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Posted to notifications@iotdb.apache.org by "Liuxuxin (Jira)" <ji...@apache.org> on 2021/11/02 08:32:00 UTC

[jira] [Created] (IOTDB-1911) Fix data increase after shutting down IoTDB, changing data dirs, then recovering it

Liuxuxin created IOTDB-1911:
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             Summary: Fix data increase after shutting down IoTDB, changing data dirs, then recovering it
                 Key: IOTDB-1911
                 URL: https://issues.apache.org/jira/browse/IOTDB-1911
             Project: Apache IoTDB
          Issue Type: Bug
    Affects Versions: master branch
            Reporter: Liuxuxin
            Assignee: Liuxuxin
             Fix For: master branch


# Description
If the IoTDB is shut down when compacting, and user change the data dirs then restart IoTDB, the data will increase abnormally.
# Cause
The compaction log records the information of source files and target file using their absolute path. If the data dirs is changed, the recover process cannot find the target file and source files  correctly, which may lead to the failure of deleting target file or source files . Therefore, the new compaction process may continue to write on the undeleted target tsfile. The redudant data will be kept in target tsfile.



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