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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2018/11/15 10:20:04 UTC

[GitHub] jiangxinlingdu opened a new issue #541: broker在存储数据并发问题

jiangxinlingdu opened a new issue #541: broker在存储数据并发问题
URL: https://github.com/apache/rocketmq/issues/541
 
 
   在CommitLog类中，putMessage的时候，
   MappedFile mappedFile = this.mappedFileQueue.getLastMappedFile();
   之后在putMessageLock.lock();在
    if (null == mappedFile || mappedFile.isFull()) {
                   mappedFile = this.mappedFileQueue.getLastMappedFile(0); // Mark: NewFile may be cause noise
               }
   如果有多个同时取到mappedFile 为null之后进入lock之后会创建2个MappedFile
   
   详情看：https://github.com/apache/rocketmq/pull/540

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