Stefán Baxter created DRILL-3509:
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Summary: Empty JSON files trigger exception when used in a union
Key: DRILL-3509
URL: https://issues.apache.org/jira/browse/DRILL-3509
Project: Apache Drill
Issue Type: Bug
Components: Query Planning & Optimization
Affects Versions: 1.1.0
Reporter: Stefán Baxter
Assignee: Jinfeng Ni
When the right hand side of a union is a directory search that involving an
empty json file (or a empty log file waiting for first log lines) causes this
exception:
{
"errorMessage" : "PARSE ERROR: From line 1, column 564 to line 1, column 574:
Column 'occurred_at' not found in any table\n\n\n[Error Id:
bef7370a-3c4e-4c35-8126-33c391ecb8ce on localhost:31010]"
}
where 'occurred_at' is the first column used/requested.
This works fine if no union is involved but it happens regardless of the
left/right position of the directory search if union is being called.
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