Eugene Kirpichov created BEAM-2221:
--------------------------------------
Summary: Make KafkaIO coder specification less awkward
Key: BEAM-2221
URL: https://issues.apache.org/jira/browse/BEAM-2221
Project: Beam
Issue Type: Improvement
Components: sdk-java-extensions
Reporter: Eugene Kirpichov
Assignee: Raghu Angadi
readWithCoders and writeWithCoders functions are awkward because they don't
emphasize enough that coders are a poor choice for interpreting wire format.
The only reason to specify coders in KafkaIO is when coder inference from
Deserializer fails. To emphasize that, let's change the API to be
withKeyDeserializer(Deserializer) as the default choice and
withKeyDeserializerAndCoder(Deserializer,Coder) if inference fails; likewise
for value.
Remove functions using coders to interpret wire format from the API. A common
case of that is Avro and Proto - for that, introduce special helper functions,
I guess like with{Avro,Proto}{Key,Value}(...), which under the hood may be
allowed to reuse Avro/ProtoCoder as a utility, but do not expose this fact.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
