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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2020/03/18 09:14:00 UTC

[jira] [Created] (SPARK-31182) PairRDD support aggregateByKeyWithinPartitions

zhengruifeng created SPARK-31182:
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             Summary: PairRDD support aggregateByKeyWithinPartitions
                 Key: SPARK-31182
                 URL: https://issues.apache.org/jira/browse/SPARK-31182
             Project: Spark
          Issue Type: Improvement
          Components: ML, Spark Core
    Affects Versions: 3.1.0
            Reporter: zhengruifeng


When implementing `RobustScaler`, I was looking for a way to guarantee that the {{QuantileSummaries in {{}}{{aggregateByKey}}{{}}}} are compressed before network communication.

Then I only found a tricky method to work around (however not applied), and there was no method for this.



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