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Posted to issues@spark.apache.org by "Tom van Bussel (Jira)" <ji...@apache.org> on 2020/09/16 09:20:00 UTC

[jira] [Created] (SPARK-32900) UnsafeExternalSorter.SpillableIterator cannot spill when there are NULLs in the input and radix sorting is used.

Tom van Bussel created SPARK-32900:
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             Summary: UnsafeExternalSorter.SpillableIterator cannot spill when there are NULLs in the input and radix sorting is used.
                 Key: SPARK-32900
                 URL: https://issues.apache.org/jira/browse/SPARK-32900
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 3.0.1, 2.4.7
            Reporter: Tom van Bussel


In order to determine whether {{UnsafeExternalSorter.SpillableIterator}} has spilled already it checks whether {{upstream}} is an instance of {{UnsafeInMemorySorter.SortedIterator}}. When radix sorting is used and there are NULLs in the input however, upstream will be an instance of {{UnsafeExternalSorter.ChainedIterator}} instead, but should still be spilled.



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