Web1) Set the message save time to the current timestamp, set the CRC inspection code. 2) If it is a delay message, change Topic to schedule_topic_xxxx, and back up the original Topic and QueueID. 3) Get the last mappedfile of CommitLog, then add a write message lock. 4) If MappedFile is full, create a new one. Web2、FlushRealTimeService在启动后,会在死循环中周期性的进行刷盘操作。 探索MappedFile的刷盘. 无论哪种刷盘,最终都调用了下面这个方法刷盘. CommitLog. …
org.apache.rocketmq.store.CommitLog$FlushRealTimeService. …
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Web2.3 FlushRealTimeService. 异步刷盘实现,run方法是一个while循环,只要服务没停止,就会一直定对CommitLog下的MappedFile文件进行刷盘。默认间隔时间是500ms,可通 … WebBUG REPORT 在RocketMQ运行过程中,将FlushDiskType从ASYNC_FLUSH修改为SYNC_FLUSH时,系统出错。 java.lang.ClassCastException: … WebUse GroupCommitService when synchronizing the brush Use FlushRealTimeService when asynchronously brushing If you op... RocketMq-synchronous replication and asynchronous replication Synchronous replication and asynchronous replication If a Broker group has Master and Slave, messages need to be replicated from Master to Slave. can dogs go to the zoo