wchevreuil commented on code in PR #169:
URL: https://github.com/apache/hbase-connectors/pull/169#discussion_r4314597016


##########
spark4/hbase-spark4/src/main/scala/org/apache/hadoop/hbase/spark/SchemaConverters.scala:
##########
@@ -411,6 +414,106 @@ object SchemaConverters {
         }
     }
   }
+
+  /**
+   * Constructs a converter function from Spark InternalRow types to Avro. 
Used by the DS V2 write
+   * path where the writer receives InternalRow instead of Row.
+   *
+   * This overload accepts the actual Avro Schema so that GenericRecord 
instances are built against
+   * the original schema rather than one reconstructed from the Spark 
StructType. The round-trip
+   * through convertStructToAvro loses nullable unions, FIXED types, and 
named-record identities,
+   * which causes GenericDatumWriter to reject the record when serializing 
against the original
+   * schema.
+   */
+  def createConverterToAvroFromInternalRow(
+      dataType: DataType,
+      avroSchema: Schema): (Any) => Any = {
+    val resolvedSchema = avroSchema.getType match {
+      case UNION =>
+        val nonNull = avroSchema.getTypes.asScala.filterNot(_.getType == NULL)
+        if (nonNull.size == 1) nonNull.head else avroSchema
+      case _ => avroSchema
+    }
+    dataType match {
+      case BinaryType =>
+        (item: Any) =>
+          item match {
+            case null => null
+            case bytes: Array[Byte] => ByteBuffer.wrap(bytes)

Review Comment:
   Addressed on last commit.



-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]

Reply via email to