Tejas Patil created KAFKA-1012:
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Summary: Implement an Offset Manager and hook offset requests to it
Key: KAFKA-1012
URL: https://issues.apache.org/jira/browse/KAFKA-1012
Project: Kafka
Issue Type: Sub-task
Components: consumer
Reporter: Tejas Patil
Assignee: Tejas Patil
Priority: Minor
After KAFKA-657, we have a protocol for consumers to commit and fetch offsets
from brokers. Currently, consumers are not using this API and directly talking
with Zookeeper.
This Jira will involve following:
1. Add a special topic in kafka for storing offsets
2. Add an OffsetManager interface which would handle storing, accessing,
loading and maintaining consumer offsets
3. Implement offset managers for both of these 2 choices : existing ZK based
storage or inbuilt storage for offsets.
4. Leader brokers would now maintain an additional hash table of offsets for
the group-topic-partitions that they lead
5. Consumers should now use the OffsetCommit and OffsetFetch API
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