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https://issues.apache.org/jira/browse/SPARK-13215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15135009#comment-15135009
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Apache Spark commented on SPARK-13215:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/11097
> Remove fallback in codegen
> --------------------------
>
> Key: SPARK-13215
> URL: https://issues.apache.org/jira/browse/SPARK-13215
> Project: Spark
> Issue Type: Improvement
> Reporter: Davies Liu
>
> in newMutableProjection, it will fallback to InterpretedMutableProjection if
> failed to compile.
> Since we remove the configuration for codegen, we are heavily reply on
> codegen (also TungstenAggregate require the generated MutableProjection to
> update UnsafeRow), should remove the fallback, which could make user
> confusing, see the discussion in SPARK-13116.
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