hexueyuan opened a new pull request, #8897: URL: https://github.com/apache/rocketmq/pull/8897
<!-- Please make sure the target branch is right. In most case, the target branch should be `develop`. --> ### Which Issue(s) This PR Fixes <!-- Please ensure that the related issue has already been created, and [link this pull request to that issue using keywords](<https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword>) to ensure automatic closure. --> Fixes #8859 ### Brief Description <!-- Write a brief description for your pull request to help the maintainer understand the reasons behind your changes. --> I changed the key of the requestTable in the AllocateMappedFileService class from the FilePath to the FileName(this must be the only one), and then added a getCachedMappedFilePath method to provide to the MultiPathMappedFileQueue to check whether the MappedFile of a specified offset MappedFile create request has been submitted, and if so, obtain the cached FilePath, otherwise a new path is generated based on the previous rules. ### How Did You Test This Change? <!-- In order to ensure the code quality of Apache RocketMQ, we expect every pull request to have undergone thorough testing. --> I make a unit test to recurrence this case in testUniqueNextNextMappedFile(). In the previous implementation, the results obtained were as shown in the picture below, the MappedFile 00000000000000001024 repeatedly appear in directory a and directory b.  This problem was solved in the new implementation and the result is as follows:  -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@rocketmq.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
