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https://issues.apache.org/jira/browse/SPARK-32202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-32202:
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Assignee: (was: Apache Spark)
> tree models auto infer compact integer type
> -------------------------------------------
>
> Key: SPARK-32202
> URL: https://issues.apache.org/jira/browse/SPARK-32202
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 3.1.0
> Reporter: zhengruifeng
> Priority: Major
>
> a feature from
> [LightGBM|https://lightgbm.readthedocs.io/en/latest/Parameters.html#max_bin]:
>
> "LightGBM will auto compress memory according to {{max_bin}}. For example,
> LightGBM will use {{uint8_t}} for feature value if {{max_bin=255}}"
>
>
>
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