davidradl commented on code in PR #28115: URL: https://github.com/apache/flink/pull/28115#discussion_r3279920367
########## docs/content/docs/connectors/table/formats/avro-variant-confluent.md: ########## @@ -0,0 +1,271 @@ +--- +title: Confluent Avro Variant +weight: 5 +type: docs +--- +<!-- +Licensed to the Apache Software Foundation (ASF) under one +or more contributor license agreements. See the NOTICE file +distributed with this work for additional information +regarding copyright ownership. The ASF licenses this file +to you under the Apache License, Version 2.0 (the +"License"); you may not use this file except in compliance +with the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, +software distributed under the License is distributed on an +"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +KIND, either express or implied. See the License for the +specific language governing permissions and limitations +under the License. +--> + +# Confluent Avro Variant Format + +{{< label "Format: Deserialization Schema" >}} + +The Avro Variant Schema Registry (``avro-variant-confluent``) format allows you to read records that were serialized by the ``io.confluent.kafka.serializers.KafkaAvroSerializer`` and deserialize them into Flink's ``VARIANT`` type. + +Unlike the [Confluent Avro]({{< ref "docs/connectors/table/formats/avro-confluent" >}}) format which requires the table schema to match the Avro schema, this format reads the entire Avro record into a single ``VARIANT`` column. The writer schema is resolved dynamically per record from the configured Confluent Schema Registry based on the schema version id encoded in the record. The Avro schema does not need to be known at table creation time and can evolve across records. + +This format is deserialization-only and does not support writing. Review Comment: you could add because... Is this because we would know the schema in the write cases so would not want to use VARIANT? -- 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]
