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href="/zh/release-notes/2024/01/30/5.2.0">Release Notes - Apache RocketMQ - Version 5.2.0</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/zh/release-notes/2024/01/29/4.9.8">Release Notes - Apache RocketMQ - Version 4.9.8</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/zh/release-notes/2023/09/22/5.1.4">Release Notes - Apache RocketMQ - Version 5.1.4</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/zh/release-notes/2023/06/24/5.1.3">Release Notes - Apache RocketMQ - Version 5.1.3</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><meta itemprop="description" content="- Source: rocketmq-all-4.9.4-source-release.zip [PGP] [SHA512]"><header><h1 class="title_f1Hy" itemprop="headline">Release Notes - Apache RocketMQ - Version 4.9.4</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-03-04T00:00:00.000Z" itemprop="datePublished">2022年3月4日</time> · <!-- -->阅读需 5 分钟</div></header><div id="__blog-post-container" class="markdown" itemprop="articleBody"><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>Download the 4.9.4 release</div><div class="admonitionContent_S0QG"><ul><li>Source: <a href="https://archive.apache.org/dist/rocketmq/4.9.4/rocketmq-all-4.9.4-source-release.zip" target="_blank" rel="noopener noreferrer">rocketmq-all-4.9.4-source-release.zip</a> [<a href="https://archive.apache.org/dist/rocketmq/4.9.4/rocketmq-all-4.9.4-source-release.zip.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/4.9.4/rocketmq-all-4.9.4-source-release.zip.sha512" target="_blank" rel="noopener noreferrer">SHA512</a>]</li><li>Binary: <a href="https://archive.apache.org/dyn/closer.cgi?path=rocketmq/4.9.4/rocketmq-all-4.9.4-bin-release.zip" target="_blank" rel="noopener noreferrer">rocketmq-all-4.9.4-bin-release.zip</a> [<a href="https://archive.apache.org/dist/rocketmq/4.9.4/rocketmq-all-4.9.4-bin-release.zip.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/4.9.4/rocketmq-all-4.9.4-bin-release.zip.sha512" target="_blank" rel="noopener noreferrer">SHA512</a>]</li></ul></div></div><p>Below is a summary of the issues addressed in the 4.9.4 release of RocketMQ. For full documentation of the release, a guide to get started, please refer to <a href="/zh/docs/quickStart/01quickstart/">Quick Start</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="improvement">Improvement<a href="#improvement" class="hash-link" aria-label="Improvement的直接链接" title="Improvement的直接链接"></a></h2><ul><li>[<a href="https://github.com/apache/rocketmq/issues/4426" target="_blank" rel="noopener noreferrer">ISSUE-4426</a>] - fix ACL issue when sending messages back</li><li>[<a href="https://github.com/apache/rocketmq/issues/4455" target="_blank" rel="noopener noreferrer">ISSUE-4455</a>] - add a schedule task to update namesrv address</li><li>[<a href="https://github.com/apache/rocketmq/issues/4349" target="_blank" rel="noopener noreferrer">ISSUE-4349</a>] - fix negative index when index reach Integer.MAX_VALUE</li><li>[<a href="https://github.com/apache/rocketmq/issues/3906" target="_blank" rel="noopener noreferrer">ISSUE-3906</a>] - Mark stream-related request by RequestType</li><li>[<a href="https://github.com/apache/rocketmq/issues/4419" target="_blank" rel="noopener noreferrer">ISSUE-4419</a>] - Upgrade maven-checkstyle-plugin to 3.1.2</li><li>[<a href="https://github.com/apache/rocketmq/issues/4416" target="_blank" rel="noopener noreferrer">ISSUE-4416</a>] - Update dledger version to 0.2.6</li><li>[<a href="https://github.com/apache/rocketmq/issues/4410" target="_blank" rel="noopener noreferrer">ISSUE-4410</a>] - Optimize method org.apache.rocketmq.common.message.MessageDecoder#messageProperties2String, remove useless check</li><li>[<a href="https://github.com/apache/rocketmq/issues/4391" target="_blank" rel="noopener noreferrer">ISSUE-4391</a>] - optimize for printObjectProperties</li><li>[<a href="https://github.com/apache/rocketmq/issues/4067" target="_blank" rel="noopener noreferrer">ISSUE-4067</a>] - fix: Add TLS configuration documents.</li><li>[<a href="https://github.com/apache/rocketmq/issues/4377" target="_blank" rel="noopener noreferrer">ISSUE-4377</a>] - Unnecessary null check before method call</li><li>[<a href="https://github.com/apache/rocketmq/issues/4372" target="_blank" rel="noopener noreferrer">ISSUE-4372</a>] - Make it compile with Java9+</li><li>[<a href="https://github.com/apache/rocketmq/issues/4365" target="_blank" rel="noopener noreferrer">ISSUE-4365</a>] - acl PlainPermissionManager key file paths set to same</li><li>[<a href="https://github.com/apache/rocketmq/issues/4362" target="_blank" rel="noopener noreferrer">ISSUE-4362</a>] - remove redundancy group name check of null in method org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl#checkConfig</li><li>[<a href="https://github.com/apache/rocketmq/issues/4323" target="_blank" rel="noopener noreferrer">ISSUE-4323</a>] - Transaction example add the default NamesrvAddr</li><li>[<a href="https://github.com/apache/rocketmq/issues/4323" target="_blank" rel="noopener noreferrer">ISSUE-4323</a>] - tracemessage example add the default NamesrvAddr</li><li>[<a href="https://github.com/apache/rocketmq/issues/4323" target="_blank" rel="noopener noreferrer">ISSUE-4323</a>] - Schedule example add the default NamesrvAddr</li><li>[<a href="https://github.com/apache/rocketmq/issues/4323" target="_blank" rel="noopener noreferrer">ISSUE-4323</a>] - Optimized namespace example code</li><li>[<a href="https://github.com/apache/rocketmq/issues/4226" target="_blank" rel="noopener noreferrer">ISSUE-4226</a>] - Message length exceeds the maximum length when sendback</li><li>[<a href="https://github.com/apache/rocketmq/issues/4332" target="_blank" rel="noopener noreferrer">ISSUE-4332</a>] - Remove duplicate code</li><li>[<a href="https://github.com/apache/rocketmq/issues/4323" target="_blank" rel="noopener noreferrer">ISSUE-4323</a>] - Quickstart adds the default NamesrvAddr</li><li>[<a href="https://github.com/apache/rocketmq/issues/4320" target="_blank" rel="noopener noreferrer">ISSUE-4320</a>] - Anonymous new PrivilegedAction can be replaced with lambda</li><li>[<a href="https://github.com/apache/rocketmq/issues/4320" target="_blank" rel="noopener noreferrer">ISSUE-4396</a>] - Support get all producer on one broker</li><li>[<a href="https://github.com/apache/rocketmq/issues/4318" target="_blank" rel="noopener noreferrer">ISSUE-4318</a>] - make some variables to be final in IndexHeader</li><li>[<a href="https://github.com/apache/rocketmq/issues/4317" target="_blank" rel="noopener noreferrer">ISSUE-4317</a>] - Fix for statement does not loop</li><li>[<a href="https://github.com/apache/rocketmq/issues/2435" target="_blank" rel="noopener noreferrer">ISSUE-2435</a>] - Solve the problem that DefaultMQProducer#request() sends messages and waits for timeout synchronously</li><li>[<a href="https://github.com/apache/rocketmq/issues/3962" target="_blank" rel="noopener noreferrer">ISSUE-3962</a>] - Fix variable name in MappedFile#isAbleToCommit()</li><li>[<a href="https://github.com/apache/rocketmq/issues/4310" target="_blank" rel="noopener noreferrer">ISSUE-4310</a>] - Optimize serviceProvider's code</li><li>[<a href="https://github.com/apache/rocketmq/issues/4304" target="_blank" rel="noopener noreferrer">ISSUE-4304</a>] - Fix license check failures</li><li>[<a href="https://github.com/apache/rocketmq/issues/4286" target="_blank" rel="noopener noreferrer">ISSUE-4286</a>] - add link of rocketmq-site to readme</li><li>[<a href="https://github.com/apache/rocketmq/issues/4284" target="_blank" rel="noopener noreferrer">ISSUE-4284</a>] - Add protocols to readme and delete the description of language clients</li><li>[<a href="https://github.com/apache/rocketmq/issues/4270" target="_blank" rel="noopener noreferrer">ISSUE-4270</a>] - Log parameter error and optimize code</li><li>[<a href="https://github.com/apache/rocketmq/issues/4263" target="_blank" rel="noopener noreferrer">ISSUE-4263</a>] - Delete topic route info based on cluster when delete topic.</li><li>[<a href="https://github.com/apache/rocketmq/issues/4254" target="_blank" rel="noopener noreferrer">ISSUE-4254</a>] - use function computeIfAbsent replace if</li><li>[<a href="https://github.com/apache/rocketmq/issues/4237" target="_blank" rel="noopener noreferrer">ISSUE-4237</a>] - REMOVE unnecessary final modifier</li><li>[<a href="https://github.com/apache/rocketmq/issues/4239" target="_blank" rel="noopener noreferrer">ISSUE-4239</a>] - Use function computeIfAbsent replace if</li><li>[<a href="https://github.com/apache/rocketmq/issues/4216" target="_blank" rel="noopener noreferrer">ISSUE-4216</a>] - fix HmacSHA1 not available when use benchmark</li><li>[<a href="https://github.com/apache/rocketmq/issues/4203" target="_blank" rel="noopener noreferrer">ISSUE-4203</a>] - Support zstd/lz4 compression to improve send/receive performance</li><li>[<a href="https://github.com/apache/rocketmq/issues/4211" target="_blank" rel="noopener noreferrer">ISSUE-4211</a>] - Fix diskMaxUsedSpaceRatio does not take effect in dLedger</li><li>[<a href="https://github.com/apache/rocketmq/issues/4187" target="_blank" rel="noopener noreferrer">ISSUE-4187</a>] - Support async publish in producer benchmark</li><li>[<a href="https://github.com/apache/rocketmq/issues/4308" target="_blank" rel="noopener noreferrer">ISSUE-4308</a>] - Make some variables to be final in brokerController</li><li>[<a href="https://github.com/apache/rocketmq/issues/4251" target="_blank" rel="noopener noreferrer">ISSUE-4251</a>] - Add batch flag</li><li>[<a href="https://github.com/apache/rocketmq/issues/4185" target="_blank" rel="noopener noreferrer">ISSUE-4185</a>] - Explicit type argument can be replaced with </li><li>[<a href="https://github.com/apache/rocketmq/issues/4183" target="_blank" rel="noopener noreferrer">ISSUE-4183</a>] - When the reportSlaveMaxOffset method fails, end the current loop early</li><li>[<a href="https://github.com/apache/rocketmq/issues/4181" target="_blank" rel="noopener noreferrer">ISSUE-4181</a>] - Prevent int overflow in TraceContext</li><li>[<a href="https://github.com/apache/rocketmq/issues/4099" target="_blank" rel="noopener noreferrer">ISSUE-4099</a>] - Optimized the performance of sending traceMessage in AsyncTraceDispatcher</li><li>[<a href="https://github.com/apache/rocketmq/issues/4175" target="_blank" rel="noopener noreferrer">ISSUE-4175</a>] - Prevent update topic on slave</li><li>[<a href="https://github.com/apache/rocketmq/issues/4165" target="_blank" rel="noopener noreferrer">ISSUE-4165</a>] - add new line in sendMsgStatus</li><li>[<a href="https://github.com/apache/rocketmq/issues/4147" target="_blank" rel="noopener noreferrer">ISSUE-4147</a>] - javadoc: Fix the problem described in the warning message prompted by the IDE.</li><li>[<a href="https://github.com/apache/rocketmq/issues/4145" target="_blank" rel="noopener noreferrer">ISSUE-4145</a>] - docs: Add 'at most once' feature in the feature documents.</li><li>[<a href="https://github.com/apache/rocketmq/issues/4130" target="_blank" rel="noopener noreferrer">ISSUE-4130</a>] - Remove the exception which will never be thrown by method from method signature</li><li>[<a href="https://github.com/apache/rocketmq/issues/3914" target="_blank" rel="noopener noreferrer">ISSUE-3914</a>] - Support multi dirs storage in DLedger</li><li>[<a href="https://github.com/apache/rocketmq/issues/4110" target="_blank" rel="noopener noreferrer">ISSUE-4110</a>] - Update dledger version to 0.2.4</li><li>[<a href="https://github.com/apache/rocketmq/issues/4107" target="_blank" rel="noopener noreferrer">ISSUE-4107</a>] - rocketmq-tools should not depend on rocketmq-store</li><li>[<a href="https://github.com/apache/rocketmq/issues/4098" target="_blank" rel="noopener noreferrer">ISSUE-4098</a>] - Optimized the algorithm of trace message send.</li><li>[<a href="https://github.com/apache/rocketmq/issues/4058" target="_blank" rel="noopener noreferrer">ISSUE-4058</a>] - DLedgerCommitLog support LMQ</li><li>[<a href="https://github.com/apache/rocketmq/issues/4048" target="_blank" rel="noopener noreferrer">ISSUE-4048</a>] - Make storePathCommitLog base on storePathRootDir</li><li>[<a href="https://github.com/apache/rocketmq/issues/4033" target="_blank" rel="noopener noreferrer">ISSUE-4033</a>] - fix async deliver msg will resend forever when serivce not avliable</li><li>[<a href="https://github.com/apache/rocketmq/issues/4040" target="_blank" rel="noopener noreferrer">ISSUE-4040</a>] - Unnecessary toString methods deleted</li><li>[<a href="https://github.com/apache/rocketmq/issues/4037" target="_blank" rel="noopener noreferrer">ISSUE-4037</a>] - Add DeleteExpiredCommitLogSubCommand</li><li>[<a href="https://github.com/apache/rocketmq/issues/4035" target="_blank" rel="noopener noreferrer">ISSUE-4035</a>] - rename some commands</li><li>[<a href="https://github.com/apache/rocketmq/issues/4125" target="_blank" rel="noopener noreferrer">ISSUE-4125</a>] - Anonymous new Runnable() can be replaced with lambda</li><li>[<a href="https://github.com/apache/rocketmq/issues/4028" target="_blank" rel="noopener noreferrer">ISSUE-4028</a>] - wrong log output</li><li>[<a href="https://github.com/apache/rocketmq/issues/4025" target="_blank" rel="noopener noreferrer">ISSUE-4025</a>] - acl not work after changed</li><li>[<a href="https://github.com/apache/rocketmq/issues/4151" target="_blank" rel="noopener noreferrer">ISSUE-4151</a>] - Add option p to the updateGlobalWhiteAddr command</li><li>[<a href="https://github.com/apache/rocketmq/issues/4000" target="_blank" rel="noopener noreferrer">ISSUE-4000</a>] - Fix the warn log input in command tools</li><li>[<a href="https://github.com/apache/rocketmq/issues/3985" target="_blank" rel="noopener noreferrer">ISSUE-3985</a>] - Remove shuffle operation before sorting the list of 'FaultItem'.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3964" target="_blank" rel="noopener noreferrer">ISSUE-3964</a>] - Introduce jmh test for RemotingCommand</li><li>[<a href="https://github.com/apache/rocketmq/issues/3950" target="_blank" rel="noopener noreferrer">ISSUE-3950</a>] - Anonymous new Callable() replaced with lambda</li><li>[<a href="https://github.com/apache/rocketmq/issues/3922" target="_blank" rel="noopener noreferrer">ISSUE-3922</a>] - Fix bugs in ACL modification</li><li>[<a href="https://github.com/apache/rocketmq/issues/3911" target="_blank" rel="noopener noreferrer">ISSUE-3911</a>] - Fix ThreadLocalIndexTest does not actually assert the value</li><li>[<a href="https://github.com/apache/rocketmq/issues/3900" target="_blank" rel="noopener noreferrer">ISSUE-3900</a>]] - Fix that wrong dir is created when using mult-dirs storage</li><li>[<a href="https://github.com/apache/rocketmq/issues/3898" target="_blank" rel="noopener noreferrer">ISSUE-3898</a>] - fix the spell in MQClientAPIImpl</li><li>[<a href="https://github.com/apache/rocketmq/issues/3896" target="_blank" rel="noopener noreferrer">ISSUE-3896</a>] - fix log format error</li><li>[<a href="https://github.com/apache/rocketmq/issues/3890" target="_blank" rel="noopener noreferrer">ISSUE-3890</a>] - add 'brokerAddress' param for ConsumerConnectionSubCommand</li><li>[<a href="https://github.com/apache/rocketmq/issues/3882" target="_blank" rel="noopener noreferrer">ISSUE-3882</a>] - Nameserver change modify topicQueueTable in RouteInfoManager</li><li>[<a href="https://github.com/apache/rocketmq/issues/3877" target="_blank" rel="noopener noreferrer">ISSUE-3877</a>] - Remove unnecessary Exception thrown by MQClientAPIImpl#createSubscriptionGroup</li><li>[<a href="https://github.com/apache/rocketmq/issues/3875" target="_blank" rel="noopener noreferrer">ISSUE-3875</a>] - fix unable to delete last acl account.</li><li>[<a href="https://github.com/apache/rocketmq/issues/23" target="_blank" rel="noopener noreferrer">ISSUE-23</a> - solve error Algorithm HmacSHA1 not available when your java_home is not found</li><li>[<a href="https://github.com/apache/rocketmq/issues/2993" target="_blank" rel="noopener noreferrer">ISSUE-2993</a>] - fix testTruncateCQ on Windows by releasing mapped files.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3859" target="_blank" rel="noopener noreferrer">ISSUE-3859</a>] - enhance the cal of latency for putting message</li><li>[<a href="https://github.com/apache/rocketmq/issues/3804" target="_blank" rel="noopener noreferrer">ISSUE-3804</a>] - Commit consumption offset with specific MessageQueue.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3699" target="_blank" rel="noopener noreferrer">ISSUE-3699</a>] - fix unit test</li><li>[<a href="https://github.com/apache/rocketmq/issues/3966" target="_blank" rel="noopener noreferrer">ISSUE-3966</a>] - Fix using wrong offset when deliver in ScheduleService</li><li>[<a href="https://github.com/apache/rocketmq/issues/3942" target="_blank" rel="noopener noreferrer">ISSUE-3942</a>] - If both acl and message trace are enabled and the default topic RMQ_SYS_TRACE_TOPIC is used for message trace, you don't need to add the PUB permission of RMQ_SYS_TRACE_TOPIC topic to the acl config</li><li>[<a href="https://github.com/apache/rocketmq/issues/3894" target="_blank" rel="noopener noreferrer">ISSUE-3894</a>] - Refactor RouteInfoManager unit test</li><li>[<a href="https://github.com/apache/rocketmq/issues/3585" target="_blank" rel="noopener noreferrer">ISSUE-3585</a>] - [Part B] Improve encode/decode performance</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>标签：</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/zh/release-notes/tags/release-notes">Release_Notes</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/zh/release-notes/tags/rocket-mq">RocketMQ</a></li><li class="tag_QGVx"><a class="tag_zVej 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