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Generate 4.17.4 release note #4826

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40 changes: 40 additions & 0 deletions site3/website/src/pages/release-notes.md
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<!-- markdown-link-check-disable -->
# Release notes

## 4.17.4

Release 4.17.4 includes multiple bug fixes and few dependency updates.
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Apache BookKeeper users are encouraged to upgrade to 4.17.4 if you are using 4.17.x.
The technical details of this release are summarized below.

#### Bugs

* [Fix] Replace Java `record` with nested class in ConcurrentLongHashMap (branch-4.17) [PR #4778](https://github.com/apache/bookkeeper/pull/4778)
* [Fix] ConcurrentLongHashMap throw ArrayIndexOutOfBoundsException [PR #4771](https://github.com/apache/bookkeeper/pull/4771)
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* Fix NPE in PendingAddOp.maybeTimeout() when clientCtx is null after recycling [PR #4760](https://github.com/apache/bookkeeper/pull/4760)
* Fix race condition NPE in V3 response handling during timeout check [PR #4737](https://github.com/apache/bookkeeper/pull/4737)
* [FIX] Fix IllegalThreadStateException in ComponentStarter shutdown hook [PR #4733](https://github.com/apache/bookkeeper/pull/4733)
* Issue 2422: Fix SyncLedgerIterator.hasNext() failing to iterate across ZK ledger ranges [PR #4731](https://github.com/apache/bookkeeper/pull/4731)
* Fix read thread blocking in sendResponseAndWait causing READ_ENTRY_REQUEST p99 latency spike [PR #4730](https://github.com/apache/bookkeeper/pull/4730)
* Count the connection failure as the condition of quarantine [PR #4727](https://github.com/apache/bookkeeper/pull/4727)
* [client] fix writeLac memory leak and thread safety issue [PR #4713](https://github.com/apache/bookkeeper/pull/4713)
* Fix the stream client python package name [PR #4703](https://github.com/apache/bookkeeper/pull/4703)
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* [fix]Fix entry loss due to incorrect lock of LedgerHandle [PR #4701](https://github.com/apache/bookkeeper/pull/4701)
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* [fix] Ledger Replication worker should throttle on verrification reads [PR #4678](https://github.com/apache/bookkeeper/pull/4678)
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* FlakyTest: BookieAutoRecoveryTest.testEmptyLedgerLosesQuorumEventually [PR #4672](https://github.com/apache/bookkeeper/pull/4672)
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#### Improvements

* [improve] Update readledger command to read all the entries from a bookie when first entry and last entry ids are not provided [PR #4692](https://github.com/apache/bookkeeper/pull/4692)
* test: migrate client module api tests to junit 5 [PR #4377](https://github.com/apache/bookkeeper/pull/4377)
* test: migrate client module bookie tests to junit 5 [PR #4359](https://github.com/apache/bookkeeper/pull/4359)
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#### Dependency updates

* Upgrade vertx to 4.5.27 to address CVE-2026-6860 [PR #4792](https://github.com/apache/bookkeeper/pull/4792)
* Upgrade thrift to 0.23.0 to address CVE-2026-43869 [PR #4791](https://github.com/apache/bookkeeper/pull/4791)
* build(deps): bump org.apache.commons:commons-lang3 from 3.17.0 to 3.20.0 [PR #4725](https://github.com/apache/bookkeeper/pull/4725)
* build(deps): bump io.vertx:vertx-core from 4.5.11 to 4.5.24 [PR #4702](https://github.com/apache/bookkeeper/pull/4702)
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#### Details

https://github.com/apache/bookkeeper/pulls?q=is%3Apr+label%3Arelease%2F4.17.4+is%3Amerged+
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## 4.18.0

Release 4.18.0 includes multiple important features, improvements, bug fixes and dependency/CVE updates.
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