SHOW TOPICS

Synopsis

SHOW | LIST [ALL] TOPICS [EXTENDED];

Description

SHOW TOPICS lists the available topics in the Kafka cluster that ksqlDB is configured to connect to (default setting for bootstrap.servers: localhost:9092). SHOW TOPICS EXTENDED also displays consumer groups and their active consumer counts.

SHOW TOPICS does not display hidden topics by default, such as: * KSQL internal topics, like the KSQL command topic or changelog & repartition topics, or topics that match any pattern in the ksql.hidden.topics configuration.

SHOW ALL TOPICS lists all topics, including hidden topics.

Example

ksql> SHOW TOPICS;

 Kafka Topic                                                                           | Partitions | Partition Replicas
--------------------------------------------------------------------------------------------------------
 default_ksql_processing_log                                                           | 1          | 1
 pageviews                                                                             | 1          | 1
 users                                                                                 | 1          | 1
--------------------------------------------------------------------------------------------------------
ksql> SHOW ALL TOPICS;

 Kafka Topic                                                                           | Partitions | Partition Replicas
--------------------------------------------------------------------------------------------------------
 _confluent-ksql-default__command_topic                                                | 1          | 1
 _confluent-ksql-default_query_CTAS_USERS_0-Aggregate-Aggregate-Materialize-changelog  | 1          | 1
 _confluent-ksql-default_query_CTAS_USERS_0-Aggregate-GroupBy-repartition              | 1          | 1
 default_ksql_processing_log                                                           | 1          | 1
 pageviews                                                                             | 1          | 1
 users                                                                                 | 1          | 1
--------------------------------------------------------------------------------------------------------

Last update: 2020-02-03