[jira] [Commented] (FLINK-7122) When metric name contains special characters then Graphite will not display them

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-7122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16077794#comment-16077794 ] 

Chesnay Schepler commented on FLINK-7122:
-----------------------------------------

Do you know of a list of characters that graphite supports?

> When metric name contains special characters then Graphite will not display them
> --------------------------------------------------------------------------------
>
>                 Key: FLINK-7122
>                 URL: https://issues.apache.org/jira/browse/FLINK-7122
>             Project: Flink
>          Issue Type: Bug
>          Components: Metrics
>    Affects Versions: 1.3.1
>            Reporter: wyp
>            Priority: Minor
>
> When metric name contains special characters then Graphite will not display them, because Graphite(GraphiteUDP) only replace white space to {{-}}(See:[GraphiteUDP.java|https://github.com/dropwizard/metrics/blob/3.1-maintenance/metrics-graphite/src/main/java/com/codahale/metrics/graphite/GraphiteUDP.java#L109]). But Flink metric variable's associated value like this:
> {code}
> <job_id> -> 9e81f84c50820c304b8af2b16fa8140b
> <task_id> -> cbc357ccb763df2852fee8c4fc7d55f2
> <task_attempt_id> -> 690a6cebdd1bfa9edacfed50aa1d4807
> <host> -> localhost
> <operator_name> -> Sink: es
> <task_name> -> Source: Custom Source -> TestFlat -> Map -> Sink: es
> <task_attempt_num> -> 0
> <job_name> -> MyFlinkJobs
> <tm_id> -> 34d31d54c0031328a6ec8910e571a7f8
> <subtask_index> -> 0
> {code}
> then {{metrics.scope.task}}'s full name (Default value : {{<host>.taskmanager.<tm_id>.<job_name>.<task_name>.<subtask_index>}}) will be
> {{flinkjobs.localhost.taskmanager.34d31d54c0031328a6ec8910e571a7f8.MyFlinkJobs.Source: Custom Source -> TestFlat -> Map -> Sink: es.0}}, but this will not be display in Graphite, because Graphite didn't support {{:}},{{>}} etc. special characters.  we should probably be replacing these special characters.



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