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Posted to issues@spark.apache.org by "Matt Cheah (JIRA)" <ji...@apache.org> on 2015/08/26 01:06:45 UTC

[jira] [Created] (SPARK-10250) Scala PairRDDFuncitons.groupByKey() should be fault-tolerant of single large groups

Matt Cheah created SPARK-10250:
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             Summary: Scala PairRDDFuncitons.groupByKey() should be fault-tolerant of single large groups
                 Key: SPARK-10250
                 URL: https://issues.apache.org/jira/browse/SPARK-10250
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.4.1
            Reporter: Matt Cheah
            Priority: Minor


PairRDDFunctions.groupByKey() is less robust that Python's equivalent, as PySpark's groupByKey can spill single large groups to disk. We should bring the Scala implementation up to parity.



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