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aria-label="Introduction"><!--[--><!--]--> Introduction <!--[--><!--]--></a><!----></li><li><a href="/en/doc/quick-start.html" class="sidebar-item" aria-label="Quick Start"><!--[--><!--]--> Quick Start <!--[--><!--]--></a><!----></li><li><a href="/en/doc/install-detail.html" class="sidebar-item" aria-label="Install Arthas"><!--[--><!--]--> Install Arthas <!--[--><!--]--></a><!----></li><li><a href="/en/doc/download.html" class="sidebar-item" aria-label="Download"><!--[--><!--]--> Download <!--[--><!--]--></a><!----></li><li><a href="/en/doc/advanced-use.html" class="sidebar-item" aria-label="Advanced Usage"><!--[--><!--]--> Advanced Usage <!--[--><!--]--></a><!----></li><li><p tabindex="0" class="sidebar-item collapsible">Other features <span class="right arrow"></span></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a href="/en/doc/async.html" class="sidebar-item" aria-label="Arthas Async Jobs"><!--[--><!--]--> Arthas Async Jobs <!--[--><!--]--></a><!----></li><li><a href="/en/doc/save-log.html" class="sidebar-item" aria-label="Log command outputs"><!--[--><!--]--> Log command outputs <!--[--><!--]--></a><!----></li><li><a href="/en/doc/batch-support.html" class="sidebar-item" aria-label="Batch Processing"><!--[--><!--]--> Batch Processing <!--[--><!--]--></a><!----></li><li><p tabindex="0" class="sidebar-item">How to use ognl <!----></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues/11" rel="noopener noreferrer" target="_blank" aria-label="Basic ognl example"><!--[--><!--]--><span>Basic ognl example</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" 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Starter"><!--[--><!--]--> Arthas Spring Boot Starter <!--[--><!--]--></a><!----></li><li><a href="/en/doc/idea-plugin.html" class="sidebar-item" aria-label="IDEA Plugin"><!--[--><!--]--> IDEA Plugin <!--[--><!--]--></a><!----></li><li><a href="/en/doc/faq.html" class="sidebar-item" aria-label="FAQ"><!--[--><!--]--> FAQ <!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case" rel="noopener noreferrer" target="_blank" aria-label="User cases"><!--[--><!--]--><span>User cases</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="Start me at github"><!--[--><!--]--><span>Start me at github</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" 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Notes</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a href="/en/doc/contact-us.md" class="sidebar-item" aria-label="Contact us"><!--[--><!--]--> Contact us <!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul><!--[--><!--]--></aside><!--]--><!--[--><main class="page" data-v-e0e60120><!--[--><!--]--><div class="right-menu-padding theme-default-content" data-v-e0e60120><!--[--><!--]--><div class="right-menu-wrapper" data-v-e0e60120><div class="right-menu-margin"><div class="right-menu-title">Table of Contents</div><div class="right-menu-content"><!--[--><!--]--></div></div></div><div data-v-e0e60120><h1 id="release-notes" tabindex="-1"><a class="header-anchor" href="#release-notes" aria-hidden="true">#</a> Release Notes</h1><h2 id="v3-1-1" tabindex="-1"><a class="header-anchor" href="#v3-1-1" aria-hidden="true">#</a> v3.1.1</h2><ul><li><a href="https://github.com/alibaba/arthas/releases/tag/arthas-all-3.1.1" target="_blank" rel="noopener noreferrer">https://github.com/alibaba/arthas/releases/tag/arthas-all-3.1.1<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul><h2 id="v3-1-0" tabindex="-1"><a class="header-anchor" href="#v3-1-0" aria-hidden="true">#</a> v3.1.0</h2><ul><li><a href="https://github.com/alibaba/arthas/releases/tag/3.1.0" target="_blank" rel="noopener noreferrer">https://github.com/alibaba/arthas/releases/tag/3.1.0<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul><h2 id="v3-0-5" tabindex="-1"><a class="header-anchor" href="#v3-0-5" aria-hidden="true">#</a> v3.0.5</h2><ul><li><a href="https://github.com/alibaba/arthas/releases/tag/arthas-all-3.0.5" target="_blank" rel="noopener noreferrer">https://github.com/alibaba/arthas/releases/tag/arthas-all-3.0.5<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul><h2 id="v3-0-4" tabindex="-1"><a class="header-anchor" href="#v3-0-4" aria-hidden="true">#</a> v3.0.4</h2><ul><li><a href="https://github.com/alibaba/arthas/releases/tag/arthas-all-3.0.4" target="_blank" rel="noopener noreferrer">https://github.com/alibaba/arthas/releases/tag/arthas-all-3.0.4<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul><h2 id="v2017-11-03" tabindex="-1"><a class="header-anchor" href="#v2017-11-03" aria-hidden="true">#</a> v2017-11-03</h2><ul><li>[improvement] add <a href="/en/doc/getstatic.html" class=""><code>getstatic</code></a></li><li>[bug] fix Arthas class loader logs loading issues</li><li>[improvement] introduce <a href="https://en.wikipedia.org/wiki/OGNL" target="_blank" rel="noopener noreferrer">OGNL<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> to customize <code>classloader</code> to invoke static methods</li><li>[improvement] optimise <code>termd</code> uppercase output performance</li><li>[improvement] <code>classloader</code> compile in class loader category by default</li><li>[bug] fix <code>wc</code> counting issue</li><li>[improvement] disable certain JDK classes e.g. <code>Classloader</code>, <code>Method</code>, <code>Integer</code> and the lik</li><li>[improvement] quit directly when encountering incorrect <a href="https://en.wikipedia.org/wiki/OGNL" target="_blank" rel="noopener noreferrer">OGNL<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> expression</li><li>[bug] fix <code>pipe</code> issues</li><li>[improvement] optimize command re-direct features using asynchronous log</li><li>[improvement] <a href="/en/doc/trace.html" class=""><code>trace</code></a> can filter JDK method calls</li></ul><h2 id="v2017-09-22" tabindex="-1"><a class="header-anchor" href="#v2017-09-22" aria-hidden="true">#</a> v2017-09-22</h2><ul><li>[improvement] improve the error message when starting agent and server fails</li><li>[bug] fix some asynchronous issues</li></ul><h2 id="v2017-09-11" tabindex="-1"><a class="header-anchor" href="#v2017-09-11" aria-hidden="true">#</a> v2017-09-11</h2><ul><li>[improvement] <a href="/en/doc/async.html" class=""><code>async</code></a> supported</li><li>[improvement] optimize <a href="/en/doc/jad.html" class=""><code>jad</code></a> support JDK 8 and inner class</li><li>[bug] fix Chinese encoding issues</li></ul><h2 id="v2017-05-11" tabindex="-1"><a class="header-anchor" href="#v2017-05-11" aria-hidden="true">#</a> v2017-05-11</h2><ul><li>[improvement] <a href="/en/doc/tt.html" class=""><code>tt</code></a> investigating/recording level one to avoid too much performance overhead</li><li>[bug] fix Chinese characters can not be presented issue</li></ul><h2 id="v2017-05-12" tabindex="-1"><a class="header-anchor" href="#v2017-05-12" aria-hidden="true">#</a> v2017-05-12</h2><ul><li>Arthas 3.0 release 🎊</li></ul><h2 id="v2016-12-09" tabindex="-1"><a class="header-anchor" href="#v2016-12-09" aria-hidden="true">#</a> v2016-12-09</h2><ul><li>[feature] <a href="https://github.com/alibaba/arthas/blob/master/bin/as.sh" target="_blank" rel="noopener noreferrer"><code>as.sh</code><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> support <code>-h</code> to print help info</li><li>[bug] [#121] fix leftover temp files causing Arthas cannot start issue</li><li>[bug] [#123] fix <code>attach/shutdown</code> repeatedly causing Arthas classloader leakage issue</li><li>[improvement] make the help info more readable</li><li>[bug] [#126] fix the documents links issues</li><li>[bug] [#122] fix the <a href="/en/doc/classloader.html" class=""><code>classloader</code></a> filtering out <code>sun.reflect.DelegatingClassLoader</code> issue</li><li>[bug] [#129] fix <a href="/en/doc/classloader.html" class=""><code>classloader</code></a> presenting structure issues</li><li>[improvement] [#125] make the Arthas log output more readable</li><li>[improvement] [#96] <a href="/en/doc/sc.html" class=""><code>sc</code></a> and more commands are supporting format as <code>com/taobao/xxx/TestClass</code></li><li>[bug] [#124] fix the negative values of <a href="/en/doc/trace.html" class=""><code>trace</code></a></li><li>[improvement] [#128] the output of <a href="/en/doc/tt.html" class=""><code>tt</code></a> will auto-expand now</li><li>[bug] [#130] providing more meaningful error messages when port conflicts</li><li>[bug] [#98] fix Arthas starting issue: when updating/downloading failed, Arthas will fail to start</li><li>[bug] [#139] fix agent attaching fails under some scenarios issues</li><li>[improvement] [#156] delay <code>jd-core-java</code> initialization to avoid Arthas starting failure</li><li>[bug] avoid thread names duplicate issue</li><li>[improvement] [#150] filtering by total time cost in <a href="/en/doc/trace.html" class=""><code>trace</code></a></li><li>[bug] fix <a href="/en/doc/sc.html" class=""><code>sc</code></a> <code>NPE</code> issue when searching <code>SystemClassloader</code></li><li>[bug] [#180] fix attach fails issues: attaching succeed at the first time, delete the Arthas installer, re-compile and package => attaching fails</li></ul><h2 id="v2016-06-07" tabindex="-1"><a class="header-anchor" href="#v2016-06-07" aria-hidden="true">#</a> v2016-06-07</h2><ul><li>[bug] fix NPE when loading <code>spy</code> as resource</li><li>[improvement] locating the blocking thread</li><li>[improvement] print out thread in name order</li><li>[improvement] specify the refreshing interval when checking topN busiest threads</li></ul><h2 id="v2016-04-08" tabindex="-1"><a class="header-anchor" href="#v2016-04-08" aria-hidden="true">#</a> v2016-04-08</h2><ul><li>[feature] specify refreshing interval and execution times in <a href="/en/doc/dashboard.html" class=""><code>dashboard</code></a></li><li>[feature] log the command execution result</li><li>[feature] speed up the booting and attaching while the first attaching is even quicker by 100% than before</li><li>[feature] batch supported; script supported</li><li>[feature] interactive mode used in Arthas</li><li>[feature] inheritance relation included in class searching; global option <code>disable-sub-class</code> can be used to turn it off</li><li>[feature] colorful and plain text modes both supported</li><li>[improvement] merge <code>exit</code> and <code>quit</code> commands</li><li>[improvement] help info enclosed with wiki links</li><li>[improvement] optimize <a href="/en/doc/watch.html" class=""><code>watch</code></a> using flow for better UX</li><li>[improvement] add examples to <a href="/en/doc/thread.html" class=""><code>thread</code></a></li><li>[improvement] auto-completion ignores character case</li><li>[improvement] make the UI more beautiful/friendly</li><li>[bug] fix <a href="/en/doc/trace.html" class=""><code>trace</code></a> printing too much encountering loop issues</li><li>[bug] fix <a href="/en/doc/trace.html" class=""><code>trace</code></a> node twisting issues when method throwing exceptions</li><li>[bug] fix injected/enhanced <code>BootstrapClassLoader</code> cannot locate <code>spy</code> issues</li></ul><h2 id="v2016-03-07" tabindex="-1"><a class="header-anchor" href="#v2016-03-07" aria-hidden="true">#</a> v2016-03-07</h2><ul><li>[feature] checking the topN thread and related stack traces</li><li>[bug] fix Arthas starting failure in OpenJdk issues (requiring to reinstall <a href="https://github.com/alibaba/arthas/blob/master/bin/as.sh" target="_blank" rel="noopener noreferrer">as.sh<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>)</li><li>[improvement] optimize UX</li></ul><h2 id="v2016-01-18" tabindex="-1"><a class="header-anchor" href="#v2016-01-18" aria-hidden="true">#</a> v2016-01-18</h2><ul><li>[improvement] optimise <a href="/en/doc/jad.html" class=""><code>jad</code></a>; dump memory byte array in real time; using <code>jd-core-java</code> to decompile; line number presented;</li><li>[bug] fix checking/re-producing issues when <a href="/en/doc/tt.html" class=""><code>tt</code></a> is watching thread-context related methods invoking</li></ul><h2 id="v2016-01-08" tabindex="-1"><a class="header-anchor" href="#v2016-01-08" aria-hidden="true">#</a> v2016-01-08</h2><ul><li>[bug] jad NPE</li><li>[bug] watch/monitor NPE</li><li>[bug] wrong escaping issues</li><li>[bug] wrong statistics</li><li>[bug] <a href="/en/doc/sc.html" class=""><code>sc</code></a> checking internal structure issues</li></ul><h2 id="v2015-12-29" tabindex="-1"><a class="header-anchor" href="#v2015-12-29" aria-hidden="true">#</a> v2015-12-29</h2><ul><li>Arthas 2.0 Beta 💥！</li></ul></div><!--[--><!--]--></div><footer 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