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https://issues.apache.org/jira/browse/SPARK-30457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhengruifeng resolved SPARK-30457.
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Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 27145
[https://github.com/apache/spark/pull/27145]
> Use PeriodicRDDCheckpointer instead of NodeIdCache
> --------------------------------------------------
>
> Key: SPARK-30457
> URL: https://issues.apache.org/jira/browse/SPARK-30457
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 3.0.0
> Reporter: zhengruifeng
> Assignee: zhengruifeng
> Priority: Minor
> Fix For: 3.0.0
>
>
> Both PeriodicRDDCheckpointer and NodeIdCache are used in tree models:
> PeriodicRDDCheckpointer is used in GBT to maintain prediction and errors,
> NodeIdCache is used to maintain NodeIds.
>
> The functionality of them are highly similar, and the update process of
> NodeIdCache is simply. I guess we can delete NodeIdCache and use
> PeriodicRDDCheckpointer instead.
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