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https://issues.apache.org/jira/browse/KAFKA-6050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16200030#comment-16200030
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huxihx commented on KAFKA-6050:
-------------------------------
Sorry for the misunderstanding although the exceptions do complain the invalid
topic names:)
> Cannot alter default topic config
> ---------------------------------
>
> Key: KAFKA-6050
> URL: https://issues.apache.org/jira/browse/KAFKA-6050
> Project: Kafka
> Issue Type: Bug
> Reporter: Tom Bentley
>
> The command to describe the default topic config
> {noformat}
> bin/kafka-configs.sh --zookeeper localhost:2181 \
> --describe --entity-type topics --entity-name '<default>'
> {noformat}
> returns without error, but the equivalent command to alter the default topic
> config:
> {noformat}
> bin/kafka-configs.sh --zookeeper localhost:2181 --alter \
> --entity-type topics --entity-name '<default>' --add-config
> retention.ms=1000
> {noformat}
> returns an error:
> {noformat}
> Error while executing config command Topic name "<default>" is illegal, it
> contains a character other than ASCII alphanumerics, '.', '_' and '-'
> org.apache.kafka.common.errors.InvalidTopicException: Topic name "<default>"
> is illegal, it contains a character other than ASCII alphanumerics, '.', '_'
> and '-'
> at org.apache.kafka.common.internals.Topic.validate(Topic.java:45)
> at kafka.admin.AdminUtils$.validateTopicConfig(AdminUtils.scala:578)
> at kafka.admin.AdminUtils$.changeTopicConfig(AdminUtils.scala:595)
> at kafka.admin.AdminUtilities$class.changeConfigs(AdminUtils.scala:52)
> at kafka.admin.AdminUtils$.changeConfigs(AdminUtils.scala:63)
> at kafka.admin.ConfigCommand$.alterConfig(ConfigCommand.scala:103)
> at kafka.admin.ConfigCommand$.main(ConfigCommand.scala:70)
> at kafka.admin.ConfigCommand.main(ConfigCommand.scala)
> {noformat}
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