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Posted to notifications@iotdb.apache.org by "Wei Shao (Jira)" <ji...@apache.org> on 2020/10/22 04:16:00 UTC

[jira] [Created] (IOTDB-954) Parallel auto-creating schema may write unrecognizable timeseries in mlog.txt

Wei Shao created IOTDB-954:
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             Summary: Parallel auto-creating schema may write unrecognizable timeseries in mlog.txt
                 Key: IOTDB-954
                 URL: https://issues.apache.org/jira/browse/IOTDB-954
             Project: Apache IoTDB
          Issue Type: Bug
          Components: Core/Engine
            Reporter: Wei Shao
         Attachments: Screen Shot 2020-10-22 at 12.12.09 PM.png

When writing to IoTDB server with multiple clients at the same time, it turns out that the auto create schema operation may write incorrect timeseries into mlog. 

It probably a synchronization issue. The _createTimeseries()_ in mLogWriter.java is not atomic, causing the content in mlog.txt not readable.



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