dongjoon-hyun commented on code in PR #56775:
URL: https://github.com/apache/spark/pull/56775#discussion_r3483438211
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sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala:
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@@ -1144,6 +1144,11 @@ private[hive] object HiveClientImpl extends Logging {
CatalystSqlParser.parseDataType(typeStr)
} catch {
case e: ParseException =>
+ // Hive's union type (uniontype<...>) is not supported by Spark SQL
and makes the parser
+ // fail with a generic message. Detect it and report a clearer error
(SPARK-21529).
+ if (hc.getType.toLowerCase(Locale.ROOT).contains("uniontype<")) {
+ throw QueryExecutionErrors.unsupportedHiveTypeError(hc.getType,
hc.getName)
+ }
Review Comment:
Could you clarify what was the previous error message, @AgenticSpark ?
> Today the failure message comes from the parser path and does not clearly
identify that the Hive union type is unsupported.
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