Highlights

• Fixes a regression in service accounts/access keys for the root-user stopped working in the last release, a side-affect of a security bug-fix has been addressed.

• Fixes for rename2() usage in decommission and rebalance on versioned buckets with objects having more than a version. this can lead to an inconsistent state() on the object requiring manual intervention. If you are planning to rebalance or decommission on a cluster you are advised to upgrade to this release - #18964

• Fixes for memory leaks observed in the new websockets implementations, causing a gradual build-up of memory in GiBs on busy clusters with heavy READ operations.

• Optimizations for internode communication for variety of APIs ranging from IAM, Bucket Metadata. reducing internode connections to bare-minimum, there will be some more optimizations coming in this area for deploying MinIO at > 300 node clusters.

What's Changed

• move a collection of peer APIs to websockets by @harshavardhana in https://github.com/minio/minio/pull/18936
• Improve object reuse for grid messages by @klauspost in https://github.com/minio/minio/pull/18940
• batch: Fix a typo while validating smallerThan field by @vadmeste in https://github.com/minio/minio/pull/18942
• fix: null inline policy handling for access keys by @donatello in https://github.com/minio/minio/pull/18945
• log: Use error log type instead of Application/MinIO type by @vadmeste in https://github.com/minio/minio/pull/18930
• Fix some leftover issues from PR 18936 by @fwessels in https://github.com/minio/minio/pull/18946
• simplify deadlineWriter, re-use WithDeadline by @harshavardhana in https://github.com/minio/minio/pull/18948
• Fix ineffective recycling by @klauspost in https://github.com/minio/minio/pull/18952
• deprecate disk tokens, instead rely on deadlines and active monitoring by @harshavardhana in https://github.com/minio/minio/pull/18947
• move Make,Delete,Head,Heal bucket calls to websockets by @harshavardhana in https://github.com/minio/minio/pull/18951
• Fix mux client memory leak by @klauspost in https://github.com/minio/minio/pull/18956
• disconnected returns, an unexpected error to List() returning 500s by @harshavardhana in https://github.com/minio/minio/pull/18959
• xl: Disable rename2 in decommissioning/rebalance by @vadmeste in https://github.com/minio/minio/pull/18964
• Fix typo in api-router.go by @fwessels in https://github.com/minio/minio/pull/18955
• Add more advanced cases for dangling by @harshavardhana in https://github.com/minio/minio/pull/18968

Full Changelog: https://github.com/minio/minio/compare/RELEASE.2024-01-31T20-20-33Z...RELEASE.2024-02-04T22-36-13Z