[
https://issues.apache.org/jira/browse/BEAM-7310?focusedWorklogId=376196&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-376196
]
ASF GitHub Bot logged work on BEAM-7310:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Jan/20 11:18
Start Date: 23/Jan/20 11:18
Worklog Time Spent: 10m
Work Description: aromanenko-dev commented on pull request #10563:
[BEAM-7310] Add support of Confluent Schema Registry for KafkaIO
URL: https://github.com/apache/beam/pull/10563#discussion_r370061135
##########
File path:
sdks/java/io/kafka/src/main/java/org/apache/beam/sdk/io/kafka/KafkaIO.java
##########
@@ -175,6 +175,30 @@
* <br>
* 3. Start from <em>latest</em> offset by default;
*
+ * <h3>Use Avro schema with Confluent Schema Registry</h3>
+ *
+ * <p>If the message keys or/and values in a topic were serialised by Avro
schema stored in
+ * Confluent Schema Registry, KafkaIO source can fetch this schema from
specified Schema Registry
+ * URL and use it for deserialization further. As an output, it will return a
{@link PCollection} of
+ * {@link KafkaRecord}s where key or/and value will be typed as {@link
+ * org.apache.avro.generic.GenericRecord}. In this case, users don't need to
specify key or/and
+ * value deserializers and coders since they will be set to {@link
KafkaAvroDeserializer} and {@link
+ * AvroCoder} by default accordingly.
+ *
+ * <p>For example, below topic values are serialized with Avro schema stored
in Schema Registry,
+ * keys are typed as {@link Long}:
+ *
+ * <pre>{@code
+ * PCollection<KafkaRecord<Long, GenericRecord>> input = pipeline
+ * .apply(KafkaIO.<Long, GenericRecord>read()
+ * .withBootstrapServers("broker_1:9092,broker_2:9092")
+ * .withTopic("my_topic")
+ * .withSchemaRegistry(""http://localhost:8081"";) // Confluent Schema
Registry URL
Review comment:
I'd leave this example as simple as possible. All configuration options for
CSR can be found in its documentation
----------------------------------------------------------------
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.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
Issue Time Tracking
-------------------
Worklog Id: (was: 376196)
Time Spent: 7h 50m (was: 7h 40m)
> Confluent Schema Registry support in KafkaIO
> --------------------------------------------
>
> Key: BEAM-7310
> URL: https://issues.apache.org/jira/browse/BEAM-7310
> Project: Beam
> Issue Type: Improvement
> Components: io-java-kafka
> Affects Versions: 2.12.0
> Reporter: Yohei Shimomae
> Assignee: Alexey Romanenko
> Priority: Minor
> Time Spent: 7h 50m
> Remaining Estimate: 0h
>
> Confluent Schema Registry is useful when we manage Avro Schema but KafkaIO
> does not support Confluent Schema Registry as discussed here.
> https://stackoverflow.com/questions/56035121/unable-to-connect-from-dataflow-job-to-schema-registry-when-schema-registry-requ
> https://lists.apache.org/thread.html/7695fccddebd08733b80ae1e43b79b636b63cd5fe583a2bdeecda6c4@%3Cuser.beam.apache.org%3E
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
