baihezhuo opened a new issue #1585: [TIMEOUT_CLEAN_QUEUE] URL: https://github.com/apache/rocketmq/issues/1585 1. Hardware configuration 8C - 32G - ESSD200G 2. The configuration for broker： ``` brokerClusterName= brokerName= brokerId=0 namesrvAddr= listenPort=10911 fileReservedTime=48 diskMaxUsedSpaceRatio=95 storePathRootDir=/usr/local/rocketmq/store storePathCommitLog=/usr/local/rocketmq/store/commitlog storePathConsumerQueue=/usr/local/rocketmq/consumequeue **brokerRole=SYNC_MASTER** **flushDiskType=ASYNC_FLUSH** **sendMessageThreadPoolNums=64** **useReentrantLockWhenPutMessage=true** ``` 3. Problem phenomenon： - A lot of flow control log information often occurs，By tracking the code, it is found that the synchronous replication between the master node and the slave node has timed out： do sync transfer other node, wait return, but failed, topic putMessage not in lock eclipse time(ms)=6194 - log error 1 - org.apache.rocketmq.client.exception.MQBrokerException: CODE: 2 DESC: [TIMEOUT_CLEAN_QUEUE]broker busy, start flow control for a while, period in queue: 209ms, size of queue: 56 - log error 2 - 2019-11-09 15:46:08 ERROR SendMessageThread_26 - do sync transfer other node, wait return, but failed, topic: FUND_PENDING_CLEARING_MESSAGE_TOPIC tags: null client address: 10.32.0.157 2019-11-09 15:46:08 WARN SendMessageThread_26 - putMessage not in lock eclipse time(ms)=6194, bodyLength=2062 2019-11-09 15:46:08 ERROR SendMessageThread_57 - do sync transfer other node, wait return, but failed, topic: FUND_PENDING_CLEARING_MESSAGE_TOPIC tags: null client address: 10.32.0.157 2019-11-09 15:46:08 WARN SendMessageThread_57 - putMessage not in lock eclipse time(ms)=6194, bodyLength=2056 4. How to troubleshoot and solve such problems？
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