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https://issues.apache.org/jira/browse/SPARK-14642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shixiong Zhu resolved SPARK-14642.
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Resolution: Fixed
Fix Version/s: 2.0.0
> import org.apache.spark.sql.expressions._ breaks udf under functions
> --------------------------------------------------------------------
>
> Key: SPARK-14642
> URL: https://issues.apache.org/jira/browse/SPARK-14642
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Yin Huai
> Priority: Blocker
> Fix For: 2.0.0
>
>
> The following code works
> {code}
> scala> import org.apache.spark.sql.functions._
> import org.apache.spark.sql.functions._
> scala> udf((v: String) => v.stripSuffix("-abc"))
> res0: org.apache.spark.sql.expressions.UserDefinedFunction =
> UserDefinedFunction(<function1>,StringType,Some(List(StringType)))
> {code}
> But, the following does not
> {code}
> scala> import org.apache.spark.sql.functions._
> import org.apache.spark.sql.functions._
> scala> import org.apache.spark.sql.expressions._
> import org.apache.spark.sql.expressions._
> scala> udf((v: String) => v.stripSuffix("-abc"))
> <console>:30: error: No TypeTag available for String
> udf((v: String) => v.stripSuffix("-abc"))
> {code}
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