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https://issues.apache.org/jira/browse/SPARK-27601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-27601.
-------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 24492
[https://github.com/apache/spark/pull/24492]
> Upgrade stream-lib to 2.9.6
> ---------------------------
>
> Key: SPARK-27601
> URL: https://issues.apache.org/jira/browse/SPARK-27601
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
> Fix For: 3.0.0
>
>
> 1. Improve HyperLogLogPlus.merge and HyperLogLogPlus.mergeEstimators by using
> native arrays instead of ArrayLists to avoid boxing and unboxing of integers.
> https://github.com/addthis/stream-lib/pull/98
> 2. Improve HyperLogLogPlus.sortEncodedSet by using Arrays.sort on
> appropriately transformed encoded values, in this way boxing and unboxing of
> integers is avoided. https://github.com/addthis/stream-lib/pull/97
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