danny0405 commented on code in PR #14351:
URL: https://github.com/apache/hudi/pull/14351#discussion_r2563693181
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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/cdc/InternalRowToJsonStringConverter.scala:
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@@ -36,15 +37,63 @@ class InternalRowToJsonStringConverter(schema: StructType) {
}
def convert(record: InternalRow): UTF8String = {
- val map = scala.collection.mutable.Map.empty[String, Any]
+ // Use LinkedHashMap to preserve field order
+ val map = scala.collection.mutable.LinkedHashMap.empty[String, Any]
schema.zipWithIndex.foreach {
case (field, idx) =>
- if (field.dataType.isInstanceOf[StringType]) {
- map(field.name) =
Option(record.getUTF8String(idx)).map(_.toString).orNull
- } else {
- map(field.name) = record.get(idx, field.dataType)
- }
+ map(field.name) = convertField(record.get(idx, field.dataType),
field.dataType)
}
UTF8String.fromString(mapper.writeValueAsString(map))
}
+
+ private def convertField(value: Any, dataType: DataType): Any = {
+ if (value == null) {
+ null
+ } else {
+ dataType match {
+ case StringType => value.toString
Review Comment:
do we already have a test to cover the cdc generation of string fields?
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