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https://issues.apache.org/jira/browse/KAFKA-1481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14211341#comment-14211341
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Joel Koshy commented on KAFKA-1481:
-----------------------------------
Re: BrokerTopicMetrics so that it can be distinguished from
ConsumerTopicMetrics and ProducerTopicMetrics
Why do we need to distinguish it? i.e., BrokerTopicMetrics would only be on the
server right? Or are you concerned about the possibility of a producer or
consumer that happens to run in the same VM as a broker?
> 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
> Priority: Critical
> Labels: patch
> Fix For: 0.8.3
>
> Attachments: KAFKA-1481_2014-06-06_13-06-35.patch,
> KAFKA-1481_2014-10-13_18-23-35.patch, KAFKA-1481_2014-10-14_21-53-35.patch,
> KAFKA-1481_2014-10-15_10-23-35.patch, KAFKA-1481_2014-10-20_23-14-35.patch,
> KAFKA-1481_2014-10-21_09-14-35.patch, KAFKA-1481_2014-10-30_21-35-43.patch,
> KAFKA-1481_2014-10-31_14-35-43.patch,
> KAFKA-1481_2014-11-03_16-39-41_doc.patch,
> KAFKA-1481_2014-11-03_17-02-23.patch,
> KAFKA-1481_2014-11-10_20-39-41_doc.patch,
> KAFKA-1481_2014-11-10_21-02-23.patch,
> KAFKA-1481_IDEA_IDE_2014-10-14_21-53-35.patch,
> KAFKA-1481_IDEA_IDE_2014-10-15_10-23-35.patch,
> KAFKA-1481_IDEA_IDE_2014-10-20_20-14-35.patch,
> KAFKA-1481_IDEA_IDE_2014-10-20_23-14-35.patch, alternateLayout1.png,
> alternateLayout2.png, diff-for-alternate-layout1.patch,
> diff-for-alternate-layout2.patch, originalLayout.png
>
>
> 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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