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https://issues.apache.org/jira/browse/FLINK-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15156330#comment-15156330
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Dongwon Kim commented on FLINK-1502:
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[~jgrier] Thank you for sharing the link :-) The page said that ganglia already
stores counters when the slope type of a metric is set to Slope.POSITIVE, which
I wasn't aware of.
I found the following explanation about Slope.POSITIVE:
"Using the value positive for the slope of a new metric will cause the
corresponding RRD file to be generated as a COUNTER, with delta values being
displayed instead of the actual metric values."
You're right. We actually didn't need to do that.
I also don't have any idea regarding the query language.
If Ganglia supports it, we could store metrics as GAUGE and just change a way
to draw graphs.
> Expose metrics to graphite, ganglia and JMX.
> --------------------------------------------
>
> Key: FLINK-1502
> URL: https://issues.apache.org/jira/browse/FLINK-1502
> Project: Flink
> Issue Type: Sub-task
> Components: JobManager, TaskManager
> Affects Versions: 0.9
> Reporter: Robert Metzger
> Assignee: Dongwon Kim
> Priority: Minor
> Fix For: pre-apache
>
>
> The metrics library allows to expose collected metrics easily to other
> systems such as graphite, ganglia or Java's JVM (VisualVM).
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