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https://issues.apache.org/jira/browse/KAFKA-1481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14040652#comment-14040652
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Otis Gospodnetic commented on KAFKA-1481:
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Hi Jun, thanks for having a look.
bq. 1. While this may help some users, it may equally affect some other users
who now would need to change their parsing of the jmx names.
Won't they have to do that sooner or later anyway, because dashes as separators
obviously can't stay?
bq. 2. I am not sure how wide-spread the separator issue. If it only helps a
small number of users, I'd prefer that we only do that on the new consumer.
Nobody knows one way or the other though. So in absence of info I think it
makes sense to at least make a move in the right direction.
bq. Other than the separator issue, there are other things that are not ideal.
For example, the bean name is just unnecessarily too long. If we do want to
change the bean names, perhaps we should fix other problems together as well.
Long bean names may not be pretty, but they are not blockers. The dashes are
likely blockers for some portion of users and definitely blockers for any Kafka
monitoring tool makers. If long bean names are a problem (are they?) let's
open a separate issue, ha?
> 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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