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https://issues.apache.org/jira/browse/HBASE-24659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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niuyulin reassigned HBASE-24659:
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Assignee: niuyulin
> Calcuate FIXED_OVERHEAD automatically
> -------------------------------------
>
> Key: HBASE-24659
> URL: https://issues.apache.org/jira/browse/HBASE-24659
> Project: HBase
> Issue Type: Improvement
> Reporter: Duo Zhang
> Assignee: niuyulin
> Priority: Major
>
> Now the FIXED_OVERHEAD in some classes are maintained manually, an we have a
> method to TestHeapSizes to confirm that the value is correct.
> But it is really hard for developers to count the fields in a complicated
> class like HRegion. Since we have the ability to calcuate the accurate size
> in UT, I think we it is also possible to calcuate it when loading the class,
> which is a one time operation so should not effect the performance too much.
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