Haiming Zhu created IOTDB-4222:
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Summary: Create data region repeatedly
Key: IOTDB-4222
URL: https://issues.apache.org/jira/browse/IOTDB-4222
Project: Apache IoTDB
Issue Type: Bug
Components: Core/Engine
Affects Versions: 0.13.0, 0.14.0
Reporter: Haiming Zhu
Assignee: Haiming Zhu
Attachments: cause.png
One data region maybe created repeatedly when the storage group is created and
deleted concurrently.
The procedure is (threads are conccurent):
# thread-1 creates one storage group
# thread-2 writes some data
# thread-3 deletes this storage group
# thread-4 creates this storage group again
The root cause is as below:
!cause.png!
When the first thread creates one storage group and the data region hasn't been
ready, the second thread deletes this strorage group and the third thread
creates this storage group again. The two create procedures's mnodes are
different, so it's unsafe to synchronize mnode.
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