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https://issues.apache.org/jira/browse/SPARK-21320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16609300#comment-16609300
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Wenchen Fan commented on SPARK-21320:
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This is replaced by https://issues.apache.org/jira/browse/SPARK-23580
> Make sure all expressions support interpreted evaluation
> --------------------------------------------------------
>
> Key: SPARK-21320
> URL: https://issues.apache.org/jira/browse/SPARK-21320
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Wenchen Fan
> Priority: Major
>
> Most of time Spark SQL will evaluate expressions with codegen. However
> codegen is a complex technology, and we have already fixed a lot of bugs for
> it, and there will be more. To make Spark SQL more stable, we should have a
> fallback for evaluation when codegen fails, and this requires all expressions
> support interpreted evaluation. Currently the encoder related expressions are
> codegen only, we should fix them.
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