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https://issues.apache.org/jira/browse/FLINK-19617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17213839#comment-17213839
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Matthias edited comment on FLINK-19617 at 10/14/20, 11:36 AM:
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FYI: I used the wrong OpenJDK, i.e. IBM's {{J9}}. I wasn’t aware of the
difference and just went for the first {{sdkman}} offered. {{OpenJDK J9}}
offers some performance improvements which are also based on a different
[memory
management|https://developer.ibm.com/articles/garbage-collection-tradeoffs-and-tuning-with-openj9/].
That explains why there is no {{Metaspace}}.
{{sdkman}} also offers {{OpenJDK HotSpot}} which provides the expected memory
management including {{Metaspace}}.
was (Author: mapohl):
FYI: I used the wrong OpenJDK, i.e. {{J9}}. I wasn’t aware of the difference
and just went for the first {{sdkman}} offered. {{OpenJDK J9}} offers some
performance improvements which are also based on a different [memory
management|https://developer.ibm.com/articles/garbage-collection-tradeoffs-and-tuning-with-openj9/].
That explains why there is no {{Metaspace}}.
{{sdkman}} also offers {{OpenJDK HotSpot}} which provides the expected memory
management including {{Metaspace}}.
> Add Metaspace metric
> --------------------
>
> Key: FLINK-19617
> URL: https://issues.apache.org/jira/browse/FLINK-19617
> Project: Flink
> Issue Type: Sub-task
> Reporter: Matthias
> Priority: Major
>
> We want to expose the currently used Metaspace memory as well that should be
> provided through the metrics system.
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