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| <title data-rh="true">Apache BookKeeper</title><meta data-rh="true" property="og:title" content="Apache BookKeeper"><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/releases"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" name="description" content="Version 4.16.4 is the latest release of BookKeeper. The current stable version is 4.14.8."><meta data-rh="true" property="og:description" content="Version 4.16.4 is the latest release of BookKeeper. The current stable version is 4.14.8."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/releases"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/releases" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/releases" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css"> |
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class="darkToggleIcon_wfgR"><path fill="currentColor" d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27C17.45,17.19,14.93,19,12,19 c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z M12,3c-4.97,0-9,4.03-9,9s4.03,9,9,9s9-4.03,9-9c0-0.46-0.04-0.92-0.1-1.36 c-0.98,1.37-2.58,2.26-4.4,2.26c-2.98,0-5.4-2.42-5.4-5.4c0-1.81,0.89-3.42,2.26-4.4C12.92,3.04,12.46,3,12,3L12,3z"></path></svg></button></div><div class="searchBox_ZlJk"></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div id="docusaurus_skipToContent_fallback" class="main-wrapper mainWrapper_z2l0"><main class="container container--fluid margin-vert--lg"><div class="row mdxPageWrapper_j9I6"><div class="col col--8"><article><h1>Releases</h1><p>Version <strong>4.16.4</strong> is the latest release of BookKeeper. The current stable version is <strong>4.14.8</strong>.</p><p><a href="/release-notes">Release notes</a></p><div><div><h3 id="4.16.5">Version <!-- -->4.16.5</h3><table><thead><th>Release</th><th>Link</th><th>Crypto files</th></thead><tbody><tr><td>Source</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-4.16.5-src.tar.gz">bookkeeper-<!-- -->4.16.5<!-- -->-src.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-4.16.5-src.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-4.16.5-src.tar.gz.sha512">sha512</a></td></tr><tr><td>Binary</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-server-4.16.5-bin.tar.gz">bookkeeper-server-<!-- -->4.16.5<!-- -->-bin.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-server-4.16.5-bin.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.16.5/bookkeeper-server-4.16.5-bin.tar.gz.sha512">sha512</a></td></tr></tbody></table></div><div><h3 id="4.15.5">Version <!-- -->4.15.5</h3><table><thead><th>Release</th><th>Link</th><th>Crypto files</th></thead><tbody><tr><td>Source</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-4.15.5-src.tar.gz">bookkeeper-<!-- -->4.15.5<!-- -->-src.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-4.15.5-src.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-4.15.5-src.tar.gz.sha512">sha512</a></td></tr><tr><td>Binary</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-server-4.15.5-bin.tar.gz">bookkeeper-server-<!-- -->4.15.5<!-- -->-bin.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-server-4.15.5-bin.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.15.5/bookkeeper-server-4.15.5-bin.tar.gz.sha512">sha512</a></td></tr></tbody></table></div><div><h3 id="4.14.8">Version <!-- -->4.14.8</h3><table><thead><th>Release</th><th>Link</th><th>Crypto files</th></thead><tbody><tr><td>Source</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-4.14.8-src.tar.gz">bookkeeper-<!-- -->4.14.8<!-- -->-src.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-4.14.8-src.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-4.14.8-src.tar.gz.sha512">sha512</a></td></tr><tr><td>Binary</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-server-4.14.8-bin.tar.gz">bookkeeper-server-<!-- -->4.14.8<!-- -->-bin.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-server-4.14.8-bin.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.14.8/bookkeeper-server-4.14.8-bin.tar.gz.sha512">sha512</a></td></tr></tbody></table></div><div><h3 id="4.13.0">Version <!-- -->4.13.0</h3><table><thead><th>Release</th><th>Link</th><th>Crypto files</th></thead><tbody><tr><td>Source</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-4.13.0-src.tar.gz">bookkeeper-<!-- -->4.13.0<!-- -->-src.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-4.13.0-src.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-4.13.0-src.tar.gz.sha512">sha512</a></td></tr><tr><td>Binary</td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-server-4.13.0-bin.tar.gz">bookkeeper-server-<!-- -->4.13.0<!-- -->-bin.tar.gz</a></td><td><a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-server-4.13.0-bin.tar.gz.asc">asc</a>, <a href="https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=bookkeeper/bookkeeper-4.13.0/bookkeeper-server-4.13.0-bin.tar.gz.sha512">sha512</a></td></tr></tbody></table></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="release-integrity">Release Integrity<a href="#release-integrity" class="hash-link" aria-label="Direct link to Release Integrity" title="Direct link to Release Integrity"></a></h2><p>You must <a href="https://www.apache.org/info/verification.html" target="_blank" rel="noopener noreferrer">verify</a> the integrity of the downloaded files. We provide OpenPGP signatures for every release file. This signature should be matched against the <a href="https://www.apache.org/dist/bookkeeper/KEYS" target="_blank" rel="noopener noreferrer">KEYS</a> file which contains the OpenPGP keys of BookKeeper's Release Managers. We also provide SHA-512 checksums for every release file. After you download the file, you should calculate a checksum for your download, and make sure it is the same as ours.</p><p>If you want to download older, archived releases, they are available in the <a href="http://archive.apache.org/dist/bookkeeper/" target="_blank" rel="noopener noreferrer">Apache archive</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="getting-started">Getting Started<a href="#getting-started" class="hash-link" aria-label="Direct link to Getting Started" title="Direct link to Getting Started"></a></h2><p>Once you've downloaded a BookKeeper release, instructions on getting up and running with a standalone cluster that you can run your laptop can be found |
| in <a href="/docs/getting-started/run-locally">Run BookKeeper locally</a>.</p><p>If you need to connect to an existing BookKeeper cluster using an officially supported client, see client docs for these languages:</p><table><thead><tr><th align="left">Client Guide</th><th align="left">API docs</th></tr></thead><tbody><tr><td align="left"><a href="/docs/api/ledger-api">The BookKeeper Client</a></td><td align="left"><a href="https://bookkeeper.apache.org//docs/latest/api/javadoc" target="_blank" rel="noopener noreferrer">Javadoc</a></td></tr><tr><td align="left"><a href="/docs/api/distributedlog-api">The DistributedLog Library</a></td><td align="left"><a href="https://distributedlog.io/docs/latest/api/java" target="_blank" rel="noopener noreferrer">Javadoc</a></td></tr></tbody></table><h2 class="anchor anchorWithStickyNavbar_LWe7" id="news">News<a href="#news" class="hash-link" aria-label="Direct link to News" title="Direct link to News"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="9-may-2022-release-4150-available">9 May, 2022 Release 4.15.0 available<a href="#9-may-2022-release-4150-available" class="hash-link" aria-label="Direct link to 9 May, 2022 Release 4.15.0 available" title="Direct link to 9 May, 2022 Release 4.15.0 available"></a></h3><p>This is the 31st release of Apache BookKeeper ! |
| See <a href="/release-notes#4150">BookKeeper 4.15.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="22-december-2021-release-4144-available">22 December, 2021 Release 4.14.4 available<a href="#22-december-2021-release-4144-available" class="hash-link" aria-label="Direct link to 22 December, 2021 Release 4.14.4 available" title="Direct link to 22 December, 2021 Release 4.14.4 available"></a></h3><p>This is the 30th release of Apache BookKeeper ! |
| See <a href="/release-notes#4144">BookKeeper 4.14.4 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="9-november-2021-release-4143-available">9 November, 2021 Release 4.14.3 available<a href="#9-november-2021-release-4143-available" class="hash-link" aria-label="Direct link to 9 November, 2021 Release 4.14.3 available" title="Direct link to 9 November, 2021 Release 4.14.3 available"></a></h3><p>This is the 29th release of Apache BookKeeper ! |
| See <a href="/release-notes#4143">BookKeeper 4.14.3 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="23-august-2021-release-4142-available">23 August, 2021 Release 4.14.2 available<a href="#23-august-2021-release-4142-available" class="hash-link" aria-label="Direct link to 23 August, 2021 Release 4.14.2 available" title="Direct link to 23 August, 2021 Release 4.14.2 available"></a></h3><p>This is the 28th release of Apache BookKeeper ! |
| See <a href="/release-notes#4142">BookKeeper 4.14.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="31-may-2021-release-4141-available">31 May, 2021 Release 4.14.1 available<a href="#31-may-2021-release-4141-available" class="hash-link" aria-label="Direct link to 31 May, 2021 Release 4.14.1 available" title="Direct link to 31 May, 2021 Release 4.14.1 available"></a></h3><p>This is the 27th release of Apache BookKeeper ! |
| See <a href="/release-notes#4141">BookKeeper 4.14.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="25-may-2021-release-4140-available">25 May, 2021 Release 4.14.0 available<a href="#25-may-2021-release-4140-available" class="hash-link" aria-label="Direct link to 25 May, 2021 Release 4.14.0 available" title="Direct link to 25 May, 2021 Release 4.14.0 available"></a></h3><p>This is the 26th release of Apache BookKeeper ! |
| See <a href="/release-notes#4140">BookKeeper 4.14.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="25-february-2021-release-4130-available">25 February, 2021 Release 4.13.0 available<a href="#25-february-2021-release-4130-available" class="hash-link" aria-label="Direct link to 25 February, 2021 Release 4.13.0 available" title="Direct link to 25 February, 2021 Release 4.13.0 available"></a></h3><p>This is the 25th release of Apache BookKeeper ! |
| See <a href="/release-notes#4130">BookKeeper 4.13.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="11-january-2021-release-4121-available">11 January, 2021 Release 4.12.1 available<a href="#11-january-2021-release-4121-available" class="hash-link" aria-label="Direct link to 11 January, 2021 Release 4.12.1 available" title="Direct link to 11 January, 2021 Release 4.12.1 available"></a></h3><p>This is the 24th release of Apache BookKeeper !</p><p>See <a href="/release-notes#4121">BookKeeper 4.12.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="11-november-2020-release-4120-available">11 November, 2020 Release 4.12.0 available<a href="#11-november-2020-release-4120-available" class="hash-link" aria-label="Direct link to 11 November, 2020 Release 4.12.0 available" title="Direct link to 11 November, 2020 Release 4.12.0 available"></a></h3><p>This is the 23th release of Apache BookKeeper !</p><p>See <a href="/release-notes#4120">BookKeeper 4.12.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="20-october-2020-release-4111-available">20 October, 2020 Release 4.11.1 available<a href="#20-october-2020-release-4111-available" class="hash-link" aria-label="Direct link to 20 October, 2020 Release 4.11.1 available" title="Direct link to 20 October, 2020 Release 4.11.1 available"></a></h3><p>This is the 22th release of Apache BookKeeper !</p><p>See <a href="/release-notes#4111">BookKeeper 4.11.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="10-july-2020--release-4110-available">10 July, 2020 Release 4.11.0 available<a href="#10-july-2020--release-4110-available" class="hash-link" aria-label="Direct link to 10 July, 2020 Release 4.11.0 available" title="Direct link to 10 July, 2020 Release 4.11.0 available"></a></h3><p>This is the 21th release of Apache BookKeeper !</p><p>See <a href="/release-notes#4110">BookKeeper 4.11.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="6-november-2019-release-4100-available">6 November, 2019 Release 4.10.0 available<a href="#6-november-2019-release-4100-available" class="hash-link" aria-label="Direct link to 6 November, 2019 Release 4.10.0 available" title="Direct link to 6 November, 2019 Release 4.10.0 available"></a></h3><p>This is the 20th release of Apache BookKeeper!</p><p>The 4.10.0 release incorporates hundreds of bug fixes, improvements, and features since previous major release, 4.9.0.</p><p>See <a href="/release-notes#4100">BookKeeper 4.10.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="16-may-2019-release-492-available">16 May, 2019 Release 4.9.2 available<a href="#16-may-2019-release-492-available" class="hash-link" aria-label="Direct link to 16 May, 2019 Release 4.9.2 available" title="Direct link to 16 May, 2019 Release 4.9.2 available"></a></h3><p>This is the 19th release of Apache BookKeeper !</p><p>The 4.9.2 release is a bugfix release which fixes a couple of issues reported from users of 4.9.1.</p><p>See <a href="/release-notes#492">BookKeeper 4.9.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="7-april-2019-release-491-available">7 April, 2019 Release 4.9.1 available<a href="#7-april-2019-release-491-available" class="hash-link" aria-label="Direct link to 7 April, 2019 Release 4.9.1 available" title="Direct link to 7 April, 2019 Release 4.9.1 available"></a></h3><p>This is the 18th release of Apache BookKeeper !</p><p>The 4.9.1 release is a bugfix release which fixes a couple of issues reported from users of 4.9.0.</p><p>See <a href="/release-notes#491">BookKeeper 4.9.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="19-march-2019-release-482-available">19 March, 2019 Release 4.8.2 available<a href="#19-march-2019-release-482-available" class="hash-link" aria-label="Direct link to 19 March, 2019 Release 4.8.2 available" title="Direct link to 19 March, 2019 Release 4.8.2 available"></a></h3><p>This is the 17th release of Apache BookKeeper!</p><p>The 4.8.2 release is a bugfix release which fixes a couple of issues reported from users of 4.8.1.</p><p>See <a href="/release-notes#482">BookKeeper 4.8.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="31-january-2019-release-490-available">31 January, 2019 Release 4.9.0 available<a href="#31-january-2019-release-490-available" class="hash-link" aria-label="Direct link to 31 January, 2019 Release 4.9.0 available" title="Direct link to 31 January, 2019 Release 4.9.0 available"></a></h3><p>This is the 16th release of Apache BookKeeper!</p><p>The 4.9.0 release incorporates hundreds of bug fixes, improvements, and features since previous major release, 4.8.0, |
| which was released four months ago. It is a new milestone in Apache BookKeeper community.</p><p>See <a href="/release-notes#490">BookKeeper 4.9.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="04-december-2018-release-473-available">04 December, 2018 Release 4.7.3 available<a href="#04-december-2018-release-473-available" class="hash-link" aria-label="Direct link to 04 December, 2018 Release 4.7.3 available" title="Direct link to 04 December, 2018 Release 4.7.3 available"></a></h3><p>This is the 15th release of Apache BookKeeper!</p><p>The 4.7.3 release is a bugfix release which fixes a bunch of issues reported from users of 4.7.2.</p><p>See <a href="/release-notes#473">BookKeeper 4.7.3 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="22-november-2018-release-481-available">22 November, 2018 Release 4.8.1 available<a href="#22-november-2018-release-481-available" class="hash-link" aria-label="Direct link to 22 November, 2018 Release 4.8.1 available" title="Direct link to 22 November, 2018 Release 4.8.1 available"></a></h3><p>This is the 14th release of Apache BookKeeper !</p><p>The 4.8.1 release is a bugfix release which fixes a bunch of issues reported from users of 4.8.0.</p><p>See <a href="/release-notes#481">BookKeeper 4.8.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="26-september-2018-release-480-available">26 September, 2018 Release 4.8.0 available<a href="#26-september-2018-release-480-available" class="hash-link" aria-label="Direct link to 26 September, 2018 Release 4.8.0 available" title="Direct link to 26 September, 2018 Release 4.8.0 available"></a></h3><p>This is the 13th release of Apache BookKeeper !</p><p>The 4.8.0 release incorporates hundreds of bug fixes, improvements, and features since previous major release, 4.7.0. |
| It is a new big milestone in Apache BookKeeper community, this release include great new features, like Relaxed Durability, Stream Storage service and Multiple Active Entrylogs.</p><p>See <a href="/release-notes#480">BookKeeper 4.8.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="29-august-2018-release-472-available">29 August, 2018: Release 4.7.2 available<a href="#29-august-2018-release-472-available" class="hash-link" aria-label="Direct link to 29 August, 2018: Release 4.7.2 available" title="Direct link to 29 August, 2018: Release 4.7.2 available"></a></h3><p>This is the 12th release of Apache BookKeeper!</p><p>The 4.7.2 release is a bugfix release which fixes a bunch of issues reported from users of 4.7.1. These fixes include |
| bug fixes around DbLedgerStorage, failure handling around ensemble changes, bookie shutdown and such.</p><p>See <a href="/release-notes#472">BookKeeper 4.7.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="19-june-2018-release-471-available">19 June, 2018: Release 4.7.1 available<a href="#19-june-2018-release-471-available" class="hash-link" aria-label="Direct link to 19 June, 2018: Release 4.7.1 available" title="Direct link to 19 June, 2018: Release 4.7.1 available"></a></h3><p>This is the 11th release of Apache BookKeeper!</p><p>The 4.7.1 release is a bugfix release which fixes a bunch of issues reported from users of 4.7.0. These fixes include |
| bug fixes around ledger cache and object pooling, performance enhancement avoiding memory copies and such.</p><p>See <a href="/release-notes#471">BookKeeper 4.7.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="17-april-2018-release-470-available">17 April, 2018: Release 4.7.0 available<a href="#17-april-2018-release-470-available" class="hash-link" aria-label="Direct link to 17 April, 2018: Release 4.7.0 available" title="Direct link to 17 April, 2018: Release 4.7.0 available"></a></h3><p>This is the 10th release of Apache BookKeeper!</p><p>The 4.7.0 release incorporates hundreds of bug fixes, improvements, and features since previous major release, 4.6.0, |
| which was released four months ago. It is a big milestone in Apache BookKeeper community - Yahoo branch is fully merged |
| back to upstream, and Apache Pulsar (incubating) starts using official BookKeeper release for its upcoming 2.0 release.</p><p>It is also the first release of Apache DistributedLog after it is merged as sub modules of Apache BookKeeper.</p><p>See <a href="/release-notes#470">BookKeeper 4.7.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="9-april-2018-release-462-available">9 April, 2018: Release 4.6.2 available<a href="#9-april-2018-release-462-available" class="hash-link" aria-label="Direct link to 9 April, 2018: Release 4.6.2 available" title="Direct link to 9 April, 2018: Release 4.6.2 available"></a></h3><p>This is the ninth release of BookKeeper as an Apache Top Level Project!</p><p>The 4.6.2 release is a bugfix release.</p><p>See <a href="/release-notes#462">BookKeeper 4.6.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="30-january-2018-release-461-available">30 January, 2018: Release 4.6.1 available<a href="#30-january-2018-release-461-available" class="hash-link" aria-label="Direct link to 30 January, 2018: Release 4.6.1 available" title="Direct link to 30 January, 2018: Release 4.6.1 available"></a></h3><p>This is the eighth release of BookKeeper as an Apache Top Level Project!</p><p>The 4.6.1 release is a bugfix release.</p><p>See <a href="/release-notes#461">BookKeeper 4.6.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="27-december-2017-release-460-available">27 December, 2017: Release 4.6.0 available<a href="#27-december-2017-release-460-available" class="hash-link" aria-label="Direct link to 27 December, 2017: Release 4.6.0 available" title="Direct link to 27 December, 2017: Release 4.6.0 available"></a></h3><p>This is the seventh release of BookKeeper as an Apache Top Level Project!</p><p>The 4.6.0 release incorporates new fixes, improvements, and features since previous major release 4.5.0.</p><p>See <a href="/release-notes#460">BookKeeper 4.6.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="22-november-2017-release-451-available">22 November, 2017: Release 4.5.1 available<a href="#22-november-2017-release-451-available" class="hash-link" aria-label="Direct link to 22 November, 2017: Release 4.5.1 available" title="Direct link to 22 November, 2017: Release 4.5.1 available"></a></h3><p>This is the sixth release of BookKeeper as an Apache Top Level Project!</p><p>The 4.5.1 release is a bugfix release.</p><p>See <a href="/release-notes#451">BookKeeper 4.5.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="10-august-2017-release-450-available">10 August, 2017: Release 4.5.0 available<a href="#10-august-2017-release-450-available" class="hash-link" aria-label="Direct link to 10 August, 2017: Release 4.5.0 available" title="Direct link to 10 August, 2017: Release 4.5.0 available"></a></h3><p>This is the fifth release of BookKeeper as an Apache Top Level Project!</p><p>The 4.5.0 release incorporates hundreds of new fixes, improvements, and features since previous major release, 4.4.0, |
| which was released over a year ago. It is a big milestone in Apache BookKeeper community, converging from three |
| main branches (Salesforce, Twitter and Yahoo).</p><p>See <a href="/release-notes#450">BookKeeper 4.5.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="16-may-2016-release-440-available">16 May, 2016: release 4.4.0 available<a href="#16-may-2016-release-440-available" class="hash-link" aria-label="Direct link to 16 May, 2016: release 4.4.0 available" title="Direct link to 16 May, 2016: release 4.4.0 available"></a></h3><p>This is the fourth release of BookKeeper as an Apache Top Level Project!</p><p>This release contains a total of 94 Jira tickets fixed and brings several bookie |
| reliability and operability improvements, along with a long list of bugfixes.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.4.0/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.4.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="30-nov-2015-release-432-available">30 Nov, 2015: release 4.3.2 available<a href="#30-nov-2015-release-432-available" class="hash-link" aria-label="Direct link to 30 Nov, 2015: release 4.3.2 available" title="Direct link to 30 Nov, 2015: release 4.3.2 available"></a></h3><p>This is the third release of BookKeeper as an Apache Top Level Project!</p><p>This release fixes some issues in both bookie server and bookkeeper client.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.3.2/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.3.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="27-may-2015-release-431-available">27 May, 2015: release 4.3.1 available<a href="#27-may-2015-release-431-available" class="hash-link" aria-label="Direct link to 27 May, 2015: release 4.3.1 available" title="Direct link to 27 May, 2015: release 4.3.1 available"></a></h3><p>This is the second release of BookKeeper as an Apache Top Level Project!</p><p>This release fixes some issues in both bookie server and bookkeeper client.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.3.1/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.3.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="16-jan-2015-release-424-available">16 Jan, 2015: release 4.2.4 available<a href="#16-jan-2015-release-424-available" class="hash-link" aria-label="Direct link to 16 Jan, 2015: release 4.2.4 available" title="Direct link to 16 Jan, 2015: release 4.2.4 available"></a></h3><p>This is the first release of BookKeeper as an Apache Top Level Project!</p><p>This release fixes some critical issues in fencing when the ack quorum and write quorum are different sizes.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.2.4/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.2.4 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="14-oct-2014-release-430-available">14 Oct, 2014: release 4.3.0 available<a href="#14-oct-2014-release-430-available" class="hash-link" aria-label="Direct link to 14 Oct, 2014: release 4.3.0 available" title="Direct link to 14 Oct, 2014: release 4.3.0 available"></a></h3><p>This is the seventh release of BookKeeper as a subproject of Zookeeper.</p><p>This release includes a lot of improvements to the bookie on-disk performance, a new statistics framework, and protobuffer protocol support along with numerous bugfixes.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.3.0/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.3.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="27-june-2013-release-423-available">27 June, 2013: release 4.2.3 available<a href="#27-june-2013-release-423-available" class="hash-link" aria-label="Direct link to 27 June, 2013: release 4.2.3 available" title="Direct link to 27 June, 2013: release 4.2.3 available"></a></h3><p>This is the sixth release of BookKeeper as a subproject of Zookeeper.</p><p>This is a bugfix release for 4.2.2.</p><p>Notable fixes and improvements include new utilities to give administrators better visibility of cluster state (BOOKKEEPER-746), |
| improvements to allow for smoother rolling upgrades (BOOKKEEPER-745), |
| fixes to ledger polling to ensure metadata updates aren't missed (BOOKKEEPER-710 & BOOKKEEPER-747) and shading of protobuf libraries |
| to avoid conflicts when included with other version (BOOKKEEPER-708).</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.2.3/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.2.3 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="9-oct-2013-release-422-available">9 Oct, 2013: release 4.2.2 available<a href="#9-oct-2013-release-422-available" class="hash-link" aria-label="Direct link to 9 Oct, 2013: release 4.2.2 available" title="Direct link to 9 Oct, 2013: release 4.2.2 available"></a></h3><p>This is the fifth release of BookKeeper as a subproject of Zookeeper.</p><p>This is a bugfix release for 4.2.1. There are some minor API improvements. Notably, it is now possible to check whether a ledger is closed without opening it, and it is now possible to get a list of ledgers available in the cluster.</p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.2.2/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.2.2 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="27-feb-2013-release-421-available">27 Feb, 2013: release 4.2.1 available<a href="#27-feb-2013-release-421-available" class="hash-link" aria-label="Direct link to 27 Feb, 2013: release 4.2.1 available" title="Direct link to 27 Feb, 2013: release 4.2.1 available"></a></h3><p>This is the fourth release of BookKeeper as a subproject of Zookeeper. |
| <em>This release fixes a major performance bug in release 4.2.0. All users of BookKeeper 4.2.0 should upgrade immediately.</em></p><p>See <a href="https://bookkeeper.apache.org//archives/docs/r4.2.1/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.2.1 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="18-jan-2013-release-420-available">18 Jan, 2013: release 4.2.0 available<a href="#18-jan-2013-release-420-available" class="hash-link" aria-label="Direct link to 18 Jan, 2013: release 4.2.0 available" title="Direct link to 18 Jan, 2013: release 4.2.0 available"></a></h3><p>This is the third release of BookKeeper as a subproject of Zookeeper. |
| See <a href="https://bookkeeper.apache.org//archives/docs/r4.2.0/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.2.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="12-jun-2012-release-410-available">12 Jun, 2012: release 4.1.0 available<a href="#12-jun-2012-release-410-available" class="hash-link" aria-label="Direct link to 12 Jun, 2012: release 4.1.0 available" title="Direct link to 12 Jun, 2012: release 4.1.0 available"></a></h3><p>This is the second release of BookKeeper as a subproject of Zookeeper. |
| See <a href="https://bookkeeper.apache.org//archives/docs/r4.1.0/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.1.0 Release Notes</a> for details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="7-dec-2011-release-400-available">7 Dec, 2011: release 4.0.0 available<a href="#7-dec-2011-release-400-available" class="hash-link" aria-label="Direct link to 7 Dec, 2011: release 4.0.0 available" title="Direct link to 7 Dec, 2011: release 4.0.0 available"></a></h3><p>This is the first release of BookKeeper as a subproject of Zookeeper. |
| See <a href="https://bookkeeper.apache.org//archives/docs/r4.0.0/releaseNotes.html" target="_blank" rel="noopener noreferrer">BookKeeper 4.0.0 Release Notes</a> for details.</p></article></div><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#release-integrity" class="table-of-contents__link toc-highlight">Release Integrity</a></li><li><a href="#getting-started" class="table-of-contents__link toc-highlight">Getting Started</a></li><li><a href="#news" class="table-of-contents__link toc-highlight">News</a><ul><li><a href="#9-may-2022-release-4150-available" class="table-of-contents__link toc-highlight">9 May, 2022 Release 4.15.0 available</a></li><li><a href="#22-december-2021-release-4144-available" class="table-of-contents__link toc-highlight">22 December, 2021 Release 4.14.4 available</a></li><li><a href="#9-november-2021-release-4143-available" class="table-of-contents__link toc-highlight">9 November, 2021 Release 4.14.3 available</a></li><li><a href="#23-august-2021-release-4142-available" class="table-of-contents__link toc-highlight">23 August, 2021 Release 4.14.2 available</a></li><li><a href="#31-may-2021-release-4141-available" class="table-of-contents__link toc-highlight">31 May, 2021 Release 4.14.1 available</a></li><li><a href="#25-may-2021-release-4140-available" class="table-of-contents__link toc-highlight">25 May, 2021 Release 4.14.0 available</a></li><li><a href="#25-february-2021-release-4130-available" class="table-of-contents__link toc-highlight">25 February, 2021 Release 4.13.0 available</a></li><li><a href="#11-january-2021-release-4121-available" class="table-of-contents__link toc-highlight">11 January, 2021 Release 4.12.1 available</a></li><li><a href="#11-november-2020-release-4120-available" class="table-of-contents__link toc-highlight">11 November, 2020 Release 4.12.0 available</a></li><li><a href="#20-october-2020-release-4111-available" class="table-of-contents__link toc-highlight">20 October, 2020 Release 4.11.1 available</a></li><li><a href="#10-july-2020--release-4110-available" class="table-of-contents__link toc-highlight">10 July, 2020 Release 4.11.0 available</a></li><li><a href="#6-november-2019-release-4100-available" class="table-of-contents__link toc-highlight">6 November, 2019 Release 4.10.0 available</a></li><li><a href="#16-may-2019-release-492-available" class="table-of-contents__link toc-highlight">16 May, 2019 Release 4.9.2 available</a></li><li><a href="#7-april-2019-release-491-available" class="table-of-contents__link toc-highlight">7 April, 2019 Release 4.9.1 available</a></li><li><a href="#19-march-2019-release-482-available" class="table-of-contents__link toc-highlight">19 March, 2019 Release 4.8.2 available</a></li><li><a href="#31-january-2019-release-490-available" class="table-of-contents__link toc-highlight">31 January, 2019 Release 4.9.0 available</a></li><li><a href="#04-december-2018-release-473-available" class="table-of-contents__link toc-highlight">04 December, 2018 Release 4.7.3 available</a></li><li><a href="#22-november-2018-release-481-available" class="table-of-contents__link toc-highlight">22 November, 2018 Release 4.8.1 available</a></li><li><a href="#26-september-2018-release-480-available" class="table-of-contents__link toc-highlight">26 September, 2018 Release 4.8.0 available</a></li><li><a href="#29-august-2018-release-472-available" class="table-of-contents__link toc-highlight">29 August, 2018: Release 4.7.2 available</a></li><li><a href="#19-june-2018-release-471-available" class="table-of-contents__link toc-highlight">19 June, 2018: Release 4.7.1 available</a></li><li><a href="#17-april-2018-release-470-available" class="table-of-contents__link toc-highlight">17 April, 2018: Release 4.7.0 available</a></li><li><a href="#9-april-2018-release-462-available" class="table-of-contents__link toc-highlight">9 April, 2018: Release 4.6.2 available</a></li><li><a href="#30-january-2018-release-461-available" class="table-of-contents__link toc-highlight">30 January, 2018: Release 4.6.1 available</a></li><li><a href="#27-december-2017-release-460-available" class="table-of-contents__link toc-highlight">27 December, 2017: Release 4.6.0 available</a></li><li><a href="#22-november-2017-release-451-available" class="table-of-contents__link toc-highlight">22 November, 2017: Release 4.5.1 available</a></li><li><a href="#10-august-2017-release-450-available" class="table-of-contents__link toc-highlight">10 August, 2017: Release 4.5.0 available</a></li><li><a href="#16-may-2016-release-440-available" class="table-of-contents__link toc-highlight">16 May, 2016: release 4.4.0 available</a></li><li><a href="#30-nov-2015-release-432-available" class="table-of-contents__link toc-highlight">30 Nov, 2015: release 4.3.2 available</a></li><li><a href="#27-may-2015-release-431-available" class="table-of-contents__link toc-highlight">27 May, 2015: release 4.3.1 available</a></li><li><a href="#16-jan-2015-release-424-available" class="table-of-contents__link toc-highlight">16 Jan, 2015: release 4.2.4 available</a></li><li><a href="#14-oct-2014-release-430-available" class="table-of-contents__link toc-highlight">14 Oct, 2014: release 4.3.0 available</a></li><li><a href="#27-june-2013-release-423-available" class="table-of-contents__link toc-highlight">27 June, 2013: release 4.2.3 available</a></li><li><a href="#9-oct-2013-release-422-available" class="table-of-contents__link toc-highlight">9 Oct, 2013: release 4.2.2 available</a></li><li><a href="#27-feb-2013-release-421-available" class="table-of-contents__link toc-highlight">27 Feb, 2013: release 4.2.1 available</a></li><li><a href="#18-jan-2013-release-420-available" class="table-of-contents__link toc-highlight">18 Jan, 2013: release 4.2.0 available</a></li><li><a href="#12-jun-2012-release-410-available" class="table-of-contents__link toc-highlight">12 Jun, 2012: release 4.1.0 available</a></li><li><a href="#7-dec-2011-release-400-available" class="table-of-contents__link toc-highlight">7 Dec, 2011: release 4.0.0 available</a></li></ul></li></ul></div></div></div></main></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Documentation</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/docs/overview">Overview</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/getting-started/installation">Getting started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/deployment/manual">Deployment</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/admin/bookies">Administration</a></li><li class="footer__item"><a class="footer__link-item" 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