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rocketmq-all-4.9.3-source-release.zip [PGP] [SHA512]"><header><h1 class="title_f1Hy" itemprop="headline">Release Notes - Apache RocketMQ - Version 4.9.3</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-03-04T00:00:00.000Z" itemprop="datePublished">March 4, 2022</time> · <!-- -->6 min read</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 4.9.3 release</div><div class="admonitionContent_S0QG"><ul><li>Source: <a href="https://archive.apache.org/dist/rocketmq/4.9.3/rocketmq-all-4.9.3-source-release.zip" target="_blank" rel="noopener noreferrer">rocketmq-all-4.9.3-source-release.zip</a> [<a href="https://archive.apache.org/dist/rocketmq/4.9.3/rocketmq-all-4.9.3-source-release.zip.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/4.9.3/rocketmq-all-4.9.3-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/4.9.3/rocketmq-all-4.9.3-bin-release.zip" target="_blank" rel="noopener noreferrer">rocketmq-all-4.9.3-bin-release.zip</a> [<a href="https://archive.apache.org/dist/rocketmq/4.9.3/rocketmq-all-4.9.3-bin-release.zip.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/4.9.3/rocketmq-all-4.9.3-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 4.9.3 release of RocketMQ. For full documentation of the release, a guide to get started, please refer to <a href="/docs/quickStart/01quickstart/">Quick Start</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="feature">Feature<a href="#feature" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading"></a></h2><ul><li>[<a href="https://github.com/apache/rocketmq/pull/1085" target="_blank" rel="noopener noreferrer">RIP-9</a>] - [RIP-9] add DefaultPullConsumer api doc</li><li>[<a href="https://github.com/apache/rocketmq/pull/3694" target="_blank" rel="noopener noreferrer">RIP-28</a>] - [RIP-28] light message queue(LMQ)</li><li>[<a href="https://github.com/apache/rocketmq/issues/2986" target="_blank" rel="noopener noreferrer">ISSUE-2986</a>] - [ISSUE-2986] - Support for multiple ACL files in a fixed directory</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="improvement">Improvement<a href="#improvement" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading"></a></h2><ul><li>[<a href="https://github.com/apache/rocketmq/issues/3585" target="_blank" rel="noopener noreferrer">ISSUE-3585</a>] - [ISSUE-3585] - [Part F] eliminate regex match in topic/group name check</li><li>[<a href="https://github.com/apache/rocketmq/issues/3585" target="_blank" rel="noopener noreferrer">ISSUE-3585</a>] - [ISSUE-3585] - [Part H] Avoid unnecessary StringBuilder resizing on critical path</li><li>[<a href="https://github.com/apache/rocketmq/issues/3585" target="_blank" rel="noopener noreferrer">ISSUE-3585</a>] - [ISSUE-3585] - [Part J] Use MappedByteBuffer instead of FileChannel to …</li><li>[<a href="https://github.com/apache/rocketmq/issues/3223" target="_blank" rel="noopener noreferrer">ISSUE-3223</a>] - [ISSUE-3223] - Optimize startup script to support greater jdk version</li><li>[<a href="https://github.com/apache/rocketmq/issues/3449" target="_blank" rel="noopener noreferrer">ISSUE-3449</a>] - [ISSUE-3449] - Delayed message supports asynchronous delivery</li><li>[<a href="https://github.com/apache/rocketmq/issues/3487" target="_blank" rel="noopener noreferrer">ISSUE-3487</a>] - [ISSUE-3487] - Benchmark supports custom AK/SK</li><li>[<a href="https://github.com/apache/rocketmq/issues/3832" target="_blank" rel="noopener noreferrer">ISSUE-3832</a>] - [ISSUE-3832] - in order to improve the performance by change the variable location of queueId</li><li>[<a href="https://github.com/apache/rocketmq/issues/3827" target="_blank" rel="noopener noreferrer">ISSUE-3827</a>] - [ISSUE-3827] - Improve Performance of transactional message and schedule message</li><li>[<a href="https://github.com/apache/rocketmq/issues/3173" target="_blank" rel="noopener noreferrer">ISSUE-3173</a>] - [ISSUE-3173] - Isolate Broker logs when multiple Broker services are deployed on the same machine.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3825" target="_blank" rel="noopener noreferrer">ISSUE-3825</a>] - [ISSUE-3825] - Use default SO_SNDBUF/SO_RCVBUF/WRITE_BUFFER_WATER_MARK value</li><li>[<a href="https://github.com/apache/rocketmq/issues/3818" target="_blank" rel="noopener noreferrer">ISSUE-3818</a>] - [ISSUE-3818] - update guava to 31.0.1-jre</li><li>[<a href="https://github.com/apache/rocketmq/issues/3812" target="_blank" rel="noopener noreferrer">ISSUE-3812</a>] - [ISSUE-3812] - DefaultMQProducer#sendKernelImpl Line760 tranMsg does not need to check for null when using Boolean.parseBoolean()</li><li>[<a href="https://github.com/apache/rocketmq/pull/3695" target="_blank" rel="noopener noreferrer">PR-3695</a>] - [PR-3695] Remove useless code</li><li>[<a href="https://github.com/apache/rocketmq/pull/3850" target="_blank" rel="noopener noreferrer">PR-3850</a>] - [PR-3850] Re-enable testing on ARM64</li><li>[<a href="https://github.com/apache/rocketmq/pull/3762" target="_blank" rel="noopener noreferrer">PR-3762</a>] - [PR-3762] Avoid new lines in log</li><li>[<a href="https://github.com/apache/rocketmq/pull/3269" target="_blank" rel="noopener noreferrer">PR-3269</a>] - [PR-3269] add defaultRequestProcessor test</li><li>[<a href="https://github.com/apache/rocketmq/issues/3674" target="_blank" rel="noopener noreferrer">PR-3674</a>] - [PR-3674] add tests for computePullFromWhereWithException</li><li>[<a href="https://github.com/apache/rocketmq/issues/3674" target="_blank" rel="noopener noreferrer">ISSUE-3674</a>] - [ISSUE-3674] Add unit test for AllocateMessageQueueAveragelyByCircle</li><li>[<a href="https://github.com/apache/rocketmq/issues/1665" target="_blank" rel="noopener noreferrer">ISSUE-1665</a>] - [ISSUE-1665] - Add more unit test for Validators</li><li>[<a href="https://github.com/apache/rocketmq/issues/3674" target="_blank" rel="noopener noreferrer">ISSUE-3674</a>] - [ISSUE-3674] - add tests for AllocateMessageQueueAveragely</li><li>[<a href="https://github.com/apache/rocketmq/issues/3602" target="_blank" rel="noopener noreferrer">ISSUE-3602</a>] - [ISSUE-3602] - add AdminBrokerProcessor Test</li><li>[<a href="https://github.com/apache/rocketmq/issues/3674" target="_blank" rel="noopener noreferrer">ISSUE-3674</a>] - [ISSUE-3674] - Improve the test cases of the tools module</li><li>[<a href="https://github.com/apache/rocketmq/issues/3724" target="_blank" rel="noopener noreferrer">ISSUE-3724</a>] - [ISSUE-3724] - : Polish the unit test of class ConsumeMessageConcurrentlyService</li><li>[<a href="https://github.com/apache/rocketmq/pull/3214" target="_blank" rel="noopener noreferrer">PR-3214</a>] - [PR-3214] optimize namesrv default address docs</li><li>[<a href="https://github.com/apache/rocketmq/issues/3692" target="_blank" rel="noopener noreferrer">ISSUE-3692</a>] - [ISSUE-3692] - docs: Modify the title content about the message query documentation.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3757" target="_blank" rel="noopener noreferrer">ISSUE-3757</a>] - [ISSUE-3757] - docs: Polish the document 'Design_Query.md'.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3801" target="_blank" rel="noopener noreferrer">ISSUE-3801</a>] - [ISSUE-3801] - Polish the document 'CLITools.md'.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3794" target="_blank" rel="noopener noreferrer">ISSUE-3794</a>] - [ISSUE-3794] - add DefaultMQPullConsumer document specification</li><li>[<a href="https://github.com/apache/rocketmq/issues/3774" target="_blank" rel="noopener noreferrer">ISSUE-3774</a>] - [ISSUE-3774] - docs: Polish the document 'Example_Transaction.md'.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3424" target="_blank" rel="noopener noreferrer">ISSUE-3424</a>] - [ISSUE-3424] - Polish the doc for tracing parts.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3550" target="_blank" rel="noopener noreferrer">ISSUE-3550</a>] - [ISSUE-3550] - doc:fix typo in readme</li><li>[<a href="https://github.com/apache/rocketmq/issues/3782" target="_blank" rel="noopener noreferrer">ISSUE-3782</a>] - [ISSUE-3782] - docs: Fix the default value of parameter 'sendMsgTimeout'.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3863" target="_blank" rel="noopener noreferrer">ISSUE-3863</a>] - [ISSUE-3863] - Updated Notice file to 2022</li><li>[<a href="https://github.com/apache/rocketmq/issues/3853" target="_blank" rel="noopener noreferrer">ISSUE-3853</a>] - [ISSUE-3853] - add log for interruptedException</li><li>[<a href="https://github.com/apache/rocketmq/issues/3852" target="_blank" rel="noopener noreferrer">ISSUE-3852</a>] - [ISSUE-3852] - Move the Logappender module to external</li><li>[<a href="https://github.com/apache/rocketmq/issues/3836" target="_blank" rel="noopener noreferrer">ISSUE-3836</a>] - [ISSUE-3836] - depreciated unused class</li><li>[<a href="https://github.com/apache/rocketmq/issues/3797" target="_blank" rel="noopener noreferrer">ISSUE-3797</a>] - [ISSUE-3797] - Improve DefaultMQProducerImpl code</li><li>[<a href="https://github.com/apache/rocketmq/issues/3789" target="_blank" rel="noopener noreferrer">ISSUE-3789</a>] - [ISSUE-3789] - optimize: Tag the name of consuming thread whith consumeGroup.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3773" target="_blank" rel="noopener noreferrer">ISSUE-3773</a>] - [ISSUE-3773] - Adding exception message with broker addr when occuring broker connect timeout</li><li>[<a href="https://github.com/apache/rocketmq/issues/3720" target="_blank" rel="noopener noreferrer">ISSUE-3720</a>] - [ISSUE-3720] - perf: avoid multiple expansion when the number of elements in the MessageConst class is determined</li><li>[<a href="https://github.com/apache/rocketmq/issues/3696" target="_blank" rel="noopener noreferrer">ISSUE-3696</a>] - [ISSUE-3696] - Optimize the query consumer connection display</li><li>[<a href="https://github.com/apache/rocketmq/issues/3684" target="_blank" rel="noopener noreferrer">ISSUE-3684</a>] - [ISSUE-3684] - change client jdk version to 1.6</li><li>[<a href="https://github.com/apache/rocketmq/issues/3539" target="_blank" rel="noopener noreferrer">ISSUE-3539</a>] - [ISSUE-3539] - Add parameter verification</li><li>[<a href="https://github.com/apache/rocketmq/issues/3651" target="_blank" rel="noopener noreferrer">ISSUE-3651</a>] - [ISSUE-3651] - for add netty channel option WRITE_BUFFER_WATER_MARK</li><li>[<a href="https://github.com/apache/rocketmq/issues/3642" target="_blank" rel="noopener noreferrer">ISSUE-3642</a>] - [ISSUE-3642] - Display GID and Topic with namespace</li><li>[<a href="https://github.com/apache/rocketmq/issues/3644" target="_blank" rel="noopener noreferrer">ISSUE-3644</a>] - [ISSUE-3644] - exchange parameters</li><li>[<a href="https://github.com/apache/rocketmq/issues/3645" target="_blank" rel="noopener noreferrer">ISSUE-3645</a>] - [ISSUE-3645] - Remove TBW102 topic not found warn log in rocketmq-clie…</li><li>[<a href="https://github.com/apache/rocketmq/issues/3622" target="_blank" rel="noopener noreferrer">ISSUE-3622</a>] - [ISSUE-3622] - bump up log4j-slf4j-impl version to 2.15.0</li><li>[<a href="https://github.com/apache/rocketmq/issues/3604" target="_blank" rel="noopener noreferrer">ISSUE-3604</a>] - [ISSUE-3604] - Some important interface methods add comment</li><li>[<a href="https://github.com/apache/rocketmq/issues/3587" target="_blank" rel="noopener noreferrer">ISSUE-3587</a>] - [ISSUE-3587] - Unnecessary boxing of primitives</li><li>[<a href="https://github.com/apache/rocketmq/issues/3593" target="_blank" rel="noopener noreferrer">ISSUE-3593</a>] - [ISSUE-3593] - entrySet() replace keySet()</li><li>[<a href="https://github.com/apache/rocketmq/issues/3564" target="_blank" rel="noopener noreferrer">ISSUE-3564</a>] - [ISSUE-3564] - Enclose namesrvAddr in example of mqadmin tool by quotation marks</li><li>[<a href="https://github.com/apache/rocketmq/issues/3565" target="_blank" rel="noopener noreferrer">ISSUE-3565</a>] - [ISSUE-3565] - Removing message filter impldev</li><li>[<a href="https://github.com/apache/rocketmq/issues/3558" target="_blank" rel="noopener noreferrer">ISSUE-3558</a>] - [ISSUE-3558] - Clear spelling errors in comments in quickstart</li><li>[<a href="https://github.com/apache/rocketmq/issues/3560" target="_blank" rel="noopener noreferrer">ISSUE-3560</a>] - [ISSUE-3560] - remove deprecated status in the orderly consumer examples.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3467" target="_blank" rel="noopener noreferrer">ISSUE-3467</a>] - [ISSUE-3467] - Fail fast on loading files with error mappedFileSize</li><li>[<a href="https://github.com/apache/rocketmq/issues/3424" target="_blank" rel="noopener noreferrer">ISSUE-3424</a>] - [ISSUE-3424] - Validators.checkMessage() is used twice.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3370" target="_blank" rel="noopener noreferrer">ISSUE-3370</a>] - [ISSUE-3370] - group same Exceptions</li><li>[<a href="https://github.com/apache/rocketmq/issues/3286" target="_blank" rel="noopener noreferrer">ISSUE-3286</a>] - [ISSUE-3286] - replace Timer with ScheduledExecutorService</li><li>[<a href="https://github.com/apache/rocketmq/issues/3048" target="_blank" rel="noopener noreferrer">ISSUE-3048</a>] - [ISSUE-3048] - add example of OnewayProducer and ScheduledMessage</li><li>[<a href="https://github.com/apache/rocketmq/issues/3015" target="_blank" rel="noopener noreferrer">ISSUE-3015</a>] - [ISSUE-3015] - when slaveAckOffset greater than local commitLog offset, break …</li><li>[<a href="https://github.com/apache/rocketmq/issues/2969" target="_blank" rel="noopener noreferrer">ISSUE-2969</a>] - [ISSUE-2969] - Add a skip accumulation message command in mqadmin.</li><li>[<a href="https://github.com/apache/rocketmq/issues/2580" target="_blank" rel="noopener noreferrer">ISSUE-2580</a>] - [ISSUE-2580] - Check producerTable or consumerTable is empty when updateTopicRouteInfoFromNameServer</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="bug">Bug<a href="#bug" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading"></a></h2><ul><li>[<a href="https://github.com/apache/rocketmq/issues/3860" target="_blank" rel="noopener noreferrer">ISSUE-3860</a>] - [ISSUE-3860] - fix wrong use of scheduleAtFixedRate in client code</li><li>[<a href="https://github.com/apache/rocketmq/issues/3551" target="_blank" rel="noopener noreferrer">ISSUE-3551</a>] - [ISSUE-3551] - Fix admin cloneoffset</li><li>[<a href="https://github.com/apache/rocketmq/issues/3527" target="_blank" rel="noopener noreferrer">ISSUE-3527</a>] - [ISSUE-3527] - Fix some request header setting errors and naming issues</li><li>[<a href="https://github.com/apache/rocketmq/issues/2516" target="_blank" rel="noopener noreferrer">ISSUE-2516</a>] - [ISSUE-2516] - Fix the value of sendThreadPoolQueueHeadWaitTimeMills is 0 most of the time</li><li>[<a href="https://github.com/apache/rocketmq/issues/3579" target="_blank" rel="noopener noreferrer">ISSUE-3579</a>] - [ISSUE-3579] - Fix spelling mistake in getter/setter method of mQClientFactory</li><li>[<a href="https://github.com/apache/rocketmq/pull/3663" target="_blank" rel="noopener noreferrer">PR-3603</a>] - [PR-3603] Fix spelling error in DefaultMessageStore</li><li>[<a href="https://github.com/apache/rocketmq/issues/3666" target="_blank" rel="noopener noreferrer">ISSUE-3666</a>] - [ISSUE-3666] - fix CI error in RIP-28 at getmQClientFactory</li><li>[<a href="https://github.com/apache/rocketmq/issues/3666" target="_blank" rel="noopener noreferrer">ISSUE-3666</a>] - [ISSUE-3666] - fix build error in RIP-28 at getmQclientFactory</li><li>[<a href="https://github.com/apache/rocketmq/issues/3687" target="_blank" rel="noopener noreferrer">ISSUE-3687</a>] - [ISSUE-3687] - Fix wrong method comment about transaction message.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3685" target="_blank" rel="noopener noreferrer">ISSUE-3685</a>] - [ISSUE-3685] - Fix param spelling error</li><li>[<a href="https://github.com/apache/rocketmq/issues/3630" target="_blank" rel="noopener noreferrer">ISSUE-3630</a>] - [ISSUE-3630] - Fix the bug that the broker will hang after polish the headWaitTimeMills method</li><li>[<a href="https://github.com/apache/rocketmq/issues/3601" target="_blank" rel="noopener noreferrer">ISSUE-3601</a>] - [ISSUE-3601] - Fix dledger put batch msg stats bug</li><li>[<a href="https://github.com/apache/rocketmq/issues/2706" target="_blank" rel="noopener noreferrer">ISSUE-2706</a>] - [ISSUE-2706] - Fix the problem of returning SEND_OK after flush failed</li><li>[<a href="https://github.com/apache/rocketmq/issues/3394" target="_blank" rel="noopener noreferrer">ISSUE-3394</a>] - [ISSUE-3394] - fix duplicate keys in trace message</li><li>[<a href="https://github.com/apache/rocketmq/issues/3476" target="_blank" rel="noopener noreferrer">ISSUE-3476</a>] - [ISSUE-3476] - Fix last separator of properties string is missing when using batch send</li><li>[<a href="https://github.com/apache/rocketmq/issues/3430" target="_blank" rel="noopener noreferrer">ISSUE-3430</a>] - [ISSUE-3430] - fix the problem that setting parameter mqClientApiTimeout doesn't take effect</li><li>[<a href="https://github.com/apache/rocketmq/issues/951" target="_blank" rel="noopener noreferrer">ISSUE-951</a>] - [ISSUE-951] - Fixed an incorrect offset problem in the ResetOffsetByTimeCommand</li><li>[<a href="https://github.com/apache/rocketmq/issues/3603" target="_blank" rel="noopener noreferrer">ISSUE-3603</a>] - [ISSUE-3603] - Fix(client): fetch and commit offset need to use master broker firstly</li><li>[<a href="https://github.com/apache/rocketmq/issues/3613" target="_blank" rel="noopener noreferrer">ISSUE-3613</a>] - [ISSUE-3613] - bug fix, solve message hash conflict in index file</li><li>[<a href="https://github.com/apache/rocketmq/issues/3786" target="_blank" rel="noopener noreferrer">ISSUE-3786</a>] - [ISSUE-3786] - fix: The length of properties value should be checked before converting them to short.</li><li>[<a href="https://github.com/apache/rocketmq/issues/3556" target="_blank" rel="noopener noreferrer">ISSUE-3556</a>] - [ISSUE-3556] - Fix:When broker is down, rocketmq client can not retry under Async send model</li><li>[<a href="https://github.com/apache/rocketmq/issues/3453" target="_blank" rel="noopener noreferrer">ISSUE-3453</a>] - [ISSUE-3453] - Producer cannot shutdown completely</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/release-notes/tags/release-notes">Release_Notes</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/release-notes/tags/rocket-mq">RocketMQ</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" 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