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https://issues.apache.org/jira/browse/SPARK-18179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622367#comment-15622367
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Apache Spark commented on SPARK-18179:
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User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/15694
> Throws analysis exception with a proper message for unsupported argument
> types in reflect/java_method function
> --------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-18179
> URL: https://issues.apache.org/jira/browse/SPARK-18179
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Hyukjin Kwon
> Priority: Minor
>
> {code}
> scala> spark.range(1).selectExpr("reflect('java.lang.String', 'valueOf',
> cast('1990-01-01' as timestamp))")
> {code}
> throws an exception as below:
> {code}
> java.util.NoSuchElementException: key not found: TimestampType
> at scala.collection.MapLike$class.default(MapLike.scala:228)
> at scala.collection.AbstractMap.default(Map.scala:59)
> at scala.collection.MapLike$class.apply(MapLike.scala:141)
> at scala.collection.AbstractMap.apply(Map.scala:59)
> at
> org.apache.spark.sql.catalyst.expressions.CallMethodViaReflection$$anonfun$findMethod$1$$anonfun$apply$1.apply(CallMethodViaReflection.scala:159)
> at
> org.apache.spark.sql.catalyst.expressions.CallMethodViaReflection$$anonfun$findMethod$1$$anonfun$apply$1.apply(CallMethodViaReflection.scala:158)
> at
> scala.collection.IndexedSeqOptimized$class.prefixLengthImpl(IndexedSeqOptimized.scala:38)
> {code}
> We should throw analysis exception with a better message when the types are
> unsupported rather than {{java.util.NoSuchElementException: key not found:
> TimestampType}}.
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