Hi, The separation of logical and physical deletion is a good idea. The dev@list doesn't support attachments...
Thanks, ————————————————— Jialin Qiao Apache IoTDB PMC lu <cmlmaka...@126.com> 于2022年5月16日周一 20:18写道： > Hi all: > There are three steps in the current DeleteStorageGroup process, > there are three steps that need to go through. > 1. Delete partition informations on the PartitionRegion > 2. Delete metadata informations on schemaRegion based on the > partition information and clean up the cache > 3. Delete the data files and directories on dataRegion based on the > partition information > I/O operations in step 3 may take a long time and is prone to > exceptions, which is prone to deletion failures. > Here is a logical deletion plan instead of deleting data files > directly. The deletion is divided into logical and physical deletions, the > logical deletion simply screens the read and write operations related to > storage group, and the physical deletion deletes files and is executed > asynchronously.This simplifies the operation of deleting RPCs and reduce > the probability of timeouts and exceptions and is able to rollback when > exceptions occur. > Detail Chinese doc is attached. Any idea is welcomed. > > FYI > ---- > Lu Ming > > > > >
