-
- $ bin/kafka-features.sh --bootstrap-controller localhost:9093 describe
-+
$ bin/kafka-features.sh --bootstrap-controller localhost:9093 describe
+ If the kraft.version field is level 0 or absent, you are using a static quorum. If
+ it is 1 or above, you are using a dynamic quorum. For example, here is an example of a static
+ quorum:
+
Feature: kraft.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 0 Epoch: 5
+Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.9-IV0 FinalizedVersionLevel: 3.9-IV0 Epoch: 5+ Here is another example of a static quorum:
+
Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.8-IV0 FinalizedVersionLevel: 3.8-IV0 Epoch: 5+ Here is an example of a dynamic quorum:
+
Feature: kraft.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 1 Epoch: 5
+Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.9-IV0 FinalizedVersionLevel: 3.9-IV0 Epoch: 5
+ The static versus dynamic nature of the quorum is determined at the time of formatting.
+ Specifically, the quorum will be formatted as dynamic if controller.quorum.voters is
+ not present, and if the software version is Apache Kafka 3.9 or newer. If you have
+ followed the instructions earlier in this document, you will get a dynamic quorum.
- If the kraft.version field is level 0 or absent, you are using a static quorum. If
- it is 1 or above, you are using a dynamic quorum. For example, here is an example of a static
- quorum:
-Feature: kraft.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 0 Epoch: 5
-Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.9-IV0 FinalizedVersionLevel: 3.9-IV0 Epoch: 5
-
-Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.8-IV0 FinalizedVersionLevel: 3.8-IV0 Epoch: 5
-
-Feature: kraft.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 1 Epoch: 5
-Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 3.9-IV0 FinalizedVersionLevel: 3.9-IV0 Epoch: 5
-controller.quorum.voters is
- not present, and if the software version is Apache Kafka 3.9 or newer. If you have
- followed the instructions earlier in this document, you will get a dynamic quorum.
-
- If you would like the formatting process to fail if a dynamic quorum cannot be achieved, format your
- controllers using the --feature kraft.version=1. (Note that you should not supply
- this flag when formatting brokers -- only when formatting controllers.)
- -
- $ bin/kafka-storage.sh format -t KAFKA_CLUSTER_ID --feature kraft.version=1 -c controller.properties
-
+ If you would like the formatting process to fail if a dynamic quorum cannot be achieved, format your
+ controllers using the --feature kraft.version=1. (Note that you should not supply
+ this flag when formatting brokers -- only when formatting controllers.)
+
$ bin/kafka-storage.sh format -t KAFKA_CLUSTER_ID --feature kraft.version=1 -c controller.propertiesNote: To migrate from static voter set to dynamic voter set, please refer to the Upgrade section.
$ bin/kafka-dump-log.sh --cluster-metadata-decoder --files metadata_log_dir/__cluster_metadata-0/00000000000000000000.logThis command decodes and prints the records in the a cluster metadata snapshot:
+This command decodes and prints the records in a cluster metadata snapshot:
$ bin/kafka-dump-log.sh --cluster-metadata-decoder --files metadata_log_dir/__cluster_metadata-0/00000000000000000100-0000000001.checkpointprocess.role should be set to either broker or controller but not both. Combined mode can be used in development environments, but it should be avoided in critical deployment environments.process.roles should be set to either broker or controller but not both. Combined mode can be used in development environments, but it should be avoided in critical deployment environments.N concurrent failures the controller cluster must include 2N + 1 controllers.