[jira] [Created] (KAFKA-10703) Document that default configs are not supported for TOPIC entities

["Colin McCabe (Jira)" <ji...@apache.org>]

Colin McCabe created KAFKA-10703:
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             Summary: Document that default configs are not supported for TOPIC entities
                 Key: KAFKA-10703
                 URL: https://issues.apache.org/jira/browse/KAFKA-10703
             Project: Kafka
          Issue Type: Improvement
            Reporter: Colin McCabe


We should better document that default configs are not supported for TOPIC entities.  Currently an attempt to set them gets confusing error messages.

Using admin client's incrementalAlterConfigs with {type=TOPIC, name=""} gives a cryptic error stack trace:

Exception in thread "main" java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.InvalidRequestException: Invalid config value for resource ConfigResource(type=TOPIC, name=''): Path must not end with / character
        at org.apache.kafka.common.internals.KafkaFutureImpl.wrapAndThrow(KafkaFutureImpl.java:45)
        at org.apache.kafka.common.internals.KafkaFutureImpl.access$000(KafkaFutureImpl.java:32)
        at org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(KafkaFutureImpl.java:89)
        at org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:260)
        at kafka.admin.ConfigCommand$.main(ConfigCommand.scala:91)
        at kafka.admin.ConfigCommand.main(ConfigCommand.scala)
Caused by: org.apache.kafka.common.errors.InvalidRequestException: Invalid config value for resource ConfigResource(type=TOPIC, name=''): Path must not end with / character

Similarly, kafka-configs.sh is not very clear about this issue.



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