[STORM-1015] Store Kafka offsets with Kafka's consumer offset management api

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: storm-kafka
• Labels: consumer kafka offset pull-request-available
• Epic Link: Storm-Kafka Refactoring and Improvements
• Assignee: He Sun
• Reporter: Hang Sun
• Created: 28/Aug/15 05:13
• Updated: 22/Oct/18 19:26

Description

Current Kafka spout stores the offsets (and some other states) inside ZK with its proprietary format. This does not work well with other Kafka offset monitoring tools such as Burrow, KafkaOffsetMonitor etc. In addition, the performance does not scale well compared with offsets managed by Kafka's built-in offset management api. I have added a new option for Kafka to store the same data using Kafka's built-in offset management capability. The change is completely backward compatible with the current ZK storage option. The feature can be turned on by a single configuration option. Hope this will help people who wants to explore the option of using Kafka's built-in offset management api.

References:

https://cwiki.apache.org/confluence/display/KAFKA/Committing+and+fetching+consumer+offsets+in+Kafka
https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-OffsetCommit/FetchAPI

-thanks

Issue Links

• links to: GitHub Pull Request #705