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https://issues.apache.org/jira/browse/SPARK-58633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruifeng Zheng reassigned SPARK-58633:
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Assignee: Ruifeng Zheng
> Use integer label indexes in StringIndexerModel
> -----------------------------------------------
>
> Key: SPARK-58633
> URL: https://issues.apache.org/jira/browse/SPARK-58633
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Affects Versions: 5.0.0
> Reporter: Ruifeng Zheng
> Assignee: Ruifeng Zheng
> Priority: Major
> Labels: pull-request-available
>
> StringIndexerModel currently stores label indexes as Double values in an
> OpenHashMap. Store them as Int values instead to reduce the model closure
> memory footprint, and cast indexed values to Double only when producing the
> output column.
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