LiShuMing commented on a change in pull request #25192: [SPARK-28436][SQL]
Throw better exception when datasource's schema i…
URL: https://github.com/apache/spark/pull/25192#discussion_r308070187
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
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@@ -339,7 +339,9 @@ case class DataSource(
val baseRelation =
dataSource.createRelation(sparkSession.sqlContext,
caseInsensitiveOptions)
if (baseRelation.schema != schema) {
- throw new AnalysisException(s"$className does not allow
user-specified schemas.")
+ throw new AnalysisException(s"$className does not allow
user-specified schemas, " +
+ s"user-specified schemas are not same as source schema: \n" +
Review comment:
OK, Thanks for @HyukjinKwon 's replies.
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