R: h2o.unique returns the entire domain rather than the unique values present in the column

[exalate-issue-sync]

On original frames the unique values in a categorical column may be the same as the levels in a column. However if I was to subset iris dataset to only have setosa and versicolor, unique will still return the original domain. h2o.unique and h2o.levels have the same functionality.

{code:r}
library(h2o)
h2o.init(nthreads = -1)
iris.hex = as.h2o(iris)
h2o.unique(iris.hex$Species)

C1

1 setosa

2 versicolor

3 virginica

Subset iris dataset

iris_subset = iris.hex[1:100,]

Run table to track

h2o.table(iris_subset$Species)

Species Count

1 setosa 50

2 versicolor 50

However h2o.unique still returns virginica

h2o.unique(iris_subset$Species)

C1

1 setosa

2 versicolor

3 virginica

{code}

[hasithjp]

JIRA Issue Migration Info

Jira Issue: PUBDEV-4722
Assignee: Pavel Pscheidl
Reporter: Amy Wang
State: Resolved
Fix Version: 3.30.1.2
Attachments: N/A
Development PRs: N/A