application.id — Kafka Kafka Streams Configuration
An identifier for the stream processing application. Must be unique within the Kafka cluster.
Description
An identifier for the stream processing application. Must be unique within the Kafka cluster. It is used as 1) the default client-id prefix, 2) the group-id for membership management, 3) the changelog topic prefix.
Default Values by Kafka Version
| Kafka Version | Default Value |
|---|---|
| 0.10.0 | null |
| 0.10.1 | null |
| 0.10.2 | null |
| 0.11.0 | null |
| 1.0 | null |
| 1.1 | null |
| 2.0 | null |
| 2.1 | null |
| 2.2 | null |
| 2.3 | null |
| 2.4 | |
| 2.5 | |
| 2.6 | |
| 2.7 | |
| 2.8 | |
| 3.0 | |
| 3.1 | |
| 3.2 | |
| 3.3 | |
| 3.4 | |
| 3.5 | |
| 3.6 | |
| 3.7 | |
| 3.8 | |
| 3.9 | |
| 4.0 | |
| 4.1 | |
| 4.2 | |
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