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https://issues.apache.org/jira/browse/SPARK-12580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yin Huai resolved SPARK-12580.
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Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 10524
[https://github.com/apache/spark/pull/10524]
> Remove string concatenations from usage and extended in @ExpressionDescription
> ------------------------------------------------------------------------------
>
> Key: SPARK-12580
> URL: https://issues.apache.org/jira/browse/SPARK-12580
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Kazuaki Ishizaki
> Assignee: Apache Spark
> Priority: Minor
> Fix For: 2.0.0
>
>
> More than one string concatenation in {{usage}} or {{extended}} for
> {{@ExpressinDescrption}} may cause compilation error.
> We remove a string concatenation in these fields based on the following
> policy describe at https://github.com/apache/spark/pull/10488
> Let's use multi-line string literals. If we have to have a line with more
> than 100 characters, let's use {{// scalastyle:off line.size.limit}} and {{//
> scalastyle:on line.size.limit}} to just bypass the line number requirement.
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