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https://issues.apache.org/jira/browse/FLINK-4184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15375162#comment-15375162
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ASF GitHub Bot commented on FLINK-4184:
---------------------------------------
Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/2220
I rebased on the latest master and introduced a `CharacterFilter`
interface. The `CharacterFilter` allows to filter out invalid characters while
generating the fully qualified metric name.
In order to do this, the `AbstractMetricGroup#generateMetricName` takes a
`CharacterFilter` as argument. The `AbstractReporter` and the
`ScheduledDropwizardReporter` implement this interface to filter out reporter
specific characters.
> Ganglia and GraphiteReporter report metric names with invalid characters
> ------------------------------------------------------------------------
>
> Key: FLINK-4184
> URL: https://issues.apache.org/jira/browse/FLINK-4184
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Affects Versions: 1.1.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Fix For: 1.1.0
>
>
> Flink's {{GangliaReporter}} and {{GraphiteReporter}} report metrics with
> names which contain invalid characters. For example, quotes are not filtered
> out which can be problematic for Ganglia. Moreover, dots are not replaced
> which causes Graphite to think that an IP address is actually a scoped metric
> name.
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