YannByron commented on a change in pull request #4709:
URL: https://github.com/apache/hudi/pull/4709#discussion_r802538044
##########
File path:
hudi-client/hudi-spark-client/src/main/scala/org/apache/hudi/HoodieSparkUtils.scala
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@@ -293,4 +293,21 @@ object HoodieSparkUtils extends SparkAdapterSupport {
s"${tableSchema.fieldNames.mkString(",")}")
AttributeReference(columnName, field.get.dataType, field.get.nullable)()
}
+
+ def getRequiredSchema(tableAvroSchema: Schema, requiredColumns:
Array[String]): (Schema, StructType) = {
+ // First get the required avro-schema, then convert the avro-schema to
spark schema.
+ val name2Fields = tableAvroSchema.getFields.asScala.map(f => f.name() ->
f).toMap
+ val requiredFields = requiredColumns.map(c => name2Fields(c))
+ .map(f => new Schema.Field(f.name(), f.schema(), f.doc(),
f.defaultVal(), f.order())).toList
Review comment:
just move this function from `MergeOnReadSnapshotRelation`. maybe it's
not necessary.
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