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https://issues.apache.org/jira/browse/SPARK-26706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anton Okolnychyi updated SPARK-26706:
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Affects Version/s: 2.4.1
> Fix Cast$mayTruncate for bytes
> ------------------------------
>
> Key: SPARK-26706
> URL: https://issues.apache.org/jira/browse/SPARK-26706
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.3, 2.4.1, 3.0.0
> Reporter: Anton Okolnychyi
> Priority: Major
>
> The logic in {{Cast$mayTruncate}} is broken for bytes.
> Right now, {{mayTruncate(ByteType, LongType)}} returns {{false}} while
> {{mayTruncate(ShortType, LongType)}} returns {{true}}. Consequently,
> {{spark.range(1, 3).as[Byte]}} and {{spark.range(1, 3).as[Short]}} will
> behave differently.
> Potentially, this bug can lead to silently corrupting someone's data.
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