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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/10/14 22:46:43 UTC

[GitHub] [flink] zentol commented on a change in pull request #13640: [FLINK-19617] Added new metric for monitoring the JVM's Metaspace memory pool usage.

zentol commented on a change in pull request #13640:
URL: https://github.com/apache/flink/pull/13640#discussion_r505036909



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File path: docs/monitoring/metrics.md
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@@ -847,6 +847,8 @@ Thus, in order to infer the metric identifier:
 </table>
 
 ### Memory
+The memory-related metrics require Oracle's memory management (also included in OpenJDK's Hotspot implementation) to be in place. 
+Other JVM implementations (like IBM's J9) might lead to unexpected behavior.

Review comment:
       Why not just say that in these cases metrics may not be exposed?




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