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https://issues.apache.org/jira/browse/KAFKA-1481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14127899#comment-14127899
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Otis Gospodnetic commented on KAFKA-1481:
-----------------------------------------
Here is a Kafka user who said:
{quote}
I have topic name with “.” So, it is hard to distinguish metric name and topic
{quote}
c.f. http://search-hadoop.com/m/4TaT4IRD0t1
That's the sort of problem this patch solves.
> Stop using dashes AND underscores as separators in MBean names
> --------------------------------------------------------------
>
> Key: KAFKA-1481
> URL: https://issues.apache.org/jira/browse/KAFKA-1481
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.8.1.1
> Reporter: Otis Gospodnetic
> Labels: patch
> Fix For: 0.8.2
>
> Attachments: KAFKA-1481_2014-06-06_13-06-35.patch
>
>
> MBeans should not use dashes or underscores as separators because these
> characters are allowed in hostnames, topics, group and consumer IDs, etc.,
> and these are embedded in MBeans names making it impossible to parse out
> individual bits from MBeans.
> Perhaps a pipe character should be used to avoid the conflict.
> This looks like a major blocker because it means nobody can write Kafka 0.8.x
> monitoring tools unless they are doing it for themselves AND do not use
> dashes AND do not use underscores.
> See: http://search-hadoop.com/m/4TaT4lonIW
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