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Posted to issues@spark.apache.org by "Kazuaki Ishizaki (JIRA)" <ji...@apache.org> on 2018/04/07 14:12:00 UTC

[jira] [Created] (SPARK-23893) Possible overflow in long = int * int

Kazuaki Ishizaki created SPARK-23893:
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             Summary: Possible overflow in long = int * int
                 Key: SPARK-23893
                 URL: https://issues.apache.org/jira/browse/SPARK-23893
             Project: Spark
          Issue Type: Bug
          Components: Spark Core, SQL
    Affects Versions: 2.3.0
            Reporter: Kazuaki Ishizaki


To perform `int * int` and then to cast to `long` may cause overflow if the MSB of the multiplication result is `1`. In other words, the result would be negative due to sign extension.



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