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Posted to issues@spark.apache.org by "Yuming Wang (JIRA)" <ji...@apache.org> on 2019/04/30 02:20:00 UTC

[jira] [Created] (SPARK-27601) Upgrade stream-lib to 2.9.6

Yuming Wang created SPARK-27601:
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             Summary: 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


1. Improve HyperLogLogPlus.merge and HyperLogLogPlus.mergeEstimators by using native arrays instead of ArrayLists to avoid boxing and unboxing of integers.
2. Improve HyperLogLogPlus.sortEncodedSet by using Arrays.sort on appropriately transformed encoded values, in this way boxing and unboxing of integers is avoided.



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