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Posted to notifications@iotdb.apache.org by "yang caiyin (Jira)" <ji...@apache.org> on 2022/12/11 09:17:00 UTC

[jira] [Created] (IOTDB-5172) SingleDeviceViewNode can't get outputColumnTypes when it's isolated

yang caiyin created IOTDB-5172:
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             Summary: SingleDeviceViewNode can't get outputColumnTypes when it's isolated
                 Key: IOTDB-5172
                 URL: https://issues.apache.org/jira/browse/IOTDB-5172
             Project: Apache IoTDB
          Issue Type: Bug
            Reporter: yang caiyin
            Assignee: yang caiyin
             Fix For: master branch
         Attachments: image-2022-12-11-17-16-01-243.png

The SingleDeviceViewNode gets the outputColumnNames from MergeSortNode in LocalExecutionPlanner. However, in some situation such that only one SingleDeviceViewNode is assigned in data region, the lack of MergeSortNode will cause a null exception in visitSingleDeviceView.

!image-2022-12-11-17-16-01-243.png!



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