Hi, We will create a region for this storage group, and allocate all replicas of this region to datanodes. Then, newly created data partition could be routed to this region.
1. Does the exist data under the prefixPath will be automatically migrated to the new region? Currently, no. But we could also migrate some existing data by some sql. 2. Does the prefixPath must be a storage group name, or any arbitrary prefix path? Yes. Thanks, Jialin Qiao Eric Pai <[email protected]> 于2022年8月18日周四 11:00写道： > Hi, > > Could you explain what will happen after a region being created manually > in detail? And I have some questions about this SQL > 1. Does the exist data under the prefixPath will be automatically migrated > to the new region? > 2. Does the prefixPath must be a storage group name, or any arbitrary > prefix path? > > 在 2022/8/18 10:50，“Yongzao Dan”<[email protected]> 写入: > > Hi, > I'm planning to add a SQL for IoTDB cluster version. Here are > the details of this SQL: > > > Motivation: We don't have enough evidence to design an > optimal RegionGroup expansion algorithm yet. > If a large number of devices are created in a StorageGroup and the > SeriesPartitionSlot is filled, the current algorithm cannot > expand RegionGroup anymore. > Therefore, we need a special SQL to enable DBA > expand RegionGroup manually. > > > Syntax Definition: create (data | schema) region on > prefixPath(Represent a specific StorageGroup) > > > Function Definition: Create a new data/schema RegionGroup for > the specific StorageGroup. > > > > ------------------------------------------------------------------------------------------------------------ > > > Yongzao Dan, > School of Software, Tsinghua University > >
