bookkeeper release-4.18.1

4.18.1

Release 4.18.1 includes a few new client APIs, several performance improvements, bug fixes and dependency updates.

Apache BookKeeper users are encouraged to upgrade to 4.18.1 if you are using 4.18.x. The technical details of this release are summarized below.

Features

• Pin a ledger’s callbacks to a caller-chosen worker thread via withOrderingKey PR #4881
• Add OpenBuilder.withKeepUpdateMetadata and DeleteBuilder.withLoggerContext to the builder API PR #4834

Improvements

• Add SingleThreadExecutor.executeOrRun and issue reads inline from the ledger’s own thread PR #4883
• Avoid per-checksum boxing in Java9IntHash by using MethodHandle.invokeExact PR #4876
• Use batch-draining queues in SingleThreadExecutor PR #4836
• Skip journal flush-trace loop when debug logging is disabled PR #4835
• Write journal entry length prefix and payload in a single BufferedChannel write PR #4833
• Use ThreadLocalRandom for thread selection in OrderedExecutor PR #4832
• Add spin-wait hint to BlockingMpscQueue producer-side busy loops PR #4831

Bugs

• Revert “Fix read thread blocking in sendResponseAndWait causing READ_ENTRY_REQUEST p99 latency spike (#4730)” PR #4830
• Prevent thread leak when BookKeeper client constructor fails PR #4798

Dependency updates

• Bump Jetty to 12.1.10 and fix binary license metadata PR #4871
• Bump org.apache.thrift:libthrift from 0.23.0 to 0.24.0 PR #4874
• Bump at.yawk.lz4:lz4-java from 1.10.2 to 1.11.1 PR #4869
• Bump bytes from 1.5.0 to 1.11.1 in native-io Rust module PR #4747

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Source apache/bookkeeper · release-4.18.1 · 2026-09-16 · upstream release

Mirrored verbatim for indexing. All rights belong to the upstream project.