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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/02/15 08:53:57 UTC

[GitHub] [rocketmq] dongeforever commented on pull request #3848: [ISSUE #3831] Swapping mapped-byte-buffer to save memory on a system with extra-large disks.

dongeforever commented on pull request #3848:
URL: https://github.com/apache/rocketmq/pull/3848#issuecomment-1040015139


   @zhouxinyu It may have difficulty doing the lazy mapping safely while the mapped file is being used concurrently, which may need to introduce a lock.
   
   The current code is clear,  avoiding the anxiety of concurrent error, and is used for a long time in the production env.
   
   BTW, if you have a simple way to implement the lazy mapping, it is ok to show it in detail.


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