MaxGekk commented on a change in pull request #27456:
[SPARK-25040][SQL][FOLLOWUP] Add legacy config for allowing empty strings for
certain types in json parser
URL: https://github.com/apache/spark/pull/27456#discussion_r374851279
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonParser.scala
##########
@@ -317,8 +320,18 @@ class JacksonParser(
// SPARK-25040: Disallow empty strings for data types except for string
and binary types.
case VALUE_STRING if parser.getTextLength < 1 =>
- throw new RuntimeException(
- s"Failed to parse an empty string for data type
${dataType.catalogString}")
+ // Legacy mode for prior to Spark 3.0.0.
+ if (allowEmptyString) {
+ dataType match {
Review comment:
If you would match by types that allow empty strings, this could be shorter:
```scala
dataType match {
case IntergerType | ... if allowEmptyString => null
case _ => throw new RuntimeException(s"Failed to parse an empty string for
data type ${dataType.catalogString}")
}
```
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