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https://issues.apache.org/jira/browse/FLINK-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15289290#comment-15289290
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ASF GitHub Bot commented on FLINK-1502:
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Github user zentol commented on the pull request:
https://github.com/apache/flink/pull/1947#issuecomment-220087815
I've had an offline chat with @StephanEwen and as a result updated the PR.
List of changes:
* dropped Meters, Histograms and Timers
* we weren't convinced that the performance of the implementation used is
efficient enough for our use-cases
* removed Reservoir/Snapshot and various wrapper classes
* moved ScheduledDropWizardReporter into a new flink-metrics-dropwizard
module within flink-metrics
* removes Dropwizard usage entirely from flink-core
* the MetricRegistry no longer maintains maps of all metrics; reporters are
from now on responsible for doing this
* Listener interface was removed
* AbstractReporter class was added that implements this behaviour
* will make it easier to support multiple reporters in the future
* Counter and Gauge no longer implement the DropWizard interface
* added Counter-/GaugeWrapper classes for DropWizard reporters
> 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: Chesnay Schepler
> 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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