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https://issues.apache.org/jira/browse/HBASE-28985?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junegunn Choi reassigned HBASE-28985:
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Assignee: Junegunn Choi
> Fix memStoreSize metric for a table and add heap and off-heap size metrics
> --------------------------------------------------------------------------
>
> Key: HBASE-28985
> URL: https://issues.apache.org/jira/browse/HBASE-28985
> Project: HBase
> Issue Type: Bug
> Components: metrics
> Reporter: Junegunn Choi
> Assignee: Junegunn Choi
> Priority: Minor
>
> The "memStoreSize" metric for a table is incorrect as it reports the sum of
> the data size, the heap size, and the off-heap size, while "memStoreSize"
> metric for a region or a region server is just the data size.
> https://github.com/apache/hbase/blob/e082405d8e7fa5c9b89e7af3153f022731168ecb/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsTableWrapperAggregateImpl.java#L79-L80
> We should fix it to report only the data size for consistency and add
> additional metrics, similarly to HBASE-27892, not to lose the extra
> information for understanding the flush behavior.
> * {{memStoreHeapSize}}
> * {{memStoreOffHeapSize}}
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