nats-io/nats-server v2.10.25 on GitHub

Changelog

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

JetStream

Raft groups will no longer snapshot too often in some situations, improving performance (#6277)
Optimistically perform stream and consumer snapshots on a normal shutdown (#6279)
The stream snapshot interval has been removed, now relying on the compaction minimum, which improves performance (#6289)
Raft groups will no longer report current while they are paused with pending commits (#6317)
Unnecessary client info fields have been removed from stream and consumer assignment proposals, API advisories and stream snapshot/restore advisories (#6326, #6338)
Reduced lock contention between the JetStream lock and Raft group locks (#6335)
Advisories will only be encoded and sent when there is interest, reducing CPU usage (#6341)
Consumers with inactivity thresholds will now start less clean-up goroutines, which can reduce load on the goroutine scheduler (#6344)
Consumer cleanup goroutines will now stop faster when the server shuts down (#6351)

JetStream

Subject state consistency with some message removal patterns (#6226)
A performance issue has been fixed when updating the per-subject state (#6235)
Fixed consistency issues with detecting partial writes in the filestore (#6283)
A race condition between removing peers and updating replica counts has been fixed (#6316)
Pre-acks for a sequence are now removed when the message is removed, correcting a potential memory leak (#6325)
Metalayer snapshot errors are now surfaced correctly (#6361)
Healthchecks no longer re-evaluate stream and consumer assignments, avoiding some streams and consumers being unexpectedly recreated shortly after a deletion (#6362)
Clients should no longer timeout on a retried ack with the AckAll policy after a server restart (#6392)
Replicated consumers should no longer get stuck after leader changes due to incorrect accounting (#6387)
Consumers will now correctly handle the case where messages queued for delivery have been removed, fixing a delivery slowdown (#6387, #6399)
The API in-flight metric has been fixed so that it does not drift after the queue has been dropped (#6373)
Handles for temporary files are now closed correctly if compression errors occur (#6390) — Thanks to @deem0n for the contribution!
JetStream will now shut down correctly when detecting that the store directory underlying filesystem has become read-only (#6292) — Thanks to @souravagrawal for the contribution!

Leafnodes

Fixed an interest propagation issue that could occur when the hub has a user with subscribe permissions on a literal subject (#6291)
Fixed a bug where all queue interest across leafnodes could be dropped over gateways in a supercluster deployment after a leafnode connection drops (#6377)

Tests

A number of unit tests have been improved (#6150, #6278, #6297, #6300, #6343, #6329, #6330, #6331, #6331, #6334, #6364)