Dear Yuheng, Thank you for sharing the exciting update on the region migration feature in IoTDB! It’s truly inspiring to witness the remarkable progress made in such a critical area of distributed database technology.
Region migration is not just a functional enhancement; it’s a significant achievement in overcoming complex distributed system challenges. Successfully implementing this feature required addressing intricate issues such as ConfigNode management, DataNode consensus algorithms, and distributed coordination—all of which are crucial to building a robust, scalable, and reliable system. Once again, thank you for your outstanding contributions to the IoTDB community. Best regards, Xiangpeng Hu At 2024-12-10 15:42:49, "liyuheng" <liyuheng55...@126.com> wrote: >Hello everyone, >I am Li Yuheng, a contributor to the IoTDB community. I am proud to share with >you an exciting feature in IoTDB: Region Migration. >As a distributed database, IoTDB uses regions as the base unit for distributed >data storage. The distribution of regions across the cluster determines the >allocation of write load and disk usage among DataNodes. With the region >migration feature, IoTDB users can flexibly allocate storage resources within >the cluster: >After adding a new DataNode, migrate regions to the new node to balance write >load and disk space. >Before removing an old DataNode, migrate all regions on it to other DataNodes. >The frame for region migration was initially implemented in 2022. This year, >after significant contributions from multiple community members (including >Deng Chao, Hu Xiangpeng, Liu Zhen, Tan Xinyu, and I), we have brought this >feature to a practical and usable state. >Now, region migration has the following characteristics: >Solid stability and performance. >The cluster can continue to handle reads and writes during region migration. >Any issues that interrupt the migration process can be addressed and resolved >without permanent impact. >As of the recently released IoTDB 1.3.3, the region migration feature is >generally available. We are continuing to iterate and optimize it, and even >better performance will be provided in versions 2.0 and 1.3.4. If you have any >feedback, please feel free to share with us. >We look forward to you exploring and enjoying this feature! >Best regards, >Li Yuheng
