[jira] [Created] (DRILL-4754) Missing values are not missing

["Ted Dunning (JIRA)" <ji...@apache.org>]

Ted Dunning created DRILL-4754:
----------------------------------

             Summary: Missing values are not missing
                 Key: DRILL-4754
                 URL: https://issues.apache.org/jira/browse/DRILL-4754
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Ted Dunning


If I have a query which reads from a JSON file where a field is a list or is missing, then the records where the field should missing will instead have a value for that field that is an empty list:
<verbatim>
0: jdbc:drill:> select * from maprfs.ted.`bug.json`;
+----+--------+------+
| a  |   b    |  c   |
+----+--------+------+
| 3  | [3,2]  | xyz  |
| 7  | []     | wxy  |
+----+--------+------+
2 rows selected (1.279 seconds)
</verbatim>
where the file in question contains these two records:
<verbatim>
{'a':3, 'b':[3,2], 'c':'xyz'}
{'a':7, 'c':'wxy'}
</verbatim>
The problem is in the second record of the result. I would have expected b to have had the value NULL.

I am using drill-1.6.0.






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