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itemprop="description" content="- Source: rocketmq-all-5.2.0-source-release.zip [PGP] [SHA512]"><header><h1 class="title_f1Hy" itemprop="headline">Release Notes - Apache RocketMQ - Version 5.2.0</h1><div class="container_mt6G margin-vert--md"><time datetime="2024-01-30T00:00:00.000Z" itemprop="datePublished">January 30, 2024</time> · <!-- -->9 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 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| :::</li></ul><p>Below is a summary of the issues addressed in the 5.2.0 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>[ISSUE #7545][RIP-65]<!-- --> Support efficient random index for massive messages by @lizhimins in <a href="https://github.com/apache/rocketmq/pull/7546" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7546</a></li><li>[ISSUE #7064][RIP-66]<!-- --> Support KV(RocksDB) Storage for ConsumeQueue by @fujian-zfj in <a href="https://github.com/apache/rocketmq/pull/7120" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7120</a></li><li>[ISSUE #7300][RIP-67]<!-- --> jRaft-Controller Implementation by @yulangz in <a href="https://github.com/apache/rocketmq/pull/7301" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7301</a></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>[ISSUE #7381]<!-- --> Fix the problem of inaccurate timer message metric by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7382" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7382</a></li><li>[ISSUE #7389]<!-- --> Fix the problem that getLastMappedFile function affects performance by @guyinyou in <a href="https://github.com/apache/rocketmq/pull/7390" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7390</a></li><li>[ISSUE #7393]<!-- --> Add timeout configuration for grpc server by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7394" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7394</a></li><li>[ISSUE #7396]<!-- --> Fix wrong word in BrokerController#doResterBrokerAll by @francisoliverlee in <a href="https://github.com/apache/rocketmq/pull/7397" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7397</a></li><li>[ISSUE #7313]<!-- --> Enhancement Optimization Method name by @shriVATSA54 in <a href="https://github.com/apache/rocketmq/pull/7420" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7420</a></li><li>[ISSUE #7321]<!-- --> Refactor NettyRemotingAbstract with unify future implementation by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7322" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7322</a></li><li>[ISSUE #7296]<!-- --> Add ChannelEventListener for MQClientAPIImpl by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7324" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7324</a></li><li>[ISSUE #7429]<!-- --> Clean channel map when CLIENT_UNREGISTER in proxy by @xdkxlk in <a href="https://github.com/apache/rocketmq/pull/7426" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7426</a></li><li>[ISSUE #7431]<!-- --> Fix flaky test of DLedgerControllerTest#testBrokerLifecycleListener by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7432" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7432</a></li><li>[ISSUE #7433]<!-- --> Update the version in the README.md document to 5.1.4 by @mxsm in <a href="https://github.com/apache/rocketmq/pull/7434" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7434</a></li><li>[ISSUE #7441]<!-- --> Fix log "Init the confirmOffset" keep printing error in controller mode by @fujian-zfj in <a href="https://github.com/apache/rocketmq/pull/7442" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7442</a></li><li>[ISSUE #7444]<!-- --> Fix testCalculateFileSizeInPath test can not rerun in same environment by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7445" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7445</a></li><li>[ISSUE #7425]<!-- --> Add RocketmqControllerConsole log to print config to console by @ingdex in <a href="https://github.com/apache/rocketmq/pull/7458" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7458</a></li><li>[ISSUE #7451]<!-- --> Override toString for TopicConfigAndQueueMapping by @LetLetMe in <a href="https://github.com/apache/rocketmq/pull/7452" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7452</a></li><li>[ISSUE #7265]<!-- --> Adding how to debug in Idea document by @joeCarf in <a href="https://github.com/apache/rocketmq/pull/7266" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7266</a></li><li>[ISSUE #7464]<!-- --> Polish the pop logger format by @joeCarf in <a href="https://github.com/apache/rocketmq/pull/7465" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7465</a></li><li>[ISSUE #7330]<!-- --> Fix channel connect issue for goaway by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7467" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7467</a></li><li>[ISSUE #7472]<!-- --> AddBroker removes parsing configuration from body by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7472" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7472</a></li><li>[ISSUE #7454]<!-- --> Utilizing cache to avoid duplicate parsing by @guyinyou in <a href="https://github.com/apache/rocketmq/pull/7455" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7455</a></li><li>[ISSUE #7475]<!-- --> Check the input yaml and the path in ACL by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7475" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7475</a></li><li>[ISSUE #7231]<!-- --> Fix proxy client language error by @weihubeats in <a href="https://github.com/apache/rocketmq/pull/7200" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7200</a></li><li>[ISSUE #7489]<!-- --> Code comment enhancement in example by @joeCarf in <a href="https://github.com/apache/rocketmq/pull/7490" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7490</a></li><li>[ISSUE #7493]<!-- --> Introduce a new event NettyEventType.ACTIVE by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7494" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7494</a></li><li>[ISSUE #7486]<!-- --> Remove getBrokerClusterAclConfig from admin and server by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7486" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7486</a></li><li>[ISSUE #7497]<!-- --> Extract the frequency of calling updateNamesrvAddr into a configuration by @xdkxlk in <a href="https://github.com/apache/rocketmq/pull/7498" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7498</a></li><li>[ISSUE #7437]<!-- --> Add the CRC check of commitlog by @guyinyou in <a href="https://github.com/apache/rocketmq/pull/7468" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7468</a></li><li>[ISSUE #7505]<!-- --> Do not validate the length when deleting a topic by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7506" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7506</a></li><li>[ISSUE #7501]<!-- --> The broker supports idempotence in creating topics by @fuyou001 in <a href="https://github.com/apache/rocketmq/pull/7502" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7502</a></li><li>[ISSUE #7523]<!-- --> Message will flush timeout when transientStorePoolEnable=true and flushDiskType=SYNC_FLUSH by @fujian-zfj in <a href="https://github.com/apache/rocketmq/pull/7524" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7524</a></li><li>[ISSUE #7531]<!-- --> Clear POP_CK when sending messages by @xdkxlk in <a href="https://github.com/apache/rocketmq/pull/7532" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7532</a></li><li>[ISSUE #7419]<!-- --> Fix unstable UtilAllTest#testCalculateFileSizeInPath on Windows by @mureinik in <a href="https://github.com/apache/rocketmq/pull/7419" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7419</a></li><li>[ISSUE #7547]<!-- --> Let consumer be aware of message queue assignment change by @lizhanhui in <a href="https://github.com/apache/rocketmq/pull/7548" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7548</a></li><li>[ISSUE #7551]<!-- --> Reuse helper methods from Netty to free direct byte buffer by @lizhanhui in <a href="https://github.com/apache/rocketmq/pull/7550" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7550</a></li><li>[ISSUE #7570]<!-- --> Add default value for lastPopTimestamp by @HScarb in <a href="https://github.com/apache/rocketmq/pull/7571" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7571</a></li><li>[ISSUE #7462]<!-- --> Remove deprecated LocalTransactionExecuter by @985492783 in <a href="https://github.com/apache/rocketmq/pull/7463" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7463</a></li><li>[ISSUE #7567]<!-- --> TransactionProducer get the topic route before sending the message by @panzhi33 in <a href="https://github.com/apache/rocketmq/pull/7569" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7569</a></li><li>[ISSUE #7543]<!-- --> Retry topic v2 in pop by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7544" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7544</a></li><li>[ISSUE #7577]<!-- --> SlaveActingMaster Timer Message retry without escape logic by @AYue-94 in <a href="https://github.com/apache/rocketmq/pull/7578" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7578</a></li><li>[ISSUE #7584]<!-- --> Add validation in broker/namesrv configure updating command. by @ShannonDing in <a href="https://github.com/apache/rocketmq/pull/7584" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7584</a></li><li>[ISSUE #7587]<!-- --> Add validation in broker container configure updating command by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7587" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7587</a></li><li>[ISSUE #7586]<!-- --> Add set method for config black list in broker/namesrv/controller config. by @ShannonDing in <a href="https://github.com/apache/rocketmq/pull/7586" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7586</a></li><li>[ISSUE #7592]<!-- --> testCleanBuffer unit test modifies, changed non-direct … by @yp969803 in <a href="https://github.com/apache/rocketmq/pull/7593" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7593</a></li><li>[ISSUE #7534]<!-- --> Use high performance concurrent set to replace copyonwriteset by @keranbingaa in <a href="https://github.com/apache/rocketmq/pull/7583" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7583</a></li><li>[ISSUE #7585]<!-- --> Support message filtering in rocketmq tiered storage by @lizhimins in <a href="https://github.com/apache/rocketmq/pull/7594" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7594</a></li><li>[ISSUE #7614]<!-- --> Fix flaky test RocksDBMessageStoreTest by @lizhanhui in <a href="https://github.com/apache/rocketmq/pull/7625" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7625</a></li><li>[ISSUE #7638]<!-- --> Bump com.squareup.okio:okio-jvm from 3.0.0 to 3.4.0 by @dependabot in <a href="https://github.com/apache/rocketmq/pull/7638" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7638</a></li><li>[ISSUE #7627]<!-- --> Fix flaky test testSemiSyncReplicaWhenAdaptiveDegradation by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7631" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7631</a></li><li>[ISSUE #7636]<!-- --> Bump snakeyaml from 1.32 to 2.0 by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7632" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7632</a></li><li>[ISSUE #7637]<!-- --> Bump grpc from 1.50.0 to 1.53.0 by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7633" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7633</a></li><li>[ISSUE #7634]<!-- --> Introduce controllableOffset to prevent unnecessary suspension when OFFSET_ILLEGAL by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7635" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7635</a></li><li>[ISSUE #7585]<!-- --> Always return duplicate buffer when filter message and fix log format by @lizhimins in <a href="https://github.com/apache/rocketmq/pull/7654" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7654</a></li><li>[ISSUE #7543]<!-- --> Use "+" as the new separator for retry topic by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7655" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7655</a></li><li>[ISSUE #7543]<!-- --> Only call a single type of retry topic in pop by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7665" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7665</a></li><li>[ISSUE #7646]<!-- --> Optimize pull onException logging by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7647" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7647</a></li><li>[ISSUE #7659]<!-- --> Trim property by @DongyuanPan in <a href="https://github.com/apache/rocketmq/pull/7660" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7660</a></li><li>[ISSUE #7656]<!-- --> ConfirmOffset directly takes the max offset when allAckInSyncStateSet is false by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7657" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7657</a></li><li>[ISSUE #7669]<!-- --> Map variable delayLevelTable changed to ConcurrentSkipL… by @yp969803 in <a href="https://github.com/apache/rocketmq/pull/7675" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7675</a></li><li>[ISSUE #7679]<!-- --> Optimize the serialization of RemotingCommand processTimer property by @mxsm in <a href="https://github.com/apache/rocketmq/pull/7683" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7683</a></li><li>[ISSUE #7676]<!-- --> Use clientDecode for consuming message directly by @cserwen in <a href="https://github.com/apache/rocketmq/pull/7677" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7677</a></li><li>[ISSUE #7680]<!-- --> Bump guava version from 31.1-jre to 32.0.1-jre by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7681" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7681</a></li><li>[ISSUE #7330]<!-- --> Add goaway and reconnection mechanism by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7331" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7331</a></li><li>[ISSUE #7686]<!-- --> The bornTime is not set when using the popMessage API in cluster mode. by @dingshuangxi888 in <a href="https://github.com/apache/rocketmq/pull/7687" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7687</a></li><li>[ISSUE #7642]<!-- --> Add return value for sendHeartbeat related method by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7643" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7643</a></li><li>[ISSUE #7644]<!-- --> Optimize client rebalance by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7645" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7645</a></li><li>[ISSUE #7710]<!-- --> Handle blank string for UtilAll#split to fix the bugs of ACL by @Qinglong-Lee in <a href="https://github.com/apache/rocketmq/pull/7712" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7712</a></li><li>[ISSUE #7719]<!-- --> Add more property check for dealy message when auto-ba… by @zhiliatom in <a href="https://github.com/apache/rocketmq/pull/7720" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7720</a></li><li>[ISSUE #7543]<!-- --> Add enableRetryTopicV2 brokerConfig by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7734" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7734</a></li><li>[ISSUE #7699]<!-- --> Add namespace v2 in client by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7700" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7700</a></li><li>[ISSUE #7747]<!-- --> Simplify code checks using Optional in ClientRequestProcessor#getRouteInfoByTopic method by @mxsm in <a href="https://github.com/apache/rocketmq/pull/7748" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7748</a></li><li>[ISSUE #7495]<!-- --> Support Higher Java version in Windows by @joeCarf in <a href="https://github.com/apache/rocketmq/pull/7507" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7507</a></li><li>[ISSUE #7757]<!-- --> Use <code>CompositeByteBuf</code> to prevent memory copy. by @dao-jun in <a href="https://github.com/apache/rocketmq/pull/7694" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7694</a></li><li>[ISSUE #7760]<!-- --> Make timerSkipUnknownError can be set by config file by @leizhiyuan in <a href="https://github.com/apache/rocketmq/pull/7763" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7763</a></li><li>[ISSUE #7500]<!-- --> Enhanced metrics for timing and transactional messages by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7500" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7500</a></li><li>[ISSUE #7699]<!-- --> Refactor NamespaceRpcHook by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7769" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7769</a></li><li>[ISSUE #7774]<!-- --> Make the handle of ppv2 tlv more extendable by @dingshuangxi888 in <a href="https://github.com/apache/rocketmq/pull/7775" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7775</a></li><li>[ISSUE #7781]<!-- --> Get namespace from gRPC header by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7782" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7782</a></li><li>[ISSUE #7772]<!-- --> Ensuring broker protection capabilities when POP does not return ACK by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7773" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7773</a></li><li>[ISSUE #7785]<!-- --> Remove the redundant code by @wyyl1 in <a href="https://github.com/apache/rocketmq/pull/7784" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7784</a></li><li>[ISSUE #7777]<!-- --> Optimize the logic of DefaultRequestProcessor#getTopicsByCluster to avoid unnecessary deserialization by @mxsm in <a href="https://github.com/apache/rocketmq/pull/7778" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7778</a></li><li>[ISSUE #7786]<!-- --> Optimize the execution logic of tool.sh in the JRE environment by @sevenleave in <a href="https://github.com/apache/rocketmq/pull/7787" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7787</a></li><li>[ISSUE #7446]<!-- --> Add config of maxFilterMessageSize by @SchopenhauerZhang in <a href="https://github.com/apache/rocketmq/pull/7447" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7447</a></li><li>[ISSUE #5613]<!-- --> Change the broker default value configuration by @yp969803 in <a href="https://github.com/apache/rocketmq/pull/7581" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7581</a></li><li>[ISSUE #7765]<!-- --> Fix unit test testEstimateLag by @landonchan90 in <a href="https://github.com/apache/rocketmq/pull/7805" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7805</a></li><li>[ISSUE #7797]<!-- --> Update copyright year to 2024 by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7797" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7797</a></li><li>[ISSUE #7715]<!-- --> Update Bazel toolchain to make the CI work by @bazelisky in <a href="https://github.com/apache/rocketmq/pull/7714" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7714</a></li><li>[ISSUE #7791]<!-- --> Polish the code for jraft controller by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7792" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7792</a></li><li>[ISSUE #7538]<!-- --> Fix wrong cachedMsgSize if msg body is changed in consumer callback by @yuz10 in <a href="https://github.com/apache/rocketmq/pull/7807" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7807</a></li><li>[ISSUE #7622]<!-- --> Revise the measurement method of GROUP_GET_LATENCY to reveal its intended semantics by @RongtongJin in <a href="https://github.com/apache/rocketmq/pull/7808" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7808</a></li><li>[ISSUE #7803]<!-- --> Add try catch for lock and unlock by @drpmma in <a href="https://github.com/apache/rocketmq/pull/7804" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7804</a></li><li>[ISSUE #7740]<!-- --> Optimize LocalFileOffsetStore by @redlsz in <a href="https://github.com/apache/rocketmq/pull/7819" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7819</a></li><li>[ISSUE #7822]<!-- --> Fix NettyRemotingClient can't connect to IPv6 address. by @kingkh1995 in <a href="https://github.com/apache/rocketmq/pull/7823" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7823</a></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>[ISSUE #7398]<!-- --> Fix ExportConfigsCommand NPE by @shirenchuang in <a href="https://github.com/apache/rocketmq/pull/7399" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7399</a></li><li>[ISSUE #7400]<!-- --> Fix getBrokerEpochSubCommand NPE by @shirenchuang in <a href="https://github.com/apache/rocketmq/pull/7401" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7401</a></li><li>[ISSUE #7410]<!-- --> Handle the Exception when the Proxy requests the client failed. by @dingshuangxi888 in <a href="https://github.com/apache/rocketmq/pull/7411" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7411</a></li><li>[ISSUE #7412]<!-- --> Fix pop revive message error when the checkpoint is a reput one by @redlsz in <a href="https://github.com/apache/rocketmq/pull/7413" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7413</a></li><li>[ISSUE #7439]<!-- --> Add getter for class Message to fix json serialize bug by @LetLetMe in <a href="https://github.com/apache/rocketmq/pull/7439" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7439</a></li><li>[ISSUE #7453]<!-- --> Fix the problem in constructing the GetMessageResult by @guyinyou in <a href="https://github.com/apache/rocketmq/pull/7456" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7456</a></li><li>[ISSUE #7511]<!-- --> Lock granularity issue causing LMQ message loss by @DongyuanPan in <a href="https://github.com/apache/rocketmq/pull/7525" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7525</a></li><li>[ISSUE #7562]<!-- --> BugFix for estimating message accumulation correctly by @lollipopjin in <a href="https://github.com/apache/rocketmq/pull/7563" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7563</a></li><li>[ISSUE #7574]<!-- --> Fix RunningFlags conflict by @guyinyou in <a href="https://github.com/apache/rocketmq/pull/7575" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7575</a></li><li>[ISSUE #7545]<!-- --> Fix set mapped file to null cause file can not destroy by @lizhimins in <a href="https://github.com/apache/rocketmq/pull/7612" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7612</a></li><li>[ISSUE #7601]<!-- --> Fix slave acting master bug by @gaoyf in <a href="https://github.com/apache/rocketmq/pull/7603" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7603</a></li><li>[ISSUE #7626]<!-- --> Topic perm was mistakenly changed to 4 in dledger mode by @LittleBoy18 in <a href="https://github.com/apache/rocketmq/pull/7661" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7661</a></li><li>[ISSUE #7684]<!-- --> Fix iterator.remove() bug by @EvanMi in <a href="https://github.com/apache/rocketmq/pull/7682" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7682</a></li><li>[ISSUE #7702]<!-- --> Fix ascii check for ppv2 tls. by @dingshuangxi888 in <a href="https://github.com/apache/rocketmq/pull/7703" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7703</a></li><li>[ISSUE #7697]<!-- --> Fix can't open controller metricsExporter. by @baijun44 in <a href="https://github.com/apache/rocketmq/pull/7705" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7705</a></li><li>[ISSUE #7689]<!-- --> In Controller mode, messages may lost due to sharing the same cq offset by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7690" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7690</a></li><li>[ISSUE #7658]<!-- --> Fix bug of timer message metrics with setDelayTimeMs by @leizhiyuan in <a href="https://github.com/apache/rocketmq/pull/7743" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7743</a></li><li>[ISSUE #7753]<!-- --> Fix ppv2 tls ascii start with (byte)2 by @dingshuangxi888 in <a href="https://github.com/apache/rocketmq/pull/7753" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7753</a></li><li>[ISSUE #7599]<!-- --> Fix dledger recover abnormally may lost consume queue of tail by @bxfjb in <a href="https://github.com/apache/rocketmq/pull/7599" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7599</a></li><li>[ISSUE #7812]<!-- --> Remove reachable flag in brokers' available judgement. by @GenerousMan in <a href="https://github.com/apache/rocketmq/pull/7814" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7814</a></li><li>[ISSUE #7813]<!-- --> SetStartDetectorEnable Not effective by @leizhiyuan in <a href="https://github.com/apache/rocketmq/pull/7825" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7825</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="new-contributors">New Contributors<a href="#new-contributors" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading"></a></h2><ul><li>@shriVATSA54 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7420" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7420</a></li><li>@LetLetMe made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7439" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7439</a></li><li>@golden-yang made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7436" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7436</a></li><li>@mureinik made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7419" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7419</a></li><li>@985492783 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7463" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7463</a></li><li>@AYue-94 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7578" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7578</a></li><li>@yp969803 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7593" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7593</a></li><li>@LittleBoy18 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7661" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7661</a></li><li>@EvanMi made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7682" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7682</a></li><li>@baijun44 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7705" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7705</a></li><li>@Qinglong-Lee made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7712" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7712</a></li><li>@dao-jun made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7694" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7694</a></li><li>@bxfjb made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7599" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7599</a></li><li>@wyyl1 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7784" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7784</a></li><li>@sevenleave made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7787" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7787</a></li><li>@yulangz made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7301" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7301</a></li><li>@landonchan90 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7805" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7805</a></li><li>@bazelisky made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7714" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7714</a></li><li>@kingkh1995 made their first contribution in <a href="https://github.com/apache/rocketmq/pull/7823" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/pull/7823</a></li></ul><p><strong>Full Changelog</strong>: <a href="https://github.com/apache/rocketmq/compare/rocketmq-all-5.1.4...rocketmq-all-5.2.0" target="_blank" rel="noopener noreferrer">https://github.com/apache/rocketmq/compare/rocketmq-all-5.1.4...rocketmq-all-5.2.0</a></p></div></div></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" href="/release-notes/tags/version">Version</a></li></ul></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link 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