Bryan Cutler created ARROW-15722:
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Summary: [Java] Improve error message for ListVector with wrong
number of children
Key: ARROW-15722
URL: https://issues.apache.org/jira/browse/ARROW-15722
Project: Apache Arrow
Issue Type: Improvement
Components: Java
Reporter: Bryan Cutler
Assignee: Bryan Cutler
If a ListVector is made without any children, the error message will say "Lists
have only one child. Found: []".
The wording could be improved a little to let the user know what went wrong.
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