

Fixed

JetStream

• Fixed duplicate callbacks on full wildcard Match (#5610)
• Fixed filestore FSS state (#5616)
• Fixed checkSkipFirstBlock could return a negative index if psim.fblk is outdated. #5630

Complete Changes

v2.10.17...v2.10.18-RC.1

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Go Version

• 1.22.4 (#5487)

Dependencies

• golang.org/x/sys v0.21.0 (#5508)
• golang.org/x/crypto v0.24.0 (#5509)
• github.com/klauspost/compress v1.17.9 (#5538)
• github.com/nats-io/nats.go v1.36.0 (#5538)

Added

Monitoring

• Experimental /raftz monitoring endpoint for retrieving internal Raft group state for diagnostic purposes (#5530)

Improved

Core

• Reorder struct fields in stree for improved memory alignment (#5517)

JetStream

• Improve performance of calculating num-pending and interest state of a stream (#5476)
• Improve leadership change signaling (#5504, #5505)
• Improved memory-based stream behavior during server restarts (#5506)
• Reset election timer when leaving observer mode enabling quicker leadership hand-off (#5516)
• Ensure ack processing is consistent and correct between leader and followers for replicated consumers (#5524)
• Use per-subject info to speed up load-last filestore operations with wildcard filters (#5546)
• Populate missing per-subject info after skipping blocks when calculating filtered pending (#5545)
• Reduced time taken to process consumer deletes when there is a large gap between the consumer ack floor and the stream last sequence (#5547)
• No longer retrieve the WAL state unnecessarily when installing Raft snapshots (#5552)
• Increased filestore block and per-subject info cache expiry times to help improve performance on sparse streams (#5568)
• Reduce allocations in isMatch in filestore/memstore (#5573)
• Improved handling of out-of-date first blocks in per-subject info entries (#5577)
• Use stree for message block subject indexing instead of hashmaps (#5559)
• Avoid loading last message blocks on LoadNextMsg miss (#5584)
• Add node48 node size to stree, providing better memory utilisation for some subject spaces (#5585)
• Logging message when exceeding JetStream account limits now prints the account (#5597)

Monitoring

• Rate-limit statsz updates which reduces load for very large clusters (#5470, #5485) Thanks to @wjordan for the report and contribution!

Changed

MQTT

• Do not wait for JS responses when disconnecting the session (#5575)

Fixed

Accounts

• Import/export cycle detection (#5494) Thanks to @semakasyrok for the contribution!
• Allow callout users to be revoked (#5555, #5561)
• Fixed a data race when updating payload limits from JWT claims (#5593)

Core

• Allow client kick to also kick leafnode connections (#5587)
• Fix imports sometimes not being available for a client after server restarts (#5588, #5589)

JetStream

• Avoid panic on corrupted TAV file (#5464)
• Performance regression in LoadNextMsg with very sparse or no messages (#5475)
• Stepdown candidate when append-entry is ahead of last log term (#5481)
• Fix possible redelivery after successful ack during rollout restarts (#5482)
• Fix returning maximum consumers limit reached on some consumer updates (#5489)
• Fix last sequence stream reset on server restart (#5497)
• Fix data between creating a consumer and determining cluster state (#5501)
• Prevent interleaving of setting/unsetting observer states (#5503)
• Fix accounting for consumers with a different replication factor than the parent stream (#5521)
• Fix potential segfault if mset.mirror was nil when calculating the last loaded message (#5522)
• Follower stores no longer inherit the redelivered consumer delivered sequence which could break ack gap fill (#5533)
• Direct Raft proposals will no longer bypass the internal proposal queue which could cause incorrect interleaving of state (#5543)
• Audit streams that capture $JS.>, $JS.API.>, $JSC.> and $SYS.> subjects are now only allowed if NoAck is set, avoiding potential misconfiguration that could affect the JetStream API, with the exception of the more specific $JS.EVENT.> and $SYS.ACCOUNT.> as these were allowed before (#5548, #5556)
• Streams from failed snapshot restores are now cleaned up correctly, fixing potential false positive warnings on /healthz after a failed restore (#5549)
• Ensure that internal system clients used by Raft groups are always cleaned up correctly, fixing a potential memory leak (#5566) Thanks to @slice-srinidhis for the report!
• Fixed a potential panic when updating stream sources on an existing stream (#5571)
• Fixed panic when creating a stream with an incorrect mapping destination (#5570, #5571)
• Fixed returning error when trying to update a stream that has sources with bad subject transforms (#5574)
• Fixed a bug that would return “no message found” for last_per_subject (#5578)
• Correctly leave Raft observer state after applies were paused, i.e. due to a catch-up in progress (#5586)
• JetStream no longer leaks memory when creating and deleting Raft groups (#5600)
• Fixed a potential panic in consumer ack queue handling (#5601)
• Fixed data race in runAsLeader (#5604)

Leafnodes

• Prevent potential message duplication for queue-group subscriptions (#5519) Thanks to @pcsegal for the report!

Monitoring

• Ensure consistency of the delivered stream sequence in /jsz filtered consumer reporting (#5528)

Chores

Config

• Clarify comment on re-use of config Options type for embedded mode (#5472) Thanks to @robinkb for the report and contribution!

JetStream

• Added additional memory-based Raft tests (#5515)

Complete Changes

v2.10.16...v2.10.17

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Includes everything in v2.10.17-RC.8.

Go Version

• 1.22.4

Improved

JetStream

• Logging message when exceeding JetStream account limits now prints the account (#5597)

Fixed

Accounts

• Fixed a data race when updating payload limits from JWT claims (#5593)

JetStream

• JetStream no longer leaks memory when creating and deleting Raft groups (#5600)
• Fixed a potential panic in consumer ack queue handling (#5601)

Complete Changes

v2.10.17-RC.8...v2.10.17-RC.9

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Includes everything in v2.10.17-RC.7.

Go Version

• 1.22.4

Improved

JetStream

• Avoid loading last message blocks on LoadNextMsg miss (#5584)
• Add node48 node size to stree, providing better memory utilisation for some subject spaces (#5585)

Fixed

Core

• Allow client kick to also kick leafnode connections (#5587)
• Fix imports sometimes not being available for a client after server restarts (#5588, #5589)

JetStream

• Correctly leave Raft observer state after applies were paused, i.e. due to a catch-up in progress (#5586)

Complete Changes

v2.10.17-RC.7...v2.10.17-RC.8

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Includes everything in v2.10.17-RC.6.

Go Version

• 1.22.4

Improved

JetStream

• Reduce allocations in isMatch in filestore/memstore (#5573)
• Improved handling of out of date fblks in psim entries (#5577)
• Use stree for message block indexing vs map (#5559)

Changed

MQTT

• Do not wait for JS responses when disconnecting the session (#5575)

Fixed

JetStream

• Fixed panic when creating a stream with a wrong mapping destination (#5570, #5571)
• Fixed returning error when trying to update a stream with a source with a bad subject transform (#5574)
• Fixed bug that would return no msg found for loadLast (#5578)

Complete Changes

v2.10.17-RC.6...v2.10.17-RC.7

Changelog

Refer to the 2.10 Upgrade Guide for backwards compatibility notes with 2.9.x.

Includes everything in v2.10.17-RC.5.

Go Version

• 1.22.4

Improved

JetStream

• Increased filestore block and per-subject info cache expiry times to help improve performance on sparse streams (#5568)

Fixed

Accounts

• Allow callout users to be revoked (#5555, #5561)

JetStream

• Ensure that internal system clients used by Raft groups are always cleaned up correctly, fixing a potential memory leak (#5566)

Complete Changes

v2.10.17-RC.5...v2.10.17-RC.6