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https://issues.apache.org/jira/browse/HIVE-28997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17956985#comment-17956985
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Shohei Okumiya commented on HIVE-28997:
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Note: We may not need to work on this issue if we can fully replace Nashorn in
HIVE-28984.
> Replace jdk.nashorn.internal.ir.debug.ObjectSizeCalculator
> ----------------------------------------------------------
>
> Key: HIVE-28997
> URL: https://issues.apache.org/jira/browse/HIVE-28997
> Project: Hive
> Issue Type: Improvement
> Components: Test
> Reporter: Shohei Okumiya
> Assignee: Shohei Okumiya
> Priority: Major
> Labels: pull-request-available
>
> We are using nashorn-core to calculate an object size in
> TestVectorMapJoinFastHashTable. JDK previously bundled Nashorn as of JDK 8,
> and does not do so with JDK 17. So, we explicitly have a dependency on
> Nashorn. The current setup has several drawbacks.
> - Although we use it in our test codes, it is a compile dependency of Hive
> - It is suspicious that we can redistribute it as a part of Hive, as the
> license is GPL-like
> - The class, `jdk.nashorn.internal.ir.debug.ObjectSizeCalculator` which we
> are using, belongs to an internal package and it'll be removed in the future
>
> Therefore, we can explore a new option that replaces Nashorn. Fortunately, we
> don't use it as a JavaScript engine.
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