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https://issues.apache.org/jira/browse/KAFKA-6158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16235878#comment-16235878
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Vahid Hashemian commented on KAFKA-6158:
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Those columns are fixed length. So if the value length is at or above the
column length this would happen. I'll try to make it look better as part of the
work I'm doing for
[KAFKA-4682|https://issues.apache.org/jira/browse/KAFKA-5526].
> CONSUMER-ID and HOST values are concatenated if the CONSUMER-ID is > 50 chars
> -----------------------------------------------------------------------------
>
> Key: KAFKA-6158
> URL: https://issues.apache.org/jira/browse/KAFKA-6158
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 0.11.0.0
> Reporter: Gustav Westling
>
> Using the command:
> {noformat}
> ./kafka-consumer-groups.sh --bootstrap-server=localhost:9092 --describe
> --group foo-group
> {noformat}
> If the CONSUMER-ID is too long the delimiter between CONSUMER-ID and HOST
> disappears.
> Output:
> {noformat}
> TOPIC PARTITION CURRENT-OFFSET LOG-END-OFFSET LAG
> CONSUMER-ID HOST
> CLIENT-ID
> foobar-1 14 8948049 8948663 614
> default-6697bb36-bf03-46e4-8f3e-4ef987177834-StreamThread-1-consumer-7c0345f5-4806-4957-be26-eb4b3bd6a9dc/10.2.3.40
>
> default-6697bb36-bf03-46e4-8f3e-4ef987177834-StreamThread-1-consumer
> {noformat}
> Expected output:
> {noformat}
> TOPIC PARTITION CURRENT-OFFSET LOG-END-OFFSET LAG
> CONSUMER-ID HOST
> CLIENT-ID
> foobar-1 14 8948049 8948663 614
> default-6697bb36-bf03-46e4-8f3e-4ef987177834-StreamThread-1-consumer-7c0345f5-4806-4957-be26-eb4b3bd6a9dc
> /10.2.3.40
> default-6697bb36-bf03-46e4-8f3e-4ef987177834-StreamThread-1-consumer
> {noformat}
> I suspect that the formatting rules are incorrect
> https://github.com/apache/kafka/blob/0.11.0/core/src/main/scala/kafka/admin/ConsumerGroupCommand.scala#L137.
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