Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5263#discussion_r27744000
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTypes.scala ---
@@ -404,7 +405,16 @@ private[parquet] object ParquetTypesConverter extends
Logging {
}
}
+ def checkSpecialCharacters(schema: Seq[Attribute]) = {
+ // ,;{}()\n\t= and space character are special characters in Parquet
schema
+ if (schema.exists(_.name.matches(".*[ ,;{}()\n\t=].*"))) {
+ sys.error("""Attribute name can not contain any character among "
,;{}()\n\t=".
+ | Use Alias to rename attribute name""".stripMargin)
--- End diff --
Let's include the attribute name in the error message to make it more
clear, and reformat the code a bit:
```scala
private def checkSpecialCharacter(schema: Seq[Attribute]) = {
schema.map(_.name).foreach { name =>
if (name.matches(".*[ ,;{}()\n\t=].*")) {
sys.error(
s"""Attribute name "$name" contains invalid character(s) among "
,;{}()\n\t=".
|Please use alias to rename it.
""".stripMargin.split("\n").mkString)
}
}
}
```
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