This patch updates the `PartitionAssignor` server-side interface used in the new group coordinator for the new consumer group protocol as follow:
- It switches subscription from topic names to topic ids in order to be closer to the server side implementation.
- It switches assignment from Set to Map<Integer, Set> to be closer to the server side implementation.
- It adds getters for all attributes.
- It makes all attributes final private.
Reviewers: Jeff Kim <jeff.kim@confluent.io>, Alexandre Dupriez <alexandre.dupriez@gmail.com>, David Jacot <djacot@confluent.io>
This patch adds the `EventAccumulator` which will be used in the runtime of the new group coordinator. The aim of this accumulator is to basically have a queue per __consumer_group partitions and to ensure that events addressed to the same partitions are not processed concurrently. The accumulator is generic so we could reuse it in different context.
Reviewers: Alexandre Dupriez <alexandre.dupriez@gmail.com>, Justine Olshan <jolshan@confluent.io>
This patch adds Group, Record and Result.
Reviewers: Jason Gustafson <jason@confluent.io>, Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
The new group coordinator needs to access cluster metadata (e.g. topics, partitions, etc.) and it needs a mechanism to be notified when the metadata changes (e.g. to trigger a rebalance). In KRaft clusters, the easiest is to subscribe to metadata changes via the MetadataPublisher.
Reviewers: Justine Olshan <jolshan@confluent.io>
This patch adds ConsumerGroupHeartbeat to the GroupCoordinator interface and implements the API in KafkaApis.
Reviewers: Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
This patch adds the broker side `PartitionAssignor` interface as detailed in KIP-848. The interfaces differs a bit from the KIP in the following ways:
* The POJOs are not defined within the interface because the interface is to heavy like this.
* The interface is kept in the `group-coordinator` module for now. We don't want to have it out there until KIP-848 is ready to be released. We will move it to its final destination later.
Reviewers: Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>, Christo Lolov <lolovc@amazon.com>, Guozhang Wang <wangguoz@gmail.com>
This patch moves the current `__consumer_offsets` records from the `core` module to the new `group-coordinator` module.
Reviewers: Christo Lolov <lolovc@amazon.com>, Mickael Maison <mickael.maison@gmail.com>
This patch migrates all the internal APIs of the current group coordinator to the new `GroupCoordinator` interface. It also makes the current implementation package private to ensure that it is not used anymore.
Reviewers: Justine Olshan <jolshan@confluent.io>
This patch adds `OffsetDelete` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
This patch adds `TxnOffsetCommit` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
This patch adds `OffsetCommit` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Omnia G H Ibrahim <o.g.h.ibrahim@gmail.com>, Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
This patch adds OffsetFetch to the new GroupCoordinator interface and updates KafkaApis to use it.
Reviewers: Philip Nee <pnee@confluent.i>, Jeff Kim <jeff.kim@confluent.io>, Justine Olshan <jolshan@confluent.io>
This patch adds `deleteGroups` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Omnia G H Ibrahim <o.g.h.ibrahim@gmail.com>, Justine Olshan <jolshan@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `describeGroups` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `listGroups` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `leaveGroup` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jeff Kim <jeff.kim@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `syncGroup` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jeff Kim <jeff.kim@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `heartbeat` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jeff Kim <jeff.kim@confluent.io>, Jason Gustafson <jason@confluent.io>
This patch adds `joinGroup` to the new `GroupCoordinator` interface and updates `KafkaApis` to use it.
For the context, I will do the same for all the other interactions with the current group coordinator. In order to limit the changes, I have chosen to introduce the `GroupCoordinatorAdapter` that translates the new interface to the old one. It is basically a wrapper. This allows keeping the current group coordinator untouched for now and focus on the `KafkaApis` changes. Eventually, we can remove `GroupCoordinatorAdapter`.
Reviewers: Justine Olshan <jolshan@confluent.io>, Jeff Kim <jeff.kim@confluent.io>, Luke Chen <showuon@gmail.com>, Jason Gustafson <jason@confluent.io>
David Jacot
Ritika Reddy