H2O APIs should support JSON body POST

Description

POSTing json to H2O apis requires array-valued attributes to be turned into strings.

To avoid embarrassment, we shouldn't advertise having a REST api until this is fixed.

Assignee

Raymond Peck

Fix versions

None

Reporter

Prithvi Prabhu

Support ticket URL

None

Labels

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Affected Spark version

None

Customer Request Type

None

Task progress

None

CustomerVisible

No

Components

Priority

Critical
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