Stefán Baxter created DRILL-3508:
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Summary: Selecting from an empty directory in a union failes
Key: DRILL-3508
URL: https://issues.apache.org/jira/browse/DRILL-3508
Project: Apache Drill
Issue Type: Bug
Components: Query Planning & Optimization
Affects Versions: 1.1.0
Reporter: Stefán Baxter
Assignee: Jinfeng Ni
I union select where the right hand side points to an empty directory files
with the following error code:
Error: PARSE ERROR: Index: 0, Size: 0
[Error Id: fed7527a-9d7a-4980-80f5-ff3f0b92d49b on localhost:31010]
(state=,code=0)
We use this to merge tenant based information and sometimes there are no files
on the right hand side of the union. It would be ideal that that scenario would
return an empty list rather than an error.
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