morningman opened a new issue #4476: URL: https://github.com/apache/incubator-doris/issues/4476
**Is your feature request related to a problem? Please describe.** The current balancing strategy is only used for data balancing between different BEs. But it cannot handle the data balance between different disks on the same BE. We often find that the usage of different disks on a BE varies greatly. #4373 try to use `"two random choices` algorithm to try to choose a more reasonable disk. But for existing data, we need a way to migrate and balance data between disks. **Describe the solution you'd like** We can use `storage medium migration task` to perform tablet migration. This is a simple and feasible solution. We can try to support this way first. But this way needs to lock the tablet during migration to prevent operations such as writing. So it is a feasible but not elegant solution. We can try to implement this function in a similar way to schema change in the future. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
