NATS - v2.8.2



Go Version

  • 1.17.9: Both release executables and Docker images are built with this Go release.


  • JetStream:
    • A JSConsumerDeliveryNakAdvisory when a message is nak'ed. Thanks to @Coffeeri for the contribution (#3074)


  • JetStream:
    • KeyValue memory store performance for history of 1 (#3081)
    • A check was done twice (per message) for max_msg_per_subject and discard_new policy, which is the case for KV stores (#3101)
    • Reduce the number of RAFT warnings to 1 per second (for exact same log line) (#3100)
    • Bumped the default file store block size (#3102)


  • JetStream:
    • When reaching the max number of pull requests, the server would evict existing pending requests (with a 408 Request Canceled) instead of sending a 409 Exceeded MaxWaiting to the new request (#3099)


  • JetStream:
    • Step-down timing for consumers or streams. When becoming leader a consumer's stream sequence number could be reset (#3079)
    • Not able to recover a consumer if a source based stream which housed the consumer filter subject was removed. Also made updates to the /healthz behavior (#3080)
    • File store compaction would not work well for blocks with small messages and lots of interior deletes. The index file was also written too often (#3087)
    • Subject transforms and delivery subjects (#3088)
    • Lock inversion, but no known situations that would have triggered it (#3092)
    • Possible panic when checking for RAFT group leaderless status (#3094)
    • A pull consumer with a MaxWaiting of 1 would not send the notification that the request timed-out (#3099)
    • RAFT and clustering issues that may have contributed to repeated warnings about inability to store an entry to WAL and expected first catchup entry to be a snapshot and peer state (#3100)
  • Permissions:
    • Queue subscription's deny subjects were not always enforced. CVE-2022-29946 (#3090)

Complete Changes


May 4, 2022, 7:18 p.m.
Release v2.8.2
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