Xinyu Tan created IOTDB-3448:
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Summary: Migrate the logic of deleteRegion onto the consensus
module
Key: IOTDB-3448
URL: https://issues.apache.org/jira/browse/IOTDB-3448
Project: Apache IoTDB
Issue Type: Improvement
Reporter: Xinyu Tan
Assignee: Xinyu Tan
The deletion of a region is used as a raft log to synchronize inside the region.
If the underlying state machine fails to recover to the previous state after
the restart, NPE problems may occur during the restart.
In addition, executing a raft log that removes itself is very strange for the
consensus layer because we still end up removing the corresponding region in
the consensus layer， which is not done in current implementation
So we can move the deleteRegion operation above the consensus layer
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