Sean Hsuan-Yi Chu created DRILL-4007:
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Summary: json reader treats empty list inconsistently,
Key: DRILL-4007
URL: https://issues.apache.org/jira/browse/DRILL-4007
Project: Apache Drill
Issue Type: Bug
Components: Storage - JSON
Reporter: Sean Hsuan-Yi Chu
Assignee: Sean Hsuan-Yi Chu
Priority: Critical
Attachments: a.json, b.json
Depending on where the empty list shows up, the empty list could be treated as
empty-list or just a null.
Running the following query on the folder with files in the attachment can
reproduce the observation:
{code}
+--------+
| a |
+--------+
| null |
| ["b"] |
| [] |
+--------+
{code}
Note that both first and third records come from
{code}
{“a”:[]}
{code}
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