Ignored columns returns an array instead of list in 3.32

Description

The expectation is that a MOJO’s ignored_columns parameter should return a list of strings, but in H2O-3 3.32 (potentially as early as 3.30 - needs verification, but not in earlier versions of H2O-3) ignored_columns returns a list of arrays:

output looks like:

expected output (which works for in-cluster h2o-model object):

To reproduce run the following code snippet on 3.32.0.3:

Assignee

Michal Kurka

Fix versions

None

Reporter

Lauren DiPerna

Support ticket URL

None

Labels

None

Affected Spark version

None

Customer Request Type

None

Task progress

None

ReleaseNotesHidden

None

CustomerVisible

No

Components

Priority

Major