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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2018/02/12 11:57:00 UTC
[jira] [Commented] (FLINK-7952) Add metrics for counting logging
events
[ https://issues.apache.org/jira/browse/FLINK-7952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360646#comment-16360646 ]
Chesnay Schepler commented on FLINK-7952:
-----------------------------------------
I question the value of having this counter as part of Flink.
As i understand it we wouldn't be able to plug these into the metric system (without reflection/static access), which severely limits the visibility.
Furthermore, why actually have this as part of the Flink project? This is perfect for a small self-contained project. There's nothing Flink-specific in there, in fact the only reason why you can't use the Hadoop EventCounter with Flink is that they have annotated it with their annotations.
> Add metrics for counting logging events
> ----------------------------------------
>
> Key: FLINK-7952
> URL: https://issues.apache.org/jira/browse/FLINK-7952
> Project: Flink
> Issue Type: Wish
> Components: Metrics
> Affects Versions: 1.4.0
> Reporter: Hai Zhou UTC+8
> Assignee: Hai Zhou UTC+8
> Priority: Critical
> Fix For: 1.5.0
>
>
> It would be useful to track logging events .
> *impl:*
> adds event counting via a custom Log4J Appender, this tracks the number of INFO, WARN, ERROR and FATAL logging events.
> *ref:*
> hadoop-common: [org.apache.hadoop.log.metrics. EventCounter |https://github.com/apache/hadoop/blob/f67237cbe7bc48a1b9088e990800b37529f1db2a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/log/metrics/EventCounter.java]
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