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https://issues.apache.org/jira/browse/SPARK-30893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17041618#comment-17041618
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Wenchen Fan edited comment on SPARK-30893 at 2/21/20 7:14 AM:
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For data type and nullability, I think we should fix before 3.0, as they can
lead to data corruption.
For other behaviors, we can have more discussion and wait for 3.1
was (Author: cloud_fan):
For data type and nullability, I think we should fix before 3.0, as they can
lead to data corruption.
For other behaviors, we should merge it to 3.1 with migration guide items.
> Expressions should not change its data type/behavior after it's created
> -----------------------------------------------------------------------
>
> Key: SPARK-30893
> URL: https://issues.apache.org/jira/browse/SPARK-30893
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Wenchen Fan
> Priority: Critical
>
> This is a problem because the configuration can change between different
> phases of planning, and this can silently break a query plan which can lead
> to crashes or data corruption.
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