Status
Current state: Under Discussion
Discussion thread: here [Change the link from the KIP proposal email archive to your own email thread]
JIRA: here [Change the link from KAFKA-1 to your own ticket]
Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).
Motivation
Connect REST API provides an endpoint /connectors/<id>/config
for a connector's configuration. The endpoint allows to GET
a connector's configuration and to PUT
a new configuration. The only way to update an existing connector's configuration is to get, modify, and put it using this endpoint. This may cause two issues:
- Potential lost modifications due to non-atomicity of the update. The configuration can be changed between
GET
andPUT
in an unrelated way. These changes will be overwritten. - Inconvenience, especially when working in a command line using tools like cURL.
HTTP has PATCH method specifically designed for atomic partial updates. It can solve or mitigate the listed issues.
Public Interfaces
We will add PATCH
method to /connectors/<id>/config
endpoint in Connect REST API.
Proposed Changes
We will add PATCH
method definition into ConnectorsResource
, which will call the actual logic in Herder
and its child classes StandaloneHerder
and DistributedHerder
.
There is a draft pull request: https://github.com/apache/kafka/pull/6934
Compatibility, Deprecation, and Migration Plan
This change is backward compatible.
Rejected Alternatives
No rejected alternatives.