dual.commit.enabled — Kafka Consumer Configuration
If you are using “kafka” as offsets.storage, you can dual commit offsets to ZooKeeper (in addition to Kafka).
Description
If you are using “kafka” as offsets.storage, you can dual commit offsets to ZooKeeper (in addition to Kafka). This is required during migration from zookeeper-based offset storage to kafka-based offset storage. With respect to any given consumer group, it is safe to turn this off after all instances within that group have been migrated to the new version that commits offsets to the broker (instead of directly to ZooKeeper).
Default Values by Kafka Version
| Kafka Version | Default Value |
|---|---|
| 0.8.2 | true |
| 0.9.0 | true |
| 0.10.0 | true |
| 0.10.1 | true |
| 0.10.2 | true |
| 0.11.0 | true |
| 1.0 | true |
| 1.1 | true |
| 2.0 | true |
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