Bryan Cutler created ARROW-612:
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Summary: [Java] Field toString should show nullable flag status
Key: ARROW-612
URL: https://issues.apache.org/jira/browse/ARROW-612
Project: Apache Arrow
Issue Type: Improvement
Components: Java - Vectors
Reporter: Bryan Cutler
Assignee: Bryan Cutler
Priority: Trivial
Often when comparing Schemas, I'll see an error message like below because of
differing schemas. The only difference is one is nullable and one is not, but
that info is not printed in the {{Field.toString}} method.
{noformat}
- numeric type conversion *** FAILED *** (118 milliseconds)
[info] java.lang.IllegalArgumentException: Different schemas:
[info] Schema<i: Int(32, true)>
[info] Schema<i: Int(32, true)>
[info] at
org.apache.arrow.vector.util.Validator.compareSchemas(Validator.java:43)
{noformat}
I would be nice to match the C++ {{Field.toString}} that prints " not null "
only if the nullable flag is not set. Which would then look like this
{noformat}
[info] Schema<i: Int(32, true) not null>
[info] Schema<i: Int(32, true)>
{noformat}
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